Question: What is the name of the international airport in Atlanta into which Shuttle America Corporation, a regional airline based in Indianapolis, fed flights for Delta Airlines?
Context: Chautauqua Airlines, Inc., was an American regional airline and a subsidiary of Republic Airways Holdings based in Indianapolis, Indiana, United States.  Prior to the shut down of operations, it operated scheduled passenger services to 52 airports in the United States and Canada via code sharing agreements as the Delta Connection for Delta Air Lines and AmericanConnection for American Airlines.  Chautauqua previously flew feeder services for other airlines as well via code sharing agreements.  Its last day in operation was December 31, 2014, at which time all flying was absorbed by the Shuttle America certificate. ATA Airlines, Inc. – formerly known as American Trans Air and commonly referred to as ATA – was an American low-cost scheduled service and charter airline based in Indianapolis, Indiana.  ATA operated scheduled passenger flights throughout the U.S. mainland and Hawaii and San Juan, Puerto Rico, as well as military and commercial charter flights around the world.  ATA also operated flights to Portugal (LIS, OPO, TER, PDL and SMA).  In its early days the airline did charters throughout the World and had bases in Chicago, Detroit, New York, Indianapolis, Oakland and Milwaukee.  Later when they entered scheduled service the airlines maintained focus cities at Chicago Midway International Airport, Honolulu International Airport, and Oakland International Airport. Go!Express (marketed as go!Express) was the brand name for the regional airline service of go! , rather than a certificated airline carrier.  Mokulele Airlines was the sole operator of Go!Express between April 17, 2007 and March 24, 2009, when their contract was canceled due to Mokulele's partnership with Shuttle America.  On the same day, Go!  began selling flights operated by Island Air as Go!Express.  Rather than using dedicated aircraft on flights sold exclusively as Go!Express, Island Air's Go!Express service was provided by the carrier's existing flights and aircraft. Shuttle America Corporation was an American regional airline based in Indianapolis, Indiana, USA.  It fed United Airlines flights at Chicago O'Hare International Airport (ORD) and Houston Intercontinental Airport (IAH) under the United Express brand, as well as Delta Air Lines flights at Atlanta (ATL), New York-LaGuardia (LGA), and New York-JFK under the Delta Connection brand.  Shuttle America also operated two of three Delta Shuttle East Coast routes, serving Washington, D.C. and Chicago from New York-LaGuardia. Air Wisconsin Airlines is a regional airline based at Appleton International Airport in the town of Greenville, Wisconsin, United States, near Appleton.  Air Wisconsin is the largest privately held regional airline in the United States.  It currently operates regional jet flights as American Eagle under contract to American Airlines via a code sharing agreement, serving cities in the U.S. and Canada with hubs at Boston Logan International Airport (BOS), Charlotte Douglas International Airport (CLT), Philadelphia International Airport (PHL) and Ronald Reagan Washington National Airport (DCA) .  Air Wisconsin previously operated United Express service on behalf of United Airlines followed by US Airways Express service on behalf of US Airways prior to becoming an American Eagle regional air carrier.  The company has announced it will once again partner with United Airlines as a United Express code sharing air carrier with primary hubs to be located at Chicago O'Hare International Airport (ORD) and Washington Dulles International Airport (IAD) beginning in September 2017 and will be "exclusively operating" as United Express by March 2018. SkyWest Airlines is a North American airline owned by SkyWest, Inc. and headquartered in St. George, Utah, U.S..  According to the Airlines for America definitions, SkyWest is a North American major airline.  SkyWest however, operates on a regional airline level and is a member of the Regional Airline Association.  SkyWest Airlines flies to 238 cities, in 45 states; Washington, D.C., six Canadian provinces and five cities in Mexico.  The airline serves as a feeder airline, operating under contract with various major carriers.  It flies as SkyWest Airlines in a partnership with Alaska Airlines, as United Express on behalf of United Airlines, as American Eagle on behalf of American Airlines, and as Delta Connection on behalf of Delta Air Lines.  SkyWest also provides ground handling services for airports across the United States. Hartsfield–Jackson Atlanta International Airport (IATA: ATL, ICAO: KATL, FAA LID: ATL) , also known as Atlanta Airport, Hartsfield, or Hartsfield–Jackson, is an international airport located 7 mi south of Atlanta's central business district, in the U.S. state of Georgia.  It has been the world's busiest airport by passenger traffic since 1998; and by number of landings and take-offs from 2005 to 2013, losing that title to Chicago-O'Hare in 2014, but regaining it a year later.  Hartsfield–Jackson held its ranking as the world's busiest airport in 2012, both in passengers and number of flights, by accommodating 100 million passengers (more than 260,000 passengers daily) and 950,119 flights.  Many of the nearly one million flights are domestic flights from within the United States, where the airport serves as a major hub for travel throughout the southeastern region of the country.  The airport has 207 domestic and international gates.  ATL covers 4,700 acres (1,902 ha) of land. Peninsula Airways, operating as PenAir, is a U.S. based regional airline headquartered in Anchorage, Alaska.  It is Alaska's second largest commuter airline operating scheduled passenger and cargo service, as well as charter and medevac services throughout the state.  It also operates scheduled passenger service in several regions of the continental U.S. Its main base is Ted Stevens Anchorage International Airport, with other hubs located at Portland International Airport in Oregon, Boston Logan International Airport in Massachusetts and Denver International Airport in Colorado.  PenAir currently has a code sharing agreement in place with Alaska Airlines with its flights operated in the state of Alaska as well as all of its flights in the lower 48 states appearing in the Alaska Airlines system timetable. Mesaba Aviation, Inc. (operating as Mesaba Airlines) was an American regional airline based in Eagan, Minnesota The airline was a wholly owned subsidiary of Pinnacle Airlines Corporation.  Its flights operated as Delta Connection for Delta Air Lines and US Airways Express for US Airways.  Previously, the airline operated as Northwest Airlink and Northwest Jetlink on behalf of Northwest Airlines which subsequently merged with Delta.  Mesaba Airlines effectively ceased operations on January 4, 2012, when all aircraft and personnel were transitioned to the Pinnacle Airlines operating certificate.  Mesaba's operating certificate was surrendered on July 31, 2012. GoJet Airlines LLC is a company headquartered in Bridgeton, Missouri, United States.  Wholly owned by Trans States Holdings, it has 1670 employees.  It operates commuter feeder services under the United Express and Delta Connection names.  Go Jet Airlines has crew bases at Lambert-Saint Louis International Airport, O'Hare International Airport, Denver International Airport, and Raleigh-Durham International Airport.  Flights are currently operated out of United's hubs at O'Hare International Airport and Denver International Airport, as well as Lambert-Saint Louis International Airport.  GoJet's Delta Connection flights currently operate out of Lambert-Saint Louis International Airport , Detroit Metropolitan Airport and Raleigh-Durham International Airport.  Its call sign "Lindbergh" is named after aviation pioneer Charles Lindbergh, who flew the "Spirit of St. Louis" solo across the Atlantic Ocean in 1927, the first person to do so.
Answer: Hartsfield–Jackson Atlanta International Airport