Southeastern Airlines was a regional airline

Regional airline

Regional airlines are airlines that operate regional aircraft to provide passenger air service to communities without sufficient demand to attract mainline service...

 that was acquired by Atlantic Southeast Airlines

Atlantic Southeast Airlines

Atlantic Southeast Airlines is an American airline based in the A-Tech Center in College Park, Georgia, flying to 144 destinations as a Delta Connection carrier and, as of February 2010, commenced service as a United Express carrier. It is a wholly owned subsidiary of SkyWest, Inc. ASA operates...

, a Delta Connection

Delta Connection

Delta Connection is the name under which a number of individually owned regional airlines and one wholly owned regional carrier operate short and medium haul routes in association with Delta Air Lines Inc...

 carrier, on April 1, 1983. It was formed in 1982 by Atlanta entrepreneur Michael J. Brady, who had formerly been head of Eastern Metro Express, a feeder for Eastern Airlines.

The airline was originally known as Southeastern Commuter Airlines, but the "Commuter" part was dropped at some point before the merge with ASA. Southeastern served many cites in the southeast, mostly in the state of Georgia, using Atlanta

Hartsfield-Jackson Atlanta International Airport

Hartsfield–Jackson Atlanta International Airport , known locally as Atlanta Airport, Hartsfield Airport, and Hartsfield–Jackson, is located seven miles south of the central business district of Atlanta, Georgia, United States...

as a hub.