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Horizon Air is a regional airline based in the United States and a subsidiary of Alaska Air Group. Established in 1981, the airline has developed a significant presence in regional aviation, particularly across the Pacific Northwest and western regions of North America. Its operations help connect travelers from smaller and regional communities to major destinations through the wider Alaska Airlines network.
Horizon Air operates under the airline codes QX and QXE, representing its IATA and ICAO identifiers. The airline is headquartered in the Seattle area, with Seattle-Tacoma International Airport serving as its primary hub. Its regional operations are closely connected with Alaska Airlines, providing additional flight options and connections for passengers traveling throughout the western United States.
Horizon Air specializes in regional passenger transportation. Unlike a large international carrier operating an extensive independent long-haul network, Horizon focuses on shorter and medium-distance routes that support connectivity between regional airports and major airline hubs.
The airline operates Embraer E175 aircraft for its scheduled regional passenger services. These aircraft are designed for regional journeys and allow the airline to serve routes where passenger demand and airport requirements are suited to smaller aircraft. Horizon Air's capacity is marketed through Alaska Airlines under a capacity purchase agreement.
Seattle-Tacoma International Airport is Horizon Air's primary hub and an important connection point for regional travel. Through its operations, passengers can connect with destinations across Washington, Oregon, California, Idaho, Alaska, and other parts of the western region of North America.
The airline's regional network supports travel between smaller communities and larger transportation centers. These connections can help passengers continue their journeys through Alaska Airlines' broader domestic and international network, subject to available schedules and connecting services.
Horizon Air's scheduled regional fleet is centered on the Embraer E175. The aircraft is commonly used for regional routes because of its capacity and operating characteristics. Alaska Air Group's published fleet information lists 50 Embraer E175 aircraft operated by Horizon Air as of October 2026.
Passengers traveling on Horizon Air flights should review the details of their specific itinerary for information about aircraft configuration, seating, baggage allowances, onboard services, and available amenities. These details may vary depending on the route and operating arrangements.
Horizon Air plays an important role in supporting Alaska Airlines' regional network. Its flights provide connections between communities and larger airports, helping passengers access additional destinations through connecting itineraries.
Since Horizon Air operates its scheduled capacity for Alaska Airlines, flight schedules, ticketing arrangements, and certain passenger services are generally presented through Alaska Airlines. Travelers should check the operating-carrier information on their itinerary to identify the airline operating each flight segment.
When planning a trip involving Horizon Air, passengers should compare available departure times, connecting airports, total journey duration, and fare conditions. Regional flights may provide useful connections from smaller airports, but the overall travel experience can depend on the connecting schedule and destination.
Regional airlines play an important role in connecting communities that may not have frequent nonstop service from larger carriers. Horizon Air contributes to this network by operating regional flights that link smaller airports with important transportation hubs.
As part of Alaska Air Group, Horizon Air supports a wider network of travel opportunities across the western United States. Its regional operations provide additional connectivity for passengers traveling for business, leisure, family visits, and other purposes.
The IATA airline code for Horizon Air is QX.
The ICAO code for Horizon Air is QXE.
Horizon Air is a subsidiary of Alaska Air Group and operates regional passenger flights under an arrangement with Alaska Airlines.
Horizon Air operates Embraer E175 aircraft for its scheduled regional passenger services.
Horizon Air is based in the Seattle area, and Seattle-Tacoma International Airport is its primary hub.
Horizon Air primarily operates regional services across the western region of North America. Passengers may connect to international destinations through the wider Alaska Airlines network, depending on the itinerary.
Passengers can review their itinerary, departure and arrival details, and current flight status through the airline's official travel information channels.
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