# List of defunct airlines of the United States (D–I)

The following is a list of defunct airlines of the United States. However, some of these airlines have ceased operations completely, changed identities and/or FAA certificates and are still operating under a different name (e.g. America West Airlines changed to use the identity of US Airways in 2005 – which itself also changed identity to American Airlines in 2015).
For reasons of size, this article is broken into four parts:
* List of defunct airlines of the United States (A–C)
* List of defunct airlines of the United States (D–I)
* List of defunct airlines of the United States (J–P)
* List of defunct airlines of the United States (Q–Z)
* D
* E
* F
* G
* H
* I
* See also
* References
| Airline | State or territory | IATA | ICAO | Callsign | Hubs and focus cities | Commenced operations | Ceased operations | Notes |
| D ||||||||||
| Dailey Aviation | North Carolina | | | | Jacksonville | 2000 | 2000 | Charter operator |
| DAL Airlines | Texas | | | | Killeen–Fort Hood | 1966 | 1968 | Merged into Hood Airlines |
| Dallas Express Airlines | Texas | EX | DXP | DALLAS EXPRESS | Dallas Love Field | 1994 | 1995 | Operated Beech 1300 Commuter |
| Danbury Airways | Connecticut | | | | Danbury | 1980 | 1981 | |
| Dash Air | California | WI | IRV | | Santa Ana | 1981 | 1984 | Established as Air Irvine |
| Data Air Courier | Ohio | | | | Chicago Midway | 1996 | 1996 | Acquired by Airnet Express. Delivery of documents |
| Davis Air Lines | Georgia | | | | Atlanta | 1930 | 1930 | Operated Travel Air aircraft |
| DayJet | Florida | | DJS | DAYJET | Boca Raton | 2002 | 2008 | |
| Daylight Air | Ohio | | | | Willow Run | 1996 | 1998 | |
| Daytona Aviation | Florida | | | | Daytona Beach | 1962 | 1966 | Renamed Trans-Florida Airlines |
| DB Aviation | Illinois | | NSH | NORTH SHORE | Waukegan | 1987 | 2010 | Acquired by Landmark Aviation |
| DC Aircraft | Michigan | | | | Detroit | 1967 | 1967 | Commuter services |
| DeBoer Aviation | Kansas | | | | Wichita Eisenhower | 1973 | 1975 | Renamed to Ryan Aviation |
| Decatur Commuter Airlines | Illinois | | DAA | DECUR | Decatur | 1980 | 1981 | Acquired by Air Illinois |
| Del Airways | Georgia | | | | Adel | 1970 | 1971 | |
| Delta Air Service | Alaska | | | | Emmonak | 1971 | 1993 | Renamed to Grant Aviation |
| Delta Express | Georgia | DL | DAL | DELTA | Orlando | 1996 | 2003 | Replaced by Song; folded back into Delta Air Lines |
| Delta Private Jets | Kentucky | | DPJ | JET CARD | Cincinnati | 2001 | 2020 | Merged with Wheels Up. |
| Denver Ports of Call | Colorado | PC | POC | PAPA CHARLIE | Denver | 1967 | 1992 | Originally an air travel club. Rebranded as Skyworld Airlines |
| Des Moines Flying Service | Iowa | | | | Des Moines | 1960 | 1968 | |
| Desert Commuter Airlines | California | | | | Santa Monica | 1968 | 1970 | |
| Desert Sun Airlines | Arizona | | | | Phoenix Sky Harbor | 1995 | 1996 | Merged to America West Express |
| Destination Sun Airways | Florida | | | | Fort Lauderdale–Hollywood | 1992 | 1993 | |
| Detroit Northern Air Service | Michigan | | | | Alpena County | 1950 | 1975 | Known as Alpena Flying Service |
| Detroit – Grand Rapids Airline | Michigan | | | | Dearborn | 1926 | 1926 | Operated Stout 2-AT Pullman |
| Devoe Airlines | Georgia | | | | Miami | 1981 | 1983 | |
| DHL Airways, Inc. (1979–2004) | Florida | | | | | 1979 | 2004 | Renamed Astar Air Cargo |
| DHL Airways | Kentucky | ER | DHL | | | 1983 | 2003 | Rebranded as Astar Air Cargo |
| Diamond Aviation | | | SPK | SPARKLE | | 1984 | 1985 | |
| Direct Air | Illinois | UO | XAP | AIR DIRECT | Chicago Gary | 1980 | 1994 | Reorganized as Northern Star Airlines |
| Direct Air | South Carolina | | | | Myrtle Beach | 2006 | 2012 | |
| Direct Airlines | | | | | New York Kennedy | 1969 | 1969 | |
| Discover Air | Florida | | DCV | DISCOVER | Orlando Sanford | 1999 | 2003 | |
| Discovery Airlines | New Jersey | | | | Trenton–Mercer | 1996 | 2000 | Formed as Sky Trek International Air Lines |
| Discovery Airways | Hawaii | DH | DVA | DISCOVERY AIRWAYS | Honolulu | 1990 | 1990 | |
| Dixie Aircharter | Florida | | | | Miami | 1982 | 1983 | |
| Dixie Airlines | Utah | | | | St. George | 1969 | 1972 | Renamed to SkyWest Airlines |
| Dixie Flying Service | Virginia | | | | Charlottesville–Albemarle | 1930 | 1932 | Renamed to Ludington Air Lines |
| Dolphin Airways | Florida | DV | | FLAGSHIP | Tampa | 1981 | 1984 | Acquired by Provincetown-Boston Airline |
| Dolphin Express Airlines | Florida | 8U | IXX | ISLAND EXPRESS | Saint Croix | 1994 | 2000 | |
| Dorado Wings | Puerto Rico | | | | | 1964 | 1982 | To Crown Air |
| Doug Geeting Aviation | Alaska | | | | Talkeetna | 1990s | 2006 | Merged into K2 Aviation |
| Dovair | Delaware | | | | Delaware Airpark | 1976 | 1977 | Briefly operated as Baltimore Airways |
| Dovair Air Transport | Delaware | | | | Delaware Airpark | 1967 | 1969 | Air taxi flights |
| Dove One | Florida | | | | Fort Lauderdale–Hollywood | 1990 | 1999 | Air taxi operator |
| Downeast Airlines | Maine | | | | Knox County | 1960 | 2007 | Commuter airline |
| Downeast Express | Maine | E7 | DOW | DOWNEAST EXPRESS | Portland | 1995 | 1997 | Renamed Northeast Airlines |
| Downtown Airlines | New York | | | | New York Skyports Seaplane Base | 1972 | 1975 | Hourly service operated with float-equipped Piper Aztec |
