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Seattle, Washington Airport
Seattle/Tacoma International Airport (SEA)
When to Arrive at the Airport
With bags: 2 hours* prior to scheduled departure
Without bags: 90 minutes* prior to scheduled departure
Please see our Check-in and Boarding Cut-off Times.
* 60 minutes for MVP Gold Members and Portland Shuttle passengers using the express security line
Airport Location
17801 International Blvd, Seattle, WA 98158
(14 miles south of Seattle; 20 miles north of Tacoma)
Ticket Counter Location
North end of terminal
An Alaska Airlines Airport of the Future® check-in location
Alaska and Horizon Ticket Counter Hours
Daily: 3:30 a.m. - 11:00 p.m.
Gate Locations
Alaska: Concourse C, D, N (International flights may arrive at the S Concourse)
Horizon: Concourse B, C, S (International flights may arrive at the S Concourse)
Horizon: Concourse B, C, S (International flights may arrive at the S Concourse)
Airport Map
Select image to enlarge
Airport Check-In Kiosk Locations
- Ticketing/Bag Dropoff Area
- Parking garage skybridge nearest Horizon Air
- Parking garage skybridge nearest Alaska Airlines
- Freestanding between Horizon ticket counter and C security checkpoint
- Auxiliary counter (across from main counters)
- Concourse D - left of Alaska Airlines Service Center
- Gates C1, C3 and C10
- Gates D1, D3, D5 and D8
Offsite Check-In Kiosk Locations
- Thrifty Rent-A-Car Parking Lot
- WestCoast Sea-Tac Hotel / Masterpark Lot A inside hotel lobby
- Masterpark Lot B at S 170th and International Blvd
- Budget Parking Lot
- Dollar Park-N-Fly Lot
- Doubletree Hotel lobby
Board Room
Air Cargo Pickup/Dropoff