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Seattle Tacoma SEA Airport Terminal Map

Main Terminal / Concourses at Seattle Tacoma SEA Airport

Sea-Tac Airport terminal layout, check-in information, Getting Around, International Arrivals, Skywest operations, and Terminal details:

The passenger terminal complex at Seattle/Tacoma’s Sea-Tac Airport is shaped like a bow, consisting of a main terminal with North & South train stations, surrounded by the Central Terminal with access to Concourses. 
The Main Terminal's North & South Stations are to the right & left of the complex, connecting both ends by train.  The South Satellite (S gates) serves all international arrivals (except those with U.S. preclearance).

Check-in Information: 
(a) New check-in kiosks from select Airlines to print boarding passes are available for passengers without luggage, Those with luggage on Alaska Airlines and Horizon Air can get their boarding pass and then take their luggage right to their airline's baggage drop area. Note that Alaska Airlines offers self-bag-tagging option - enabling customers to print & attach baggage tags at self-service kiosks in the lobby, then show I.D. and drop bag off with airline employee for screening & loading onto aircraft.
(b) Holders of the Global Entry card can reduce average wait time by 70 percent.
(d) Self-Service Automated Passport Control: The 14 new kiosks cut waiting time through customs in half
(c) There light rail station has a new flight information display.

Getting Around at Sea-Tac International:
  Concourses A, B, C & D are connected at post-security, enabling passengers to freely move around without having to leave the secured area. The satellites (N & S gates) are linked to the main terminal by continuously running underground loop trains. If your flight will depart from one of the satellite terminals, add an extra 10-15 minutes to your boarding schedule.
Connecting  between terminal and between gates, you can take the STS train to/from the Main Terminal's North Station to/from its South Station. To avoid a lengthy walk from the Main Terminal to the Concourses and satellite gates, use the shuttle train:
1, the South Train Loop between the main terminal South station and the B & S Gates;
2. the North Train Loop between the main terminal North station and the C and N gates; and
3. the shuttle train between North & South Terminal Stations with connections to N & S Gates:
(a) Between N gates & S gates: take the train from South or North Satellite to the Main Terminal, then cross over and take the train on the opposite side, which is the shuttle that runs at post-security between the North & South stations.
(b) Between South Satellite & Concourse C: take first the train from the South Satellite to the Main Terminal, cross over to the shuttle to the North Transit Station, from there cross again to the train at the opposite side to take you to the end of Concourse C.

International arrivals:  Passengers arrive at the South Satellite (whether changing planes or ending their trip at Sea-Tac) and then go through immigration clearance, pick up checked luggage, continue to customs (taking 30-60 minutes), and (from here on procedures differ):
(a) If you end your trip at SeaTac, put your luggage on the high-speed conveyor which will deliver it to the Baggage Claim. Proceed to the Main Terminal to pick up your luggage at the Baggage Claim carousel 1. (Ground Transportation Information Booth is on level 3 of the parking garage.)
(b) If you need to transfer to a domestic flight at Sea-Tac International, you must recheck your luggage and go through TSA security screening prior to proceeding to your connecting flight. If you have duty-free liquid items, put them in our checked luggage to prevent confiscation at the security checkpoint.

Currently SkyWest Airlines operates as: United Express, Delta Connection or Alaska Airlines; their gate locations are:
United at NorthTerminal, baggage claims 15,16; 
Delta at South Satellite, baggage claims 3, 4;  and
Alaska at North Satellite & Concourses C & D, baggage claims 12-15.