| Drummond Island Air | Michigan | | DRE | MICHIGAN | Drummond Island | 1989 | 1991 | Established as Michigan Airways |
| Dynamic International Airways | Pennsylvania | 2D | DYA | DYNAMIC AIR | Wayne | 2015 | 2018 | Established as Dynamic Airways |
| E ||||||||||
| Eagle Air International | Nevada | V9 | VIK | | Las Vegas McCarran | 1969 | 1993 | Rebranded as Eagle Airlines |
| Eagle Airline | Alabama | | | | Auburn | 1985 | 1986 | Operated Piper Navajo |
| Eagle Airlines | Kansas | | | | Kansas City Wheeler | 1930 | 1930 | Scheduled passenger service |
| Eagle Airlines | Nevada | V9 | VIK | | Las Vegas McCarran | 1993 | 1997 | Began as Eagle Air International |
| Eagle Canyon Airlines | Nevada | FE | TLO | TALON | Las Vegas McCarran | 1969 | 1998 | Merged into Scenic Airlines |
| Eagle Commuter Airlines | Texas | | ECA | EAGLEAIR | Brownwood | 1976 | 1986 | |
| Eagle Jet Charter | Nevada | | | | Las Vegas McCarran | 1996 | 1998 | Grand Canyon tours |
| Eagle Wings | | | | | | | | |
| East Coast Commuter | Massachusetts | | | | Boston | 1963 | 1970 | |
| East Hampton Aire | New York | IN | EHA | AIR HAMPTON | East Hampton | 1978 | 1991 | Operated subservices for Pilgrim Airlines |
| East Texas Airlines | Texas | | | | Longview | 1950s | | |
| Eastern Air Lines | New York Florida | EA | EAL | EASTERN | Miami | 1926 | 1991 | Established as Pitcairn Aviation |
| Eastern Air Lines (2015) | Florida | | | | Miami | 2015 | 2017 | Operated Boeing 737 |
| Eastern Air Lines Shuttle | Virginia | | | | New York-LaGuardia | 1961 | 1989 | To Trump Shuttle |
| Eastern Metro Express | Georgia | | EME | EMAIR | Atlanta | 1984 | 1991 | |
| Eastman Airways | New York | | | | Albany | 1983 | 1984 | Renamed to Air Marc |
| Eastwind Airlines | New Jersey | W9 | SGR | STINGER | Trenton, New Jersey | 1995 | 1999 | |
| Economy Airways | | | | | | | 1956 | Irregular air carrier grounded by CAB for financial weakness |
| Ed's Aircraft Service | Oklahoma | | | | | 1972 | 1973 | |
| Edde Airlines | Utah | | | | Salt Lake City | 1960 | 1965 | |
| Ede-Aire | Michigan | DV | | | Detroit Lakes | 1978 | 1981 | Acquired by Mesaba Airlines |
| El Paso Transport | Texas | | | | Big Spring McMahon | 1975 | 1975 | Renamed to Trans Regional Airlines |
| Elan Air | Massachusetts | | | | Boston | 1980 | 1982 | |
| Elite Airways | Maine | 7Q | MNU | MAINER | Portland, MaineVero Beach, Florida | 2014 | 2022 | |
| Ellis Airlines | Alaska | | | | Ketchikan | 1936 | 1962 | To Alaska Coastal Airlines |
| Emerald Air | Texas | OD | EFF | EMERALD | Austin Bergstrom | 1978 | 1991 | Established as Emerald Valley Airlines. To Braniff International Airlines, Inc. |
| Emery Worldwide | Ohio | EB | EWW | EMERY | Dayton | 1946 | 2001 | |
| Empire Air Lines | Idaho | | | | Spokane | 1946 | 1952 | Purchased by West Coast Airlines |
| Empire Airlines | New York | | UR | | Oneida County | 1976 | 1986 | To Piedmont Airlines |
| Empire Airways | New York | | JKR | JOKER | Farmingdale | 2004 | 2012 | |
| Empire State Airlines | New York | | | | Syracuse | 1964 | 1966 | Third level carrier |
| Encompass Aviation | California | LC | ROM | | Hawthorne Jack Northrop | 2017 | 2019 | Passenger charter carrier |
| Enterprise Airlines | Ohio | | JSP | JETSPEED | Cincinnati/Northern Kentucky | 1988 | 1990 | Regional carrier connections to the Concorde |
| Eos Airlines | New York | E0 | ESS | NEW DAWN | New York Kennedy | 2004 | 2009 | |
| Era Aviation | Alaska | 7H | ERH | ERAH | Anchorage | 1948 | 2009 | Formed as Economy Helicopters, acquired by Frontier Alaska, renamed to Era Alaska now Ravn Alaska |
| Essair | Texas | | | | Houston-Hobby | 1939 | 1946 | Renamed to Pioneer Air Lines. Legal name of the carrier was Essair, Inc. |
| Eugene Aviation Services | Oregon | | | | Eugene | 1956 | 1969 | Operated on behalf of West Coast Airlines |
| Eureka Aero | California | | | | Samoa Field | 1970 | 1979 | Renamed Air Pacific (United States) |
| Evergreen International Airlines | Oregon | EZ | EIA | EVERGREEN | New York Kennedy | 1975 | 2013 | See also Evergreen International Aviation |
| Evergreen International Aviation | Oregon | | | | | 1960 | 2014 | Formed as Evergreen Helicopters, see also Evergreen International Airlines and Intermountain Aviation |
| Exec Air | New York | | | | Sullivan County | 1996 | 1999 | Renamed to Exec Air of Naples |
| Exec Express | Texas | | | | Dallas/Fort Worth | 1984 | 1998 | See Lone Star Airlines |
| Excellaire | Colorado | BH | AUS | | Stapleton | 1974 | 1985 | Edtablished as US Aviation. Changed to AIR US in 1977. Became Execellaire in 1984. |
| Execuair | Washington | | | | Seattle-Tacoma | 1971 | 1977 | Renamed to Columbia Pacific Airlines |
| Executive Air Transport | Michigan | | | | Muskegon | 1995 | 1995 | Executive charter and cargo carrier |
| Executive Airlines | Florida | | | | | 1964 | 1971 | |
| Executive Airlines | Massachusetts | EX | | | Boston | 1967 | 1973 | Established as National Executive Flight Service |
| Executive Airlines | Massachusetts | | | | Hanscom Field | 1976 | 1977 | Established as Air Speed |
| Executive Airlines | Puerto Rico | OW | EGF | EAGLE FLIGHT | San Juan | 1986 | 2013 | Began as Executive Air Charter |
| Executive Airlines | New York | YL | ORA | | Farmingdale | 1991 | 2003 | Began as Long Island Airlines |
