Airlines Served

Your Guide to Airlines Serving Seattle Tacoma Airport

Seattle Tacoma Airport (SEA), also known as Sea-Tac Airport, is one of the busiest airports in the United States. It serves as a hub for Alaska Airlines and Delta Air Lines, and is a focus city for both Southwest Airlines and Horizon Air. With over 500 daily flights to more than 90 nonstop destinations, Sea-Tac Airport is a major gateway to the Pacific Northwest.

Alaska Airlines

As the largest airline based in the Pacific Northwest, Alaska Airlines offers over 300 daily flights from Sea-Tac Airport to more than 60 nonstop destinations across North America, including Hawaii, Mexico, and Costa Rica. Alaska Airlines operates out of the North Satellite Terminal and the South Satellite Terminal.

Delta Air Lines

Delta Air Lines operates over 100 daily flights from Sea-Tac Airport to more than 30 nonstop destinations across North America, including Mexico and Asia. Delta Air Lines operates out of the South Satellite Terminal.

Southwest Airlines

Southwest Airlines operates over 50 daily flights from Sea-Tac Airport to more than 20 nonstop destinations across North America, including Hawaii and Mexico. Southwest Airlines operates out of the Main Terminal.

Horizon Air

As a regional airline owned by Alaska Airlines, Horizon Air operates over 50 daily flights from Sea-Tac Airport to more than 20 nonstop destinations across the Pacific Northwest and Western Canada. Horizon Air operates out of the North Satellite Terminal.

Note that the above information can change at any time. See a complete list of airlines served, including terminal locations below: