The following airlines serve Rockford RFD Airport.
- Airlines Served at Rockford Airport
| Airline | Terminal |
|---|---|
| Allegiant Air, G4 | Main Terminal |
- Airlines at Popular Airports
- Hartsfield Jackson Atlanta ATL Airport Airlines
- Chicago O’Hare ORD Airport Airlines
- Dallas Fort Worth DFW Airport Airlines
- Los Angeles LAX Airport Airlines
- Las Vegas McCarran LAS Airport Airlines
- Denver DEN Airport Airlines
- Houston George Bush IAH Airport Airlines
- Phoenix Sky Harbor PHX Airport Airlines
- Philadelphia PHL Airport Airlines
- Charlotte Douglas CLT Airport Airlines
- Detroit Metropolitian DTW Airport Airlines
- Minneapolis-St Paul MSP Airport Airlines
- Newark Liberty EWR Airport Airlines
- Washington Dulles IAD Airport Airlines
- Boston Logan BOS Airport Airlines
- Salt Lake City SLC Airport Airlines
- La Guardia LGA Airport Airlines
- New York Kennedy JFK Airport Airlines
- Memphis MEM Airport Airlines
- Miami MIA Airport Airlines
- San Francisco SFO Airport Airlines
- Orlando MCO Airport Airlines
- Cincinnati N Kentucky CVG Airport Airlines
- Seattle Tacoma SEA Airport Airlines
- Honolulu HNL Airport Airlines
- Baltimore Marshall BWI Airport Airlines
- Ted Stevens Anchorage ANC Airport Airlines
- Chicago Midway MDW Airport Airlines
- Fort Lauderdale Hollywood FLL Airport Airlines
- Lambert St Louis STL Airport Airlines
- Reagan Washington National DCA Airport Airlines
- Portland PDX Airport Airlines
- Tampa TPA Airport Airlines
- Cleveland Hopkins CLE Airport Airlines
- Raleigh-Durham RDU Airport Airlines
- Houston Hobby HOU Airport Airlines
- Pittsburgh PIT Airport Airlines
- San Diego SAN Airport Airlines
- San Antonio SAT Airport Airlines
- Nashville BNA Airport Airlines