| Executive Airshare | Missouri | | XSR | | Kansas City Wheeler | 1974 | 2018 | Rebranded Airshare |
| Executive Charter Service | Alaska | | | | Bethel | 1983 | 1985 | Acquired by Unalakleet Air Taxi |
| Executive Flight Services | Oregon | | | | Portland | 1961 | 1977 | Renamed to Air Oregon |
| Executive Jet Aviation | Ohio | | | | Columbus Glenn | 1977 | 1978 | Merged with Newport Aero to form EJA/Newport |
| Executive Jet Aviation | New Jersey | EJ | EJA | EXECJET | Teterboro | 1965 | 2007 | Established as Executive Jet Airways |
| Executive Yankee Airlines | Massachusetts | | | | Pittsfield | 1968 | 1969 | Established as Yankee Airlines |
| Express Air | Arizona | | AAE | ARIZONA | Phoenix Sky Harbor | 1997 | 2001 | |
| Express Airlines I | Tennessee | 9E | FLG | FLAGSHIP | Memphis | 1995 | 2002 | Renamed to Pinnacle Airlines |
| ExpressJet | Georgia | EV | ASQ | ACEY | | 1986 | 2022 | Commenced flights in 1987. Ceased flights in 2020 and briefly relaunched as aha! before liquidating in 2022. |
| Express One International | Texas | EO | LHN | LONGHORN | Dallas/Fort Worth | 1995 | 2002 | Renamed to Pinnacle Airlines then Endeavor Air |
| Express.Net Airlines | Florida | | XNA | EXPRESSNET | Naples | 1972 | 2008 | Formed as Transcontinental Airlines |
| F ||||||||||
| Fairbanks Air | Alaska | | | | Fairbanks | 1965 | 1975 | Renamed Great Northern Airlines |
| Fairbanks Air Service | Alaska | | | | Fairbanks | 1955 | 1976 | Pax and cargo charters within Alaska |
| Fairbanks Airplane Company | Alaska | | | | Fairbanks | 1925 | 1926 | Operated Fokker F.III. Absorbed into Wien Alaska Airways |
| Fairways Corp. | Virginia | | FWY | | Washington National | 1969 | 1989 | Intrastate carrier |
| Falcon Air Express | Florida | F2 | FAO | PANTHER | Miani | 1995 | 2015 | |
| Falcon Airways | Texas | | | | Addison | 1971 | 1979 | Operated Carvair |
| Family Airlines | Nevada | | | | Las Vegas McCarran | 1992 | 1992 | Never started operations |
| FAR Airlines | New York | | | | New York Kennedy | 1968 | 1968 | |
| Farthest North Airplane Company | Alaska | | | | Fairbanks | 1923 | 1924 | Ben Eielson first flight on a Curtiss Jenny JN-4D took place on 3 July 1923 |
| Far West Airlines | California | | FRW | | Fresno Yosemite | 1984 | 1984 | Operated two leased NAMC YS-11 |
| Farwest Airlines | Arizona | | | | Phoenix Sky Harbor | 1999 | 2004 | Operated DHC Dash 7 |
| Federated Airlines | New York | | | | New York-LaGuardia | 1948 | 1952 | Irregular air carrier. |
| Ferguson Airways | Alaska | | | | Anchorage | 1949 | 1949 | Acquired by Wien Alaska Airlines |
| Ferns Flying Service | New Hampshire | | | | Concord | 1969 | 1969 | Daily commuter service between Concord and Boston |
| Fiesta Airline | | | FIE | FIESTA | | 1971 | 1973 | |
| Fina Air | Puerto Rico | | | | San Juan | 2003 | | |
| Finair Express | Florida | | FNX | FINEX | Miami | 1982 | 1984 | Subcontract carrier for Air Florida Commuter then renamed to Southern Express |
| Financial Air Express | Michigan | | | | Pontiac | 1974 | 1974 | Founded by Gerald Mercer |
| Fine Air | Florida | FB | FBF | FINE AIR | Miami | 1989 | 2002 | To Arrow Air |
| First Air | California | | | | Los Angeles | 1982 | 1983 | Renamed to Regentair. All-first class service |
| Fischer Brothers Aviation | Ohio | GP | GCS | GALION | Galion | 1989 | 2001 | Established as Galion Commuter Service. Became an Allegheny Commuter. Acquired by Midway Airlines and renamed to Midway Commuter |
| Five Star Airlines | Massachusetts | | FIV | FIVE STAR | | 1985 | 1989 | Operated L-1011 TriStar |
| Flagship Airlines | Tennessee | | | | Nashville | 1991 | 1998 | Formed by the merger of Command Airways into Nashville Eagle, merged with Simmons Airlines and Wings West Airlines to form American Eagle Airlines |
| Flagship Express Services | Massachusetts | | FSX | FLAG | | 1991 | 1991 | Established as Rosenbalm Aviation |
| Fleet Airways | Minnesota | | | | Duluth | 1967 | 1968 | Renamed to Fleet Airlines |
| Fleetway Airlines | Texas | | | | Austin Mueller | 1967 | 1969 | |
| Fleming International Airways | | | | | | 1973 | 1983 | All-cargo carrier. Renamed to Cam Air International |
| Flight Alaska | Alaska | 4Y | UYA | | Bethel | 2000 | 2004 | Established as Yute Air Alaska. Renamed to Yute Air |
| Flight Express | | | EXR | FLIGHT EXPRESS | | 1985 | 2013 | Established as Chapman Air |
| Flight International Airlines | Georgia | | FIV | FLIGHT INTERNATIONAL | Atlanta | 1984 | 1987 | |
| Flight Line | Missouri | | FLN | FAST LINE | Cape Girardeau | 1985 | 1986 | Renamed to Southern Airways |
| Flight Operations | Ohio | | FOI | | Cleveland Hopkins | 1979 | 1979 | Charter carrier. Acquired by Crow Executive Air |
| Flight Options | New York | | OPT | OPTIONS | Greater Binghamton | 1999 | 1999 | |
| Flight Service | New York | | | | Syracuse | 1953 | 1964 | Third level carrier |
| Flightways Aviation System | Pennsylvania | | | | Philadelphia | 1974 | 1975 | Commuter services |
| Florence Airlines | South Carolina | | | | Florence | 1974 | 1975 | Established as Air Taxi |
| Florida Air Lines | Florida | | | | Sarasota-Bradenton | 1969 | 1981 | Established as Florida Air Taxi. Became Southern International Airways. Operated DC-3, Cessna 402 |
| Florida Air Taxi | Florida | | | | Tampa | 1964 | 1968 | Renamed to Florida Airlines |
| Florida Aircraft Leasing | Florida | | | | | | | |
| Florida Airlines | Florida | FE | | | Tampa | 1960 | 1981 | |
| Florida Airmotive | Florida | | | | Lantana | 1940 | 1940 | Charter carrier |
| Florida Airways | Florida | | | | Miami | 1923 | 1927 | |
| Florida Airways | Florida | | | | Orlando | 1947 | 1949 | local service airline, originally Orlando Airlines |
| Florida Atlantic Airlines | Florida | | | | Fort Lauderdale | 1968 | 1970 | |
| Florida Coastal Airlines | Florida | PA | FCL | FLORIDA COASTAL | Fort Lauderdale-Hollywood | 1995 | 2010 | |
| Florida Commuter Airlines | Florida | | FCA | | Palm Beach | 1980 | 1981 | To Southern Airways |
| Florida Express | Florida | ZO | FLX | FLEXAIR | Orlando | 1983 | 1988 | Merged into Braniff (1983–1990) |
| Florida West Airlines | Florida | HG | FWL | FLO WEST | Miami | 1989 | 1995 | Acquired by Florida West International Airways |
| Florida West International Airways | Florida | RF | FWL | FLO WEST | Miami | 1981 | 2017 | |
| FloridaGulf Airlines | Florida | | | | Tampa | 1991 | 1997 | Merged into Air Midwest |
| Fly First Class | | F3 | SGB | SONGBIRD | | 2008 | 2008 | |
| Fly Guam | Guam | | | | Guam | 2008 | 2012 | |
| FlyHawaii Airlines | Hawaii | | | | Honolulu | 2005 | 2005 | Never started operations |
| Flying Fox Services | | | | | | 1929 | 1929 | Acquired by Delta Air Service |
| Flying Tiger Air Services | | | | | Tokyo Narita | 1966 | 1967 | Branch of Flying Tiger Lines. Contract to Military Airlift Command |
| Flying Tiger Line | California | FT | FTL | TIGER | Los Angeles | 1945 | 1989 | Merged into FedEx Express |
| Flying W Airways | Florida | | | | Anchorage | 1967 | 1972 | Subsidiary of Red Dodge Aviation |
| Focus Air Cargo | Florida | F2 | FKS | FOCUS | Fort Lauderdale | 2004 | 2008 | |
| Folsom's Air Service | Maine | | | | Greenville | 1989 | 2006 | Charter carrier |
| Fontana Aviation | Michigan | | | | Iron Mountain | 1967 | 1977 | Third-level services |
| Ford Air Transport Service | Illinois | | | | Detroit | 1925 | 1932 | Merged with Stout Air Service |
| Forde-Aire | | | SQH | SUSQUEHANNA | | 1978 | 1979 | Renamed to Susquehanna Airways |
| Fort Collins Flying Service | Colorado | | | | Denver | 1980 | 1981 | Established as Valley Airpark. Acquired by Air Link Corporation |
| Fort Vancouver Airlines | Washington | | | | Vancouver | 1979 | 1981 | Commuter carrier. PATCO strike caused the closing. |
| Fort Wayne Air Service | Indiana | | | | Fort Wayne | 1963 | 1967 | Scheduled air taxi services to Detroit |
| Fort Worth Airlines | Texas | | FTW | FORT WORTH AIR | Fort Worth Meacham | 1984 | 1985 | Went bankrupt |
| Foster Aviation | Alaska | | FSA | FOSTER-AIR | Nome | 1973 | 1984 | Was an FBO operator by Neal Foster |
| Four Star Air Cargo | Puerto Rico | HK | FSC | FOUR STAR | San Juan | 1982 | 2009 | Started in the United States Virgin Islands |
| Fox Cities Airlines | Wisconsin | | | | | 1963 | 1965 | Operated de Havilland Dove. Merged into Air Wisconsin |
| Frank Martz Coach Co. | New York | | | | Buffalo Niagara | 1929 | 1930 | Renamed to Martz Air Lines |
| Freedom Airlines | Ohio | DN | | LIBERTY | Cleveland Hopkins | 1980 | 1984 | Subsidiary of Red Dodge Aviation |
| Freedom Airlines | Texas | F8 | FRL | FREEDOM AIR | Cincinnati/Northern Kentucky | 2002 | 2010 | Shut down by parent company |
| Freelandia | | | | | Newark Liberty | 1973 | 1974 | |
| Friedkin Airlines | California | | | | San Diego | 1948 | 1948 | |
| Friendship Air Alaska | Alaska | 4H | FAL | FRIENDSHIP | Fairbanks | 1986 | 1989 | Established as Harold's Air Service. Resumed as Tanana Air Service in 1992 |
| Fromhagen Aviation | Florida | | | | St. Pete-Clearwater | 1969 | 1998 | |
| Frontier Airlines | Colorado | FL | FTA | FRONTIER | Denver | 1950 | 1986 | Went bankrupt; some operations absorbed by Continental Airlines |
| Frontier Alaska | Alaska | | | | Anchorage | 2008 | 2014 | |
| Frontier Express | Wisconsin | | | | Milwaukee Mitchell | 2011 | 2013 | Operated by Chautauqua Airlines |
| Frontier Flying Service | Alaska | | | | Fairbanks | 1950 | 2014 | |
| Frontier Horizon Airlines | Colorado | FL | FLH | MILE HIGH | Denver Stapleton | 1983 | 1986 | |
| Funair | Florida | | | | Miami | 1996 | 2001 | Operated for Carnival Cruise Lines |
| Funworld International Airways | Florida | | | | Miami | 1993 | 1994 | Operated Boeing 727-200 |
| Futura Air Lines | California | | | | Oakland | 1962 | 1962 | |
| G ||||||||||
| Galaxy Airlines | Tennessee | | | | Cleveland Hopkins | 1968 | 1969 | Commuter services. Operated Douglas DC-3 |
| Galaxy Airlines | Florida | 9G | GAL | GALAXY | Fort Lauderdale | 1978 | 1987 | |
| Galena Air Service | Alaska | | GAS | GALENA AIR SERVICE | Galena | 1986 | 1989 | Acquired by Hermen’s Air |
| Gateway Aviation | Wisconsin | | | | La Crosse | 1968 | 1969 | Renamed to Mississippi Valley Airways |
| Gem State Airlines | Idaho | GS | | | Coeur d'Alene | 1978 | 1980 | Merged with Air Pacific (United States) to become Golden Gate Airlines |
| Gemini Air Cargo | Minnesota | GR | GCO | GEMINI | Miami | 1995 | 2008 | |
| General Air Lines | | | | | San Diego | 1934 | 1934 | Renamed to Western Air Express |
| General Airlines | Pennsylvania | | GNL | GENERAL | | 1978 | 1979 | Established as General Aviation Service |
