| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chautauqua Airlines |  | 31/12/2014 | 1973 | RP | CHQ | Indianapolis | Indiana | United States | Americas | United States | Americas | Republic Airways Holdings | 41 | 52 | Website | |
| Frontier Airlines | Denver International Airport |  | 05/07/1994 | F9 | FFT | Denver | Colorado | United States | Americas | United States | Americas | Republic Airways Holdings | 65 | 65 | Website | |
| Lynx Aviation | Denver International Airport | 2011 | 2006 | Denver | Colorado | United States | Americas | Republic Airways Holdings | 4 | 4 | Website | |||||
| Midwest Airlines | Milwaukee Mitchell International Airport | 2010 | 1948 | YX | MEP | Oak Creek, Wisconsin | Wisconsin | United States | Americas | United States | Americas | Republic Airways Holdings | 33 | 18 | Website | |
| Midwest Connect | Milwaukee Mitchell International Airport | 2010 | 1994 | Oak Creek, Wisconsin | Wisconsin | United States | Americas | United States | Americas | Republic Airways Holdings | 13 | 17 | Website |