About Horizon Air
Horizon Air is a regional United States airline headquartered in SeaTac, WA. The carrier operates under the IATA designator QX and the ICAO designator QXE; air-traffic controllers address its flight crews on the radio with the callsign "HORIZON". The airline was founded in 1981 and currently operates a fleet of approximately 41 aircraft.
Within the US air-travel ecosystem, Horizon Air sits in the "Regional" segment. Regional carriers operate the smaller jets and turboprops that feed traffic into the major hubs. Most of their flights are operated under the brand of a major partner, but the safety oversight, crews, and aircraft remain the regional carrier's responsibility.
Codes & identifiers
| Legal / brand name | Horizon Air |
|---|---|
| IATA code | QX |
| ICAO code | QXE |
| Radio callsign | HORIZON |
| Category | Regional |
| Headquarters | SeaTac, WA |
| Year founded | 1981 |
| Fleet size | 41 aircraft |
| Official website | www.alaskaair.com |
Hub & focus airports
The airports below are listed as hubs or focus cities for Horizon 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 |
|---|---|---|---|---|
| Seattle–Tacoma International Airport | Seattle | WA | SEA |
Large hub |
| Portland International Airport | Portland | OR | PDX |
Large hub |
| Boise Air Terminal/Gowen Field | Boise | ID | BOI |
Large hub |
Booking & service notes
Schedules, fares, and aircraft assignments for Horizon 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.alaskaair.com. When a flight is operated under Horizon 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.