| Geo Air | Florida | | | | | 1995 | 2008 | |
| Georgia Air | Georgia | | | | Atlanta | 1970 | 1972 | |
| Georgia Air Freight | Georgia | GS | | | Atlanta | 1978 | 1979 | |
| Georgia Skies | Georgia | LI | NMI | TSUNAMI | Atlanta | 2008 | 2013 | A Pacific Wings subsidiary |
| GID Air Services | Texas | | | | Fort Worth Meacham | 1982 | 1986 | Operated CV-580 |
| Gillam Airways | Alaska | | | | Valdez | 1932 | 1932 | |
| Gilley Airways | New York | | | | Glens Falls | 1961 | 1979 | All-cargo commuter |
| Gilpin Air Lines | California | | | | Los Angeles | 1931 | 1934 | Renamed to C&G Air Lines |
| GLO Airlines | Louisiana | | | | New Orleans | 2015 | 2017 | |
| Global International Airways | Missouri | GX | GAX | GLOBAL | Kansas City | 1981 | 1984 | |
| Globe Air | Arizona | | | | New Orleans | 1981 | 1985 | Operating name of Aircraft Specialities of Mesa Airlines |
| Globe Freight Airline | | | | | | 1945 | 1948 | |
| go! | Hawaii | YV | ASH | AIR SHUTTLE | Honolulu | 2006 | 2014 | |
| Go! Mokulele | Hawaii | | | | Honolulu | 2009 | 2012 | |
| Go Transportation | | | | | | 1971 | 1977 | Established as Ron Clark Enterprises. Renamed to Go Air |
| Gold Coast Air | California | | GMR | EXPEDITOR | Los Angeles | 1981 | 1982 | |
| Gold Coast Air Taxi | Florida | | | | Miami | 1966 | 1967 | Renamed to Gold Coast Airways |
| Gold Coast Airways | Florida | | | | Miami | 1967 | 1969 | Acquired by Executive Airlines |
| Golden Airlines | | | GDD | GOLDEN AIRLINES | | 1999 | 1999 | |
| Golden Airways | | | | | | 1980 | 1983 | Established as Ancar Aviation |
| Golden Carriage Air | | | | | | 1979 | 1980 | |
| Golden Eagle Airlines | | | GEL | GOLDEN EAGLE | | 1978 | 1979 | Absorbed by WestAir Airlines |
| Golden Gate Airlines | California | GG | | | Monterey | 1980 | 1981 | Merged with Swift Aire Lines |
| Golden Gate Airways | California | | | | San Francisco | 1960 | 1962 | |
| Golden Isles Airlines | Georgia | | | | McKinnon St. Simons Island | 1960 | 1960 | Operated de Havilland Dove |
| Golden North Airways | Alaska | | | | | 1947 | 1949 | Operated C-46 |
| Golden Nugget Aviation | | | | | | 1982 | 2001 | |
| Golden Pacific Airlines | California | | | | San Francisco | 1969 | 1973 | |
| Golden Pacific Airlines | Arizona | YB | GPA | GOLD PAC | Kingman | 1981 | 1989 | |
| Golden South Airlines | Florida | | | | Fort Pierce | 1979 | 1979 | |
| Golden State Airlines | California | | | | Burbank | 1951 | 1952 | California intrastate airline | Golden State Airlines | California | 1955 | 1987 |
| Golden State Airlines | Arizona | | GSC | GOLDEN STATE | Santa Ana | 1979 | 1985 | |
| Golden Valley Aero | | | | | | 1982 | 1982 | |
| Golden West Airlines | California | GW | GWA | GOLDEN WEST | Long Beach | 1967 | 1983 | |
| Golden West Airlines | California | | | | Van Nuys | 1968 | 1969 | |
| Gopher Airlines | | | | | | 1968 | 1968 | |
| Gopher Aviation | | | | | | 1959 | 1959 | |
| Gordon Air | | | | | | 1984 | 2000 | Founded by John Gordon. Renamed to Ultimate Jetcharters |
| Gorst Air Transport | Washington | | | | Seattle Lake Union Seaplane Base | 1929 | 1935 | Founded by Vern C. Gorst |
| GP Express Airlines | Nebraska | | GPE | REGIONAL EXPRESS | Grand Island | 1975 | 1996 | |
| Graham Airways | Alaska | | | | | 1932 | 1935 | |
| Grand Aire Express | Ohio | | GAE | GRAND EXPRESS | Toledo Express | 1985 | 2003 | |
| Grand Airways | Nevada | QD | GNV | GRAND VEGAS | Las Vegas McCarran | 1980 | 1996 | |
| Grand Forks Airmotive | North Dakota | | | | Grand Forks | 1975 | 1975 | Scheduled airmail carrier |
| Grand Valley Aviation | Idaho | | | | Driggs–Reed | 1992 | 1995 | Charters and scenic flights |
| Gray Line Air | New York | WS | WSA | | Niagara Falls | 1994 | 1995 | |
| Great American Airways | Nevada | MV | GRA | GREAT AMERICAN | Reno–Tahoe | 1979 | 1997 | |
| Great Arctic Airways | Alaska | | | | Fairbanks | 1996 | 1996 | Operated ATL-98 Carvair |
| Great Lakes Airlines | California | | | | Burbank | 1946 | 1961 | Supplemental air carrier, shut down in 1961 by CAB for combine activity |
| Great Lakes Airlines | Wyoming | ZK | GLA | LAKES AIR | Cheyenne | 1979 | 2018 | Formerly Spirit Lake Airways |
| Great Lakes Commuter | Michigan | | | | Traverse City | 1972 | 1974 | Acquired by Skystream Airlines |
| Great Northern Airlines | Alaska | | | | Fairbanks | 1975 | 1982 | Established as Fairbanks Air Service |
| Great Plains Airlines | | ZN | | | | 1977 | 1979 | Established as Trinity Airlines |
| Great Plains Airlines | Oklahoma | ZO | OZR | OZARK | Oklahoma City Rogers | 2001 | 2004 | |
| Great Planes Express | Kansas | | | | Augusta | 1995 | 1995 | |
| Great Sierra Airlines | California | | | | Lake Tahoe | 1980 | 1981 | |
| Great Southern Airways | Florida | | | | Miami | 1988 | 1989 | Cargo carrier |
| Great Western Air | | | GWA | G-W AIR | | 1994 | 1994 | |
| Great Western Airlines | Oklahoma | DQ | GWS | GREAT WESTERN | | 1975 | 1979 | Scheduled mail and freight services operating Beech 18 |
| Great Western Aviation | South Dakota | | | | Sioux Fall | 1990 | 1990 | Operated Cessna P210R |
| Greater Pacific Airways | California | | | | Los Angeles | 1982 | 1988 | Operated Embraer Bandeirante. Renamed to Air LA |
| Greatland Air Cargo | Alaska | | | | Anchorage | 1995 | 2001 | Operated DHC-4 Caribou |
