Seattle-Tacoma International Airport Guide (SEA) – Seattle

Airport Overview

Seattle-Tacoma International Airport (SEA), commonly known as "Sea-Tac," is the primary airport serving the greater Puget Sound region of Washington State, handling approximately 50 million passengers annually. Located 14 miles south of downtown Seattle in the city of SeaTac, the airport serves as the largest hub for Alaska Airlines and a significant hub for Delta Air Lines, with growing international service to Asia, Europe, and beyond. SEA is the gateway to the Pacific Northwest and serves a growing technology-industry workforce flying between Seattle and major tech hubs in California, New York, and internationally.

The airport recently completed a major expansion program including the opening of the International Arrivals Facility (IAF), a $968 million international arrivals building with expanded customs and immigration facilities and improved passenger processing times. SEA is also known for championing locally sourced Pacific Northwest food and beverage options throughout its extensive concourse dining program.

Terminals

SEA operates as a single main terminal with five concourses (A, B, C, D, and N/S) extending from the central building, connected by the underground Central Terminal Tunnel people mover.

• Concourse A: Alaska Airlines primary hub operations, domestic routes; Gates A1–A19
• Concourse B: Alaska Airlines domestic and some international; Gates B1–B20
• Concourse C: Delta Air Lines, United Airlines, Southwest Airlines, and others; Gates C1–C22
• Concourse D: International departures for non-Alaska/Delta carriers including British Airways, Lufthansa, Air France, Condor, and Pacific Rim carriers; international arrivals processed at the adjacent IAF; Gates D1–D25
• Concourse N/S (Satellite): Alaska Airlines expansion gates; connected to the main terminal by an underground walkway; Gates N1–N20 and S1–S12

WiFi Availability

SEA provides complimentary WiFi throughout all concourses and common areas via the "SeaTac Free WiFi" or "SEA Free WiFi" network. Connect by selecting the network and accepting the terms of service — no time limits or passwords required. Speeds are generally strong throughout the recently expanded terminal areas. Charging stations and USB outlets are plentiful, especially in the newer satellite concourses. Boingo Wireless premium plans are also available throughout the airport.

Transport to City Center

Link Light Rail (Sound Transit)

The Sound Transit Link Light Rail 1 Line connects Sea-Tac Airport Station directly to downtown Seattle, terminating at Westlake Station. The journey takes approximately 38–40 minutes and costs $3.25 one-way (fare depends on distance). Trains run every 6–15 minutes from approximately 5:00 AM to 1:00 AM daily. The airport station is located on the ground floor of the parking garage, accessible via a short covered walkway from the main terminal. This is by far the most reliable and cost-effective transit option.

Bus Services

King County Metro routes and Sound Transit express buses provide connections to various Seattle neighborhoods and South King County destinations. The Bellevue and Eastside communities are served by ST Express Route 560. Shuttle Express and other private services offer connections to hotels throughout the Greater Seattle area.

Taxi and Rideshare

Taxis and rideshare services (Uber, Lyft) depart from the designated third-floor pickup area of the parking garage, accessed via the terminal's third level. A taxi to downtown Seattle costs approximately $45–$60 and takes 25–45 minutes depending on I-5 traffic. Rideshare typically runs $30–$50. Traffic on I-5 through the Tukwila and SoDo areas can be very slow during weekday rush hours.

Airport Lounges

SEA has strong lounge offerings anchored by Alaska Airlines' flagship lounge and Delta's club, with growing independent options.

• Alaska Airlines Lounge – Concourse C: Alaska's primary SEA lounge with Northwest Pacific food and beverage focus; accessible to MVP Gold and Gold 75K members and Board Room cardholders
• Alaska Airlines Lounge – Concourse D: Second Alaska lounge location for international departures
• Delta Sky Club – Concourse C: Delta's SEA club for Medallion members and Sky Club cardholders
• The Centurion Lounge – Concourse C: American Express's Seattle lounge with Pacific Northwest–inspired cuisine and craft cocktails
• United Club – Concourse C: For MileagePlus Premier members and United Club cardholders
• Club SEA (Concourse B): Priority Pass–accepting lounge with food, drinks, and a quiet atmosphere; day passes also available

Hotels Near the Airport

Sea-Tac has an extensive selection of hotel options, many within minutes of the terminal with complimentary shuttle service.

• Marriott Seattle Airport: Connected directly to the terminal via an overhead walkway from the parking structure — extremely convenient; full-service hotel with restaurant and pool
• Hilton Seattle Airport & Conference Center: Complimentary shuttle, less than 1 mile from the terminal, with conference facilities and multiple dining options
• Hyatt Regency Seattle (Downtown): Downtown Seattle's top convention hotel, accessible via Link Light Rail in 40 minutes
• Embassy Suites Seattle-Tacoma International Airport: All-suite hotel with complimentary breakfast and evening reception, approximately 2 miles from SEA
• Cedarbrook Lodge: Boutique eco-luxury hotel 1 mile from the airport surrounded by natural landscape; a standout choice for Pacific Northwest atmosphere

Food and Restaurants

SEA is celebrated for its commitment to Pacific Northwest cuisine, craft beverages, and local sourcing, with numerous local Seattle brands represented throughout the concourses.

• Beecher's Handmade Cheese (Concourse C): Seattle's iconic artisan cheesemaker with mac & cheese, cheese plates, and fresh curds — one of the most beloved airport dining concepts in the U.S.
• Mod Pizza (