G4 / AAY G4 airline code: Allegiant Air
G4 is the IATA airline code for Allegiant Air, based in the United States. Its ICAO airline code is AAY.
Allegiant Air codes
| IATA code | G4 |
|---|---|
| ICAO code | AAY |
| Airline | Allegiant Air |
| Country | United States |
| Status | Listed as operating (data checked 1 October 2026) |
Source: the airline database behind Easy PNR Converter (Wikidata and OpenFlights), checked against Wikidata and Wikipedia on 1 October 2026. IATA codes of airlines that stop flying can later be given to another airline.
How G4 appears in a PNR
In an Amadeus, Sabre, Galileo or Worldspan flight segment the two-character airline code comes first, directly before the flight number, so every flight sold under this code starts with G4. Codeshare flights carry the marketing airline's code, so the airline operating the aircraft can be a different one. Paste a PNR into the free PNR converter and G4 is shown as Allegiant Air with its logo, next to local times and the true flight duration.
Other airlines from United States
- GB ABX Air
- 2Q Air Cargo Carriers
- YI Air Sunshine
- 8C Air Transport International
- ZW Air Wisconsin
- AS Alaska Airlines
- KO Alaska Central Express
- KH Aloha Air Cargo
- 5A Alpine Air Express
- AA American Airlines
- A8 Ameriflight
- M6 Amerijet International
Large airports in United States
- ALB Albany International AirportAlbany
- ABQ Albuquerque International Sunport AirportAlbuquerque
- ANC Ted Stevens Anchorage Intl AirportAnchorage
- ATL Hartsfield–Jackson Atlanta Intl AirportAtlanta
- AUS Austin–Bergstrom International AirportAustin
- BWI Baltimore/Washington Intl AirportBaltimore
- BHM Birmingham-Shuttlesworth International AirportBirmingham
- BOI Boise Air Terminal/Gowen FieldBoise