| Green Bay Aviation | Wisconsin | HE | GBA | | Green Bay–Austin Straubel | 1965 | 1981 | |
| Green Hills Aviation | | | GRH | GREEN HILLS | | 1978 | 1987 | |
| Green Mountain Airlines | New York | | | | New York-LaGuardia | 1979 | 1980 | Operated Cessna 402 |
| Greenbriar Airlines | West Virginia | | | | Greenbrier | 1939 | 1969 | Commuter carrier. Operated Cessna 172 |
| Grey Goose Air Lines | Illinois | | | | Chicago Midway | 1928 | 1929 | Sightseeing service. Operated Ford Trimotor |
| Grognet Flying Service | Michigan | | | | Houghton | 1973 | 1975 | Summer schedule service to Isle Royale |
| Gross Aviation | Washington | | | | Tacoma Narrows | 1972 | 1974 | Air taxi operator |
| Gulf Air International | Florida | | | | Arcadia | 1979 | 1989 | Renamed to Trans Ocean Airways |
| Gulf Air Transport | Louisiana | QG | GAT | GULFTRANS | New Iberia | 1979 | 1989 | Renamed to Trans Ocean Airways |
| Gulf and Caribbean Cargo | | 8G | TSU | | | 2004 | 2009 | |
| Gulf Central Airlines | Florida | BJ | GCN | GULF CENTRAL | Melbourne Orlando | 1981 | 1984 | Established as Devoe Airlines |
| Gulf Coast Airlines | Mississippi | | GFC | GULF COAST | Gulfport | 1971 | 1975 | Renamed to Coastal Airways |
| Gulfstream Airlines | | | GFS | GULFSTAR | | 1971 | 1975 | |
| Gulfstream International Airlines | Florida | 3M | GFT | GULF FLIGHT | Fort Lauderdale–Hollywood | 1990 | 2010 | Now Silver Airways |
| Gulkana Air Service | Alaska | | | | Gulkana | 1963 | 1997 | Operated Cessna 185 Skywagon, Cessna 206, Cessna 402 |
| Gull Air | Massachusetts | JI | | | Hyannis | 1975 | 1987 | Founded by Robert Welch |
| Gull Air | Florida | | GUL | GULL-AIR | Miami | 1982 | 1987 | Was an Air Florida Commuter |
| Guy-America Airways | New York | GK | GAM | GUY AMERICA | New York Kennedy | 1981 | 1984 | See also American Overseas Airlines |
| H ||||||||||
| H & D Aviation | Indiana | | | | Terre Haute | 1980 | 1981 | Renamed to Terre Haute Air Commuter |
| Hageland Aviation Services | Alaska | H6 | HAG | HAGELAND | Anchorage | 1981 | 2008 | Merged with Frontier Alaska |
| Hagerty’s Air Transportation | North Carolina | | | | Charlotte | 1984 | 1984 | Merged into Sunbird Airlines |
| Haines Airways | Alaska | 7A | | | Haines | 1986 | 2000 | Founded by Reg Radcliffe. Operated Piper PA-32 |
| Hammonds Air Service | Louisiana | | | | Houma–Terrebonne | 1977 | 1985 | Operated Piper Navajo, Twin Otter |
| Hampton Air Service | New York | | | | East Hampton | 1936 | 1937 | Operated Stinson Reliant |
| Hanford Airlines | Iowa | | | | Sioux City | 1937 | 1937 | Established as Hanford Tri-State Airlines |
| Happy Hours Air Travel Club | Florida | | | | Miami | 1973 | 1973 | Air travel club founded by James Ruscoe. Operated Lockheed L-1049 Super Constellation |
| Harbor Airlines | Washington | HB | HAR | HARBOR | Seattle–Tacoma | 1971 | 2001 | |
| Harold's Air Service | Alaska | | HAS | HAROLDS | Fairbanks | 1974 | 1986 | Renamed to Friendship Air Alaska |
| Harrisburg Commuter | Pennsylvania | | | | Harrisburg | 1965 | 1970 | Renamed to Pennsylvania Commuter Airlines |
| Hartford Airlines | Connecticut | | | | Robertson Field | 1966 | 1966 | Operated Aero Commander 500 |
| Hartzog Schneck Aviation | Illinois | | | | Chicago Rockford | 1966 | 1969 | Operated Beechcraft King Air |
| HATS Hawaiian Air Tour Service | Hawaii | | | | Honolulu | 1946 | 1950 | Operated Beechcraft D-18 |
| HATS Hawaiian Air Tour Service | Hawaii | | RES | RESORT | Honolulu | 1953 | 1979 | Absorbed Resort Airways in 1967. Operated de Havilland Dove |
| Havasu Airlines | Arizona | HW | HCA | HAVASU | Lake Havasu City | 1963 | 1987 | Subsidiary of Nicholson Air Service and Cumberland Airlines |
| Hawaii Express | Hawaii | | | | Honolulu | 1982 | 1984 | |
| Hawaii Island Hoppers | Hawaii | | | | Honolulu | 1992 | 1992 | Scenic tours |
| Hawaii Jet-Aire | Hawaii | | | | Honolulu | 1968 | 1968 | Third level services. Operated Twin Otter |
| Hawaii Pacific Air | Hawaii | | | | Honolulu | 1973 | 1995 | Operated Carvair |
| Hawaiian Airventures | Hawaii | | | | Keahole | 1992 | 1992 | Scenic tours |
| Hawaiian Pacific Airlines | Hawaii | HP | | | Los Angeles | 1992 | 1992 | Established as Alii Air Hawaii |
| Hawkeye Airlines | Iowa | | | | Ottumwa | 1974 | 1974 | Operated DC-3 |
| Hawkaire | North Carolina | | HKI | HAWKEYE | Charlotte Douglas | 1991 | 2009 | |
| Hawkins and Powers Aviation | Wyoming | | | | Greybull | 1989 | 2006 | Aerial firefighting. Operated Consolidated PB4Y-2 Privateer and Fairchild C-119 Flying Boxcar |
| Hawthorne Nevada Airlines | Nevada | | | | Hawthorne | 1964 | 1969 | Renamed to Nevada Airlines |
| Heartland Airlines | Ohio | | | | Dayton | 1998 | 2001 | Never started operations |
| Helicopter Air Service | Delaware | | | | | 1949 | 1956 | Renamed to Chicago Helicopter Airways |
| Hemet Valley Flying Services | California | | | | Hemet-Ryan | 1946 | 1997 | Aerial firefighting. Operated Boeing KC-97L, PBY Catalina, C-119C |
| Hemisphere Air Transport | | | | | | 1950 | 1957 | A member carrier of North American Airlines |
| Henry's Charter Air Service | Kansas | | | | Concordia | 1965 | 1968 | Operated Cessna 337 and Cessna 210 |
| Hensley Flying Service | Montana | | | | Havre | 1944 | 1978 | |
| Henson Airlines | Maryland | PI | HNA | | Charlotte Douglas | 1962 | 1993 | Rebranded as Piedmont Airlines |
