# List of airlines of Ontario

This is a list of airlines that are based in Ontario which have an air operator's certificate issued by Transport Canada, the country's civil aviation authority.

## Current airlines

| Airline | IATA | ICAO | Callsign | Hub airport(s) or headquarters | Notes |
| Adler Aviation | | SWH | SHOCKWAVE | Waterloo | Charters, cargo, flight training |
| AirExpress Ontario | | | | Ottawa Macdonald–Cartier, Chatham-Kent, Oshawa Municipal | Charters |
| Bearskin Airlines | | BLS | BEARSKIN | Sioux Lookout, Thunder Bay | Regional, scheduled passenger service, charters |
| Brock Air Services | | BRD | BROCK AIR | Kingston/Norman Rogers | Charters and MEDIVAC (air ambulance) |
| Cargojet | W8 | CJT | CARGOJET | John C. Munro Hamilton | Cargo |
| First Air | 7F | FAB | FIRST AIR | Yellowknife, Iqaluit | Scheduled passenger service, cargo, charters |
| Flightexec | | FEX | | Buttonville, London | Charter airline, MEDIVAC (air ambulance) |
| Helicopter Transport Services | | | | Carp | Charters, MEDIVAC (air ambulance), aerial firefighting |
| Nakina Air Service | T2 | | | Nakina | Floatplane charters |
| Ornge | | | | Thunder Bay, Sioux Lookout, Timmins/Victor M. Power | Air ambulance |
| Porter Airlines | PD | POE | PORTER AIR | Billy Bishop Toronto | Regional airline |
| Silverline Helicopters | | | | Holland Landing | |
| SkyLink Aviation | | SKK | SKYLINK | Toronto Pearson | Charters, cargo |
| SkyLink Express | | SLQ | SKYLINK | Toronto Pearson | Charters, cargo |
| Stanton Airways | | | | Orillia/Lake St John | Floatplanes, charters and fly-in fishing camps |
| Superior Airways | | | | Red Lake | Charters |
| Thunder Airlines | | THU | AIR THUNDER | Thunder Bay | Scheduled passenger service, charters |
| Voyageur Airways | VC | VAL | VOYAGEUR | North Bay/Jack Garland | Charters, MEDIVAC (air ambulance) |
| Wasaya Airways | | WSG | WASAYA | Thunder Bay | Scheduled passenger service, charters |
| White River Air | | WRA | | White River | Fly-in outposts |
| Wilderness Air | | | | Vermilion Bay | Floatplanes, fly-in fishing camps |

## Defunct airlines

| Airline | IATA | ICAO | Callsign | Hub airport(s) or headquarters | Notes |
| 30000 Island Air | | | | Parry Sound Harbour | 2000? - ?, charter rental and leasing service air operator based in Parry Sound, Ontario using de Havilland Canada DHC-2 Beaver |
| Air Ontario | GX | ONT | ONTARIO | London | 1987 - 2001, to Air Canada Jazz |
| Air Toronto | CS | CNE | CONNECTOR | Toronto Pearson | 1984-19991 |
| AllCanada Express | | CNX | CANEX | Toronto Pearson | 1992 - 2005 |
| Austin Airways | AAW | | | Timmins/Victor M. Power | 1934 - 1987, to Air Ontario |
| Canada 3000 | 2T | CMM | ELITE | Toronto Pearson | 1988 - 2001, formerly Canada 2000; Canada 3000 Cargo sold to Cargojet and 2005 revival failed |
| City Express | | | | Peterborough | 1971 - 1991, founded as Air Atonabee 1971 |
| Great Lakes Airlines | | | | Sarnia Chris Hadfield | 1958 - 1983, to Air Ontario |
| Intair | ND | INT | INTAIR | Toronto Pearson | 1989 - 1991, established by City Express as a successor to Skycraft Air Transport |
| Millardair | | | | Toronto Pearson | 1962 - 1990, continued as aircraft maintenance and servicing firm Millard Air Incorporated (Millardair MRO) 1990-2012 |
| NAC Air | | HMR | HAMMER | Thunder Bay | 2000 - 2008, North American Charters was 100% First Nations owned |
| NorOntair | | NOA | NORONTAIR | Sault Ste. Marie | 1971 - 1996, airline operations of Ontario Northland Transportation Commission |
| Odyssey International | OL | ODY | ODYSSEY | Toronto Pearson | 1988 - 1990, name, aircraft and some employees were merged with Nationair, and operated as a separate division of Nolisair for a short period of time |
| Ontario Central Airlines | | NUN | NUNASI | Kenora | 1947 - 1991?, became Nunasi-Central Airlines in 1984 and then to Nunasi-Northland Airlines in 1987 |
| Ontario Express | 9X | OEL | PARTNER | | 1980s - 1998, to Canadian Airlines |
| Pem-Air | PD | OEM | PEM-AIR | Pembroke | 1970 - 2002 |
| Roots Air | 6J | SSV | SKYTOUR | Toronto Pearson | 2000 - 2001, part of Roots Canada, ceased operations when ownership acquired by Air Canada |
| Skycraft Air Transport | | | | Oshawa | 1977 - 1989, reincarnated in 1989 and operating until 1994. |
| Skyservice Airlines | 5G | SSV | SKYTOUR | Toronto Pearson | 1986 - 2010, differs from existing Skyservice Business Aviation - same owners |
| Soundair | | SDR | SOUNDAIR | Toronto Pearson | 1973-1990, owned Odyssey International and Air Toronto. Previously Owen Sound Air Services. DBA Soundair Express. |
| Starratt Airways | | | | Hudson, Kenora District | 1932 - 1942, to Canadian Pacific Airlines |
| Vacationair | | | | Toronto | 1988 - 1990, initiated by Gray Coach Lines |
| Vision Airways Corporation | V6 | VSN | VISION | Timmins/Victor M. Power | ? - 1994 |
| Vistajet | | VJT | VISTA | Ottawa, Toronto, Windsor | 1997 - 1997 |
| Zoom Airlines | Z4 | OOM | ZOOM | Ottawa Macdonald–Cartier | 2002 - 2008, named acquired for new XPO Airlines 2009 |