The Main Terminal at Sea-Tac Airport consists of a lower level baggage claim level, a ticketing level and a Mezzanine; the center of the bow-shaped Main Terminal is also referred to as 'Central Terminal' - with direct access from its center to B & C gates as well as to  A & S and D & N gates on either side. There are two Travelex foreign exchanges in the ticketing level (next to ‘Seattle’s Best Coffee’ & next to ‘Starbucks’) and one in the baggage claim area (near door 6). ATM machines are located throughout the Main Terminal pre- and post-security, and its concourses & satellites. The ticket counters 1 to 6 correspond to the skybridge numbers leading to the parking garage's level 4 and Skybridge 6 also leads to the pedestrian walkway to the Link Light Rail Station and to the public buses. 
Food & drink, as well as shops, are available at all levels & concourses.
The baggage claim level has an Arrivals Hall with a Pet Potty outside near doors 00 and 26 on either side.
USO Sea-Tac Center
is on the Mezzanine Level, open 24/7, has full service, including showers (tel. 206-433-5438 or visit

Concourses, North & South Satellites, their respective airlines & gates and amenities/services:

Concourse A is presently served by Air Canada,  & Sun Country, US Airways & United  /United Express - at gates A1 to A14. Opposite gate 4, two levels down, is transit to B, S & D gates, & connection to C & N gates.
Travelex foreign exchange is near the security check. Across from the food court are exits to the main terminal, and past gate A1 leads to B gates.
Concourse B is presently served by Frontier, Southwest & Virgin America - at gates B3 to B15.  At gate 11, two levels down, is transit to A, S & D gate and  C & N gate connection.
An ATM cash machine is next to gate B3, a children’s play area, is next to the exit to the main terminal, with connections to both Concourse A and Central Terminal in the same area. 
Concourse C is presently served by Alaska Airlines only (& in Concourse D & North Satellite) - at  gates C2A through C2M & C3-C20. Near gate C14, go down to transit to D & N gates, with connections to A, B & S gates.
An ATM cash machine is opposite gate 8, Horizon Air Customer Service are near gate C3, and the Alaska Board Room is in the connector to D & N gates. Near ‘InMotion DVD Rentals’ you can connect to the Central Terminal. The Regus Business Center is at gate C3.
Concourse D is presently served by Alaska, American & JetBlue  - at gates D1 to D11.
Opposite gate D3, down 2 levels, is transit to C & N gates, & shuttle to A gates, with connections to B & S gates. Opposite gate D3 is the exit to the main terminal; past gate D1 leads to the Baggage Claim of the Central Terminal, and at opposite side to the C gates. Opposite from the gate 3 area is a separate area which includes elevator, escalator & stairway to the North Satellite; two levels down is the transit to C & N gates, the shuttle to A gates, with connections to B & S gates.
The North Satellite is presently served by Alaska & United airlines at gates N1 to N16.
Near gate N10, down one level, is transit to Main Terminal, baggge claim & all other gates.  The United Club in on the transit level. A cash machine is near gate N2; United Airlines Customer Service is near gate N16. Escalators, elevators & stairways lead to the main terminal and to the train station.
The South Satellite is presently served by ANA, Asiana, Avianca, British, Condor, Delta, Emirates, EVA, Hainan, Hawaiian, Icelandair, Lufthansa & Korean airlines - at gates S1 to S16.  Between gates S9 & S10, down one level, is transit to main terminal, baggage claim & other gates.
Near Gate 9 is tDelta Club, and British Airways Terrace Lounge. On Concourse level, near gate 8 is Club International.
All international arrivals, except those from airports with customs pre-clearances, arrive at this terminal.  A Travelex foreign exchange, an ATM machine & a duty-free shop are in the center, and a connector leads to the Customs area with the elevator, escalator & stairway to Main Terminal & train station.  Near gate S8 is Club International, & near gate S9 is the Delta Sky Club;  while just before gate S10 is the British Airways Terrace Lounge.

Seattle Tacoma SEA Airport

Concourse A Concourse B
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Walk Route

Go towards Gate A1 to exit Concourse into Central Terminal and turn left into Concourse B
Walk Time: 7 min

Shuttle Route

Exit Concourse A. Walk to Main Terminal South Station, walk through the station and board train to Concourse B. Pass Satellite South. Exit train at Concourse B and enter Concourse B.
Shuttle Time: 3-13 minutes min

Through Security? No

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