About Allegiant Air
Allegiant Air is a low-cost United States airline headquartered in Las Vegas, NV. The carrier operates under the IATA designator G4 and the ICAO designator AAY; air-traffic controllers address its flight crews on the radio with the callsign "ALLEGIANT". The airline was founded in 1997 and currently operates a fleet of approximately 126 aircraft.
Within the US air-travel ecosystem, Allegiant Air sits in the "Low-cost" segment. Low-cost carriers focus on point-to-point flying, lean operations, and unbundled fares. They have re-shaped fare floors in many US markets and are often the price-setter on routes where they overlap with the majors.
Codes & identifiers
| Legal / brand name | Allegiant Air |
|---|---|
| IATA code | G4 |
| ICAO code | AAY |
| Radio callsign | ALLEGIANT |
| Category | Low-cost |
| Headquarters | Las Vegas, NV |
| Year founded | 1997 |
| Fleet size | 126 aircraft |
| Official website | www.allegiantair.com |
Hub & focus airports
The airports below are listed as hubs or focus cities for Allegiant Air. From these airports the carrier operates the densest schedule of nonstop departures, holds the most gate space, and typically supports the broadest range of international or long-haul service.
| Airport | City | State | IATA | Class |
|---|---|---|---|---|
| Harry Reid International Airport | Las Vegas | NV | LAS |
Large hub |
| Orlando Sanford International Airport | Orlando | FL | SFB |
Large hub |
| St. Petersburg Clearwater International Airport | Pinellas Park | FL | PIE |
Large hub |
| Cincinnati Northern Kentucky International Airport | Cincinnati / Covington | KY | CVG |
Large hub |
| Bellingham International Airport | Bellingham | WA | BLI |
Medium hub |
| Memphis International Airport | Memphis | TN | MEM |
Large hub |
| General Wayne A. Downing Peoria International Airport | Peoria | IL | PIA |
Medium hub |
Booking & service notes
Schedules, fares, and aircraft assignments for Allegiant Air change frequently, sometimes weekly. The data on this page is intended as a stable reference for codes, headquarters, fleet scale, and hub list; for live availability, fare class rules, baggage policies, and seat selection, always consult the carrier's own booking system at www.allegiantair.com. When a flight is operated under Allegiant Air's code but flown by a regional partner, the operating carrier is normally disclosed on the booking page; this distinction matters for elite-status benefits and, in rare cases, for irregular-operations rebooking.