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Horizon Air is a U.S. airline based in SeaTac (Washington) and is recognised as one of the largest regional airlines in the USA, serving more than 40 cities in the United States and Canada. The planes that Horizon operate are co-branded as Alaska Horizon and to differentiate aircraft from those operated by Alaska's other regional airline partner, SkyWest Airlines.

Horizon Air and its sister carrier Alaska Airlines are subsidiaries of Alaska Air Group and all Horizon-operated scheduled flights are marketed and sold by Alaska Airlines. It has codeshare partnerships with American Airlines and Delta Air Lines.

Baggage Policy

Horizon allows you to bring 1 piece of carry-on baggage and an additional personal item. Horizon Air has a different policy for carry-on baggage and checked baggage.

Carry-on Baggage

Horizon lets you bring 1 carry-on bag and an additional personal item such as a briefcase, laptop or tote bag. Carry-on baggage mustn't exceed 9" x 14" x 22" (23 x 36 x 56 cm) including wheels and handles.

Please ensure that you don't pack any prohibited items in your carry-on baggage such as liquids over 100ml. Any prohibited items packed in your carry-on bag will be removed and disposed of by airport security.

Checked Baggage

Checked baggage is not complimentary. You can purchase checked baggage at the time of booking and pre-booking. Each checked baggage mustn't exceed 50 lbs and 62 in dimensions (linear).

Any checked baggage that exceeds Horizons baggage policy will be charged an excess baggage.


Horizon Air lets you check in online 24 hours prior to your flight scheduled time. Alternatively, you can check-in at the airport.

Online Check-in

Passengers can check-in online and print their boarding passes from 24 hours prior to the flight departure. Online check-in closes one hour prior to scheduled departure. We recommend that you check-in online in order to avoid long queues at the airport.

Airport Check-in

Passengers must be checked in with a valid boarding pass and at the gate no later than 30 minutes before flight departure (40 minutes for international).

Frequent Flyer Programme

Horizon Air frequent flyer programme is called 'Mileage Plan.

Mileage Plan

Horizon operates a frequent flyer program called Mileage Plan to reward regular travellers with the airline. Mileage Plan is the travel rewards program of the Alaska Air Group. MVP and MVP Gold are Mileage Plan's top tiers for experienced travellers.

The program's airline partners also include Oneworld member airlines American AirlinesBritish AirwaysCathay PacificLAN and Qantas; SkyTeam member airlines Air France and Delta Air Lines; as well as Fiji AirwaysRavn Alaska (formerly Era Aviation), Frontier AlaskaMokulele Airlines and PenAir.

Airline Alliance

Along with its parent airline Alaska Airlines, Horizon Air is a part of the Oneworld alliance. The airline became the alliance's 14th member along with American Airlines and others.

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Destinations that Horizon Air flies to

The airline flies to a number of destinations across the United States and Canada. Click below to find all the cities that Horizon Air flies to.

Alternatives to Horizon Air

Alternative airlines to Horizon Air include Alaska Airlines, American Airlines, Southwest Airlines and Alaska Seaplanes. Please click on the logos below to find out more about airlines that fly similar routes:

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Hub Airport

Seattle–Tacoma International Airport

Seattle–Tacoma International Airport (SEA) is an international airport serving the Seattle metropolitan area in the U.S. state of Washington. This airport operates flights to cities across North America, Europe, the Middle East and Asia.

It's the primary hub for Alaska Airlines, and also serves as an international gateway to Asia for Delta Air Lines. Other airlines which fly from SEA include Aer Lingus, Aeroflot, Aeromexico, Air Canada, Air China, Air France, American Airlines, Skywest Airlines, and many others.


14th April 2021

Horizon Air to operate more flights using its E175 on behalf of sister airline Alaska Airlines

The addition of the E175 jet (which will be operated by Horizon Air) will give Alaska Airlines the ability to increase daily flight scheduled on the route between Anchorage (ANC) and Fairbanks (FAI). The airline will now also be able to provide a year-round service to King Salmon (AKN) and Dillingham (DLG). With 76 seats, the smaller E175 jets are an ideal size for flying to more remote communities.

Class Fares

The seating available depends on the aircraft being operated.

De Havilland Canada Dash 8-400: This aircraft is high-speed, high-wing turboprop, operrated in a single class configuration. There are 76 seats in total, all of which are upholstered in leather. These seats are padded and comfortable, but are non-reclining.

The Embraer E175: This larger plane has a three-class configuration (first class, premium class, and main cabin) with 76 in total. All seats are upholstered in leather and recline seats. The premium (business) section of the aircraft has two seats either side of the aisle, the first class section has three seats in total, with a single seat on one side of the aisle and two seats on the other.


The airline operates narrow body aircraft including De Havilland Canada Dash 8-400 and Embraer E175.

Frequently asked questions

Is Horizon Air part of Alaska Airlines?

Yes, both Horizon Air and Alaska Airlines are subsidiaries of Alaska Air Group. Horizon Air is often referred to as Alaska Airlines ‘sister airline’, with all Horizon-operated scheduled flights marketed and sold by Alaska. This means that when you board the plane, you’ll see Alaskan Airlines branding.

What planes does Horizon Air operate?

Horizon Air operates a fleet of Bombardier Q400 aircraft and 30 Embraer 175 aircraft. The onboard experience will depend on the aircraft being operated, which is detailed during the booking process when you book your Horizon air flight through Alternative Airlines.

Can I buy Horizon Air flights on finance?

Of course! When you book through Alternative Airlines you can split the cost of your flight in easy and manageable instalments. We offer a number of financing options that let you spread the cost of your flight ovr weekly, bi-weekly or monthly instalments. This includes Klarna, Zip, Afterpay and many more. The payment plan provider available at checkout will depend on the country in which you reside in.