Which concourse does my airline use at Sea-Tac?

Concourse A: Delta. Concourse B: Mix (some Delta, some others). Concourse C + D: Alaska Airlines (mega-hub home). North Satellite: Alaska + some Delta. South Satellite: ALL international long-haul (BA, Lufthansa, KLM, Air France, Korean, ANA, JAL, Emirates, Qatar, Singapore, Asiana, Hainan, EVA Air, Aeroméxico, Icelandair). United / American / Southwest / JetBlue / Spirit / Frontier / Hawaiian use various concourses.

How do I get from Sea-Tac to downtown Seattle?

Link Light Rail — $3.00, 40 min direct to Westlake (downtown). Best option. Station at SEA connected by sky bridge. Runs every 6-15 min. Taxi $50 flat to downtown. Uber/Lyft $25-$45. The light rail connects to Seattle Center (Space Needle area) + Capitol Hill + University District.

How long do I need for a Seattle terminal transfer?

Main terminal concourses (A, B, C, D) are airside-connected — 10-25 min walk. To/from North Satellite: 3-min APM + walk. To/from South Satellite: 5-min APM + walk. Allow 75 min for any inter-concourse domestic connection, 90-120 min if reclearing security. International arrivals use the new IAF + walk back to main terminal.

Can I leave Sea-Tac during a layover?

Yes for US-eligible passport holders. Take the Link Light Rail to downtown (40 min). Allow 4-5 hours minimum round trip. Quick options: Pike Place Market (2-3h), Space Needle area (3h), Capitol Hill for food (90 min round). For shorter layovers, the airport has a full Sub Pop record shop + microbrewery.

How early should I arrive at SEA?

Domestic: 2 hours. International: 3 hours. SEA security can hit 45-90 min waits on Sunday evenings + Friday mornings + summer peak. Pre-Check + Clear both work. Alaska's Seattle-area MVP Gold members get priority security. Walking from Main Terminal to South Satellite takes 15-20 min plus APM — factor that into international connections.

SEAKSEA

Seattle-Tacoma International Airport

Seattle, United States · 52.6M (2024) passengers / year · 3 terminals

MAIN NSAT SSAT

At a glance

IATA / ICAO

SEA / KSEA

Passengers / year

52.6M (2024)

Terminal structure

Single main + 2 satellites (N + S)

Concourses

A · B · C · D + North + South satellites

Runways

3 parallel

Main hubs

Alaska Airlines + Delta Air Lines

Distance to downtown Seattle

22 km / 14 mi south

Terminals + flights

Tap a terminal to filter airlines, lounges and flights

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Terminals

MAINMain Terminal

Single terminal, multiple concourses (A, B, C, D)

Airlines (9)

Main terminal with concourses A, B, C, D + 2 satellites. Alaska's mega-hub at concourses C + D.

NSATNorth Satellite

Alaska + Delta domestic

Airlines (1)

Renovated 2021 — Alaska expanded its lounge here. Reached by underground APM (3 min).

SSATSouth Satellite

International + foreign carriers

Airlines (15)

International long-haul. Reached by separate APM from Main Terminal. New IAF (International Arrivals Facility) opened 2022.

Notable flights

33 shown

Flights we have seen operating from dated fare data, most frequently seen first. Tap a flight number for its route, usual departure time and flight time.

AS21← JFK

Alaska Airlines · New York

Philippine Airlines · Manila

Departs 21:30

AS22→ JFK

Alaska Airlines · New York

Departs 23:15

AS17← JFK

Alaska Airlines · New York

6h 28m flight

AS34→ JFK

Alaska Airlines · New York

Departs 13:30

VS9904← LHR

Virgin Atlantic · London

10h 20m flight

AS101← LHR

Alaska Airlines · London

10h 00m flight

AS26→ JFK

Alaska Airlines · New York

Departs 09:28

VS4829→ LHR

Virgin Atlantic · London

Departs 17:30

SQ27→ SIN

Singapore Airlines · Singapore

Departs 08:40

AA6908← LHR

American Airlines · London

Alaska Airlines · New York

6h 25m flight

PR124← MNL

Philippine Airlines · Manila

12h 30m flight

SQ28← SIN

Singapore Airlines · Singapore

14h 45m flight

AA6910← LHR

American Airlines · London

9h 45m flight

+ 15 more flights — filter by terminal to narrow down.

Lounges

Alaska Lounge

MAIN

Alaska Lounge+ membership · Alaska MVP Gold + transcon

Multiple locations: Concourse C (largest), Concourse D, North Satellite.

Delta Sky Club

MAIN

Delta Sky Club membership

Concourse A — Delta's Seattle hub lounge.

United Club

MAIN

United Club membership

Centurion Lounge

MAIN

Amex Platinum / Centurion

AMEX flagship at SEA.

Club at SEA

SSAT

PriorityPass · Pay-per-use $50

British Airways Lounge

SSAT

BA Club + oneworld Sapphire

Mode	To	Cost	Time	Notes
Link Light Rail	Downtown Seattle (Westlake)	$3.00	40 min	Direct light rail. Station at SEA, connected by sky bridge.
King County Metro	Various Seattle districts	$2.75	60-90 min
Taxi (flat rate)	Downtown Seattle	$50 flat	25-50 min
Uber / Lyft	Downtown	$25-$45	25-50 min
Shuttle Express	Hotels + suburbs	$20-$45	40-90 min

Seattle-Tacoma International Airport

At a glance

Terminals + flights

Terminals

Notable flights

Lounges

To / from Seattle

SEA — Frequently asked

Other major airports