| name | Hub | image | date Ceased operations | date Commenced operations | IATA Code | ICAO Code | city Headquarters | administrative division Headquarters | country Headquarters | continent Headquarters | Country | continent | Parent | number of aircrafts | number of destinations | Website |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Allegheny Airlines | Allegheny County Airport | After 1979 | 08/1957 | AL | ALO | Washington, D.C. | District of Columbia | United States | Americas | United States | Americas | Us airways | 315 | 31 | Website | |
| MidAtlantic Airways | 27/05/2006 | 2002 | BK | PDC | Philadelphia | Pennsylvania | United States | Americas | United States | Americas | Us airways | Website | ||||
| Piedmont Airlines (1948–1989) | Charlotte Douglas International Airport |  | 1989 | 1948 | PI | PDT | Winston-Salem, North Carolina | North Carolina | United States | Americas | United States | Americas | Us airways | 12 | 95 | Website |
| MetroJet (American airline) | Baltimore–Washington International Airport | 2001 | 01/06/1998 | US | USA | United States | Americas | Us airways | 49 | 25 | Website |