| Henson Aviation | | | HNA | HENSON | | 1967 | 1979 | |
| Hermen's Air | Alaska | 2E | HRM | HERMENS | Bethel | 1974 | 1990 | Established as Galena Air Service |
| Heussler Air | Pennsylvania | | HUS | HEUSSLER | Erie | 1977 | 1994 | Air taxi |
| Hoganair | Ohio | | HGA | HOGAN AIR | Middletown | 1989 | 1998 | Renamed to Miami Valley Aviation |
| Holiday Airlines | California | | | | Oakland | 1956 | 1956 | Operated de Havilland Dove |
| Holiday Airlines | California | HD | HD | HOLIDAY | Lake Tahoe | 1965 | 1975 | intrastate airline that operated Electra. Founder was co-founder of Paradise Airlines |
| Holiday Airlines | New York | | | | Sullivan County | 1970 | 1970 | Known as Catskill Holiday Airlines. Operated Beech 99 |
| Holiday Airlines | New Jersey | | | | Newark | 1979 | 1989 | Owned subsidiary of Clinton Industries |
| Holiday Airlines | California | | | | Orange County | 1988 | 1990 | Renamed to Pacific Coast Airline |
| Holiday Ways | California | | | | Ontario | 1988 | 1990 | Operated Beech 18 |
| Hood Airlines | Texas | | | | Killeen–Fort Hood | 1964 | 1970 | Acquired by Rio Airways. Operated Beech 99 |
| Hooters Air | South Carolina | H1 | | | Myrtle Beach | 2003 | 2006 | Shut down by parent company |
| Hop-A-Jet | | | HPJ | HOPA-JET | | 1999 | 1999 | |
| Horizon Airlines | Virginia | | QXE | HORIZON AIR | | 1964 | 1970 | Operated Piper Navajo and Piper Apache |
| Horizon Airways | Missouri | | | | Kirksville | 1969 | 1976 | Renamed to Air Missouri |
| Horizon Cargo Transport | | | | | | 1978 | 1979 | Renamed to Kahili Airlines |
| Houston Airlines | Virginia | | | | Lynchburg | 1967 | 1967 | |
| Houston Commuter Airlines | Texas | | | | Houston Bush | 1968 | 1968 | |
| Houston Metro Airlines | Texas | | | | Clear Lake City STOLport | 1969 | 1993 | Renamed Metro Airlines |
| Huachuca Airlines | Arizona | 7H | | | Sierra Vista | 1983 | 1985 | |
| Hub Airlines | Illinois | | HUB | HUB | Chicago Meigs Field | 1968 | 1974 | Acquired Commuter Airlines. Operated Beech 99 |
| Hub Air Service | Alaska | | | | McGrath | 1964 | 1976 | Operated Cessna 195, Cherokee Six, Piper PA-22 |
| Hubbard Air Transport | Washington | | | | Seattle Lake Union Seaplane Base | 1919 | 1920 | On 3 March 1919 a B & W Seaplane made the first international US airmail flight |
| Hudson Air Service | Alaska | | | | Talkeetna | 1947 | 2010 | Renamed to Sheldon Air Services |
| Hughes Airwest | California | RW | | HUGHES-AIR | San Francisco | 1968 | 1980 | To Republic Airlines |
| Hughes Float Plane Service | Alaska | | | | Homer | 1990s | 1990s | Air taxi |
| Hulman Airlines | Indiana | | | | Terre Haute | 1968 | 1975 | Established as Hulman Field Aviation. Operated Cessna 310 |
| Hulman Field Aviation | Indiana | | | | Terre Haute | 1959 | 1968 | Renamed to Hulman Airlines |
| Hyannis Aviation | Massachusetts | YB | HAN | AIR HYANNIS | Barnstable | 1977 | 1977 | |
| I ||||||||||
| IAero Airways | Florida | WQ | SWQ | SWIFTFLIGHT | Miami | 1997 | 2024 | Founded as Swift Air. Went bankrupt. |
| IASCO International Air Service Company | California | | | | Los Angeles | 1978 | 1992 | Operated Boeing 727-100 |
| Ilan Airways, Inc. | New York | | | | | 1984 | 1988 | No flights |
| Illini Airlines | Ohio | | | | Chicago Rockford | 1956 | 1957 | Merged with Taxi Air Group to form TAG Airlines |
| Illinois Airways | Illinois | | | | Southern Illinois | 1969 | 1972 | Renamed to Air Illinois. Intrastate scheduled-service carrier |
| ImagineAir | Georgia | | IMG | | Lawrenceville | 2004 | 2018 | |
| Imperial Airlines | | | | | Miami | 1960 | 1961 | Supplemental air carrier previously Regina Cargo Airlines. Grounded after notorious 1961 crash |
| Imperial Airlines | California | II | IMP | | Imperial | 1964 | 1986 | Founded as Visco Flyging Service |
| Imperial Commuter Airlines | California | | | | Imperial | 1967 | 1968 | Operated Beech 18, Beech Bonanza |
| Imperial International | Minnesota | | PNX | PHOENIX | South St. Paul | 1981 | 1992 | |
| Independence Air | Virginia | DH | IDE | INDEPENDENCE | Washington Dulles | 1989 | 2006 | Formed as Atlantic Coast Airlines |
| Independent Air | Georgia | ID | IDN | INDEPENDENT | Atlanta | 1966 | 1990 | Founded as Atlanta Skylarks |
| Indian Wells Airlines | California | | | | Inyokern | 1985 | 1985 | Established as C&M Airlines |
| Indiana Airways | | WY | INA | INDI-AIR | | 1978 | 1980 | |
| Indigo Airlines | Illinois | I9 | IBU | INDIGO BLUE | Chicago Midway | 1999 | 2001 | |
| Industrial Air Transport | California | | | | Ontario | 1945 | 1946 | Trans-Pacific freight carrier. Renamed to Pacific Overseas Airlines. Operated C-54 Skymaster. |
| Indy Air Travel Club | | | | | | 1960s | 1960s | Air travel club established as Four Winds. Operated Convair 880. Charter carrier |
| Inland Air Lines | Wyoming | | | | Casper–Natrona | 1930 | 1952 | Incorporated under Western brand |
| Inland Aviation Services | | 7N | | | | 1996 | 2009 | |
| Inland Empire Airlines | California | CC | IEA | INLAND EMPIRE | Reno–Tahoe | 1978 | 1981 | Acquired by Air Chaparral |
| Inlet Airlines | Alaska | | | | Homer | 1989 | 1999 | Founded by Dennis Rothberg. Established as Cook Inlet Aviation. Operated Piper Cherokee |
| Inter Citiair Express | Washington | | | | Seattle-Tacoma | 1930 | 1930 | Acquired by Alaska-Washington Airways. Operated Stinson Detroiter, Lockheed Vega |
| Inter-City Air Lines | Massachusetts | | | | Boston | 1932 | 1933 | Operated Travel Air 6000 |
| Inter-Island Air | Hawaii | | UGL | UGLY VAN | Kahului | 1990 | 1991 | |
| Inter-Island Airways | Hawaii | | | | Honolulu | 1929 | 1941 | Renamed to Hawaiian Airlines |
| Intercoastal Airways | Illinois | | ICA | INTERCOASTAL | Willow Run | 1986 | 1989 | Operated C-117D |
| Intercontinental Airways | | IL | | | | 1977 | 1981 | Operated Boeing 707-321C, Douglas DC-8-33 |
| Intercontinental US Inc. | New York | | | | New York-LaGuardia | 1960 | 1966 | Operated Carvair, DC-4 |
| Interior Air Taxis | Alaska | | | | Fairbanks | 1965 | 1968 | Third-level services. Affiliate of Interior Airways |
| Interior Airways | Alaska | | | | Anchorage | 1946 | 1972 | To Alaska International Air |
| Intermountain Airways | Colorado | | | | | 1978 | 1978 | To ExpressJet Airlines |
| Intermountain Aviation | Arizona | | IMA | INTER MOUNTAIN | Pinal Airpark | 1969 | 1975 | CIA front acquired by Evergreen |
| International Air Cargo | Massachusetts | | | | Boston | 1974 | 1975 | All-cargo operator |
| International Air Cargo | Michigan | | | | Willow Run | 1980 | 1985 | |
| International Air Response | Arizona | | | | Buckeye | 1997 | 2000 | Established as T & G Aviation. Aerial firefighting |
| International Air Taxi | Alaska | | | | Anchorage | 1965 | 1970 | Operated Cessna 180 |
| International Air Taxi | Alaska | | | | Anchorage | 1980 | 1983 | Affiliated with Wien Air Alaska |
| International Airlines | North Dakota | | | | Minot | 1928 | 1931 | Operated Lockheed Vega. First US operator |
| International Airlines | California | | | | Burbank | 1961 | 1966 | uncertificated carrier |
| International Airlines | Texas | | | | San Antonio | 1966 | 1967 | Operated Douglas DC-7 |
| International Airlines Academy | Illinois | | | | Willow Run | 1972 | 1975 | Renamed Trans Continental Airlines |
| International Cargo Xpress | Michigan | 2C | | | Cincinnati/Northern Kentucky | 1989 | 1994 | Merged into ATI – Air Transport International |
| International Charter Express | Texas | | ICX | INTEX | Houston Bush | 1988 | 1994 | |
| International Parcel Express | | | IPX | SPEED PACK | | 1986 | 1988 | |
| International U.S. | | | | | | 1968 | 1974 | |
| Interstate Air Lines | California | | | | Buchanan Field | 1928 | 1930 | |
| Interstate Airlines | Illinois | | | | Springfield | 1966 | 1968 | Third-level carrier. Operated Cherokee Six |
| Interstate Airlines | Michigan | 8C | INT | INTER-FLIGHT | Willow Run | 1978 | 1986 | Established as Air Traffic Service Corp. |
| Interstate Airmotive | Missouri | | | | Lambert Field | 1968 | 1972 | Small supplemental air carrier. Operated DC-3s |
| Interstate World Airways | California | | | | Los Angeles | 1974 | 1975 | Scheduled all-cargo services |
| Iowa Airways | Iowa | JT | IOA | IOWA AIR | Dubuque | 1985 | 1994 | Agreement with Midway Airlines. Operated Embraer Bandeirante |
| Iowa Airplane Company | Iowa | | | | | 1933 | 1949 | Renamed to Mid-West Airlines |
| Irvine Airways | | | | | | 1932 | 1932 | |
| Island Air | Washington | | | | Bremerton | 1970 | 1970 | Established as Island Sky Ferries. To form Puget Sound Airlines |
| Island Air | Hawaii | | | | Honolulu | 1971 | 1972 | |
| Island Air | New York | | | | Farmingdale | 1976 | 1976 | Operated DC-3 |
| Island Air | Hawaii | WP | MKU | MOKU | Honolulu | 1980 | 2017 | Established as Princeville Airways |
| Island Air | New York | WS | | | Farmingdale | 1984 | 1984 | Successor to Trans East International |
| Island Air Charters | Florida | | ILF | | Fort Lauderdale | 1986 | 2006 | |
| Island Air Ferries | New York | | | | New York-LaGuardia | 1945 | 1953 | Shuttle between JFK and LGA. Operated DC-3, Noorduyn Norseman |
| Island Airlines | Ohio | | | | Erie–Ottawa | 1929 | 1979 | |
| Island Airlines | Massachusetts | | | | New Bedford | 1932 | 1932 | Acquired by Maine Air Transport |
| Island Airlines | Massachusetts | | | | | 1934 | 1934 | Operated six Fairchild 71 |
| Island Airlines | Massachusetts | | | | | 1962 | 1962 | Established as Sky Tours |
| Island Airlines | Massachusetts | IS | ISA | ISLAND | Hyannis | 1991 | 2015 | |
| Island Airlines Hawaii | Hawaii | | ACH | | Honolulu | 1960 | 2002 | Operated Convair 440 |
| Island Airways | Michigan | | | | Charlevoix | 1975 | 2006 | |
| Island Express | | 2S | SDY | SANDY ISLE | | 1996 | 2006 | |
| Island Express Air | Hawaii | | | | Honolulu | 1994 | 1994 | Renamed to Mahalo Air |
| Island Helicopters | New York | | | | Garden City | 1968 | 1977 | Scheduled services to Manhattan |
| Island Mail | Washington | | | | Friday Harbor | 1966 | 1979 | Scheduled commuter services. Operated Cessna 206 |
| Island Pacific Air | Hawaii | | PCR | PACAIR | Honolulu | 1975 | 1977 | |
| Island Sky Ferries | Washington | | | | Bremerton | 1948 | 1950 | Established as Orcas Island Air Service. Operated Lockheed Model 10 Electra |
| Isle Royale Airways | Michigan | | | | Houghton | 1965 | 1965 | Operated Grumman Mallard |
| Isle Royale Seaplane Service | Michigan | | | | Houghton | 1973 | 1975 | Summer schedule |
| ITR Airlines | Colorado | | ITR | OUTBACK | Denver | 1984 | 1985 | Assumed the Frontier Commuter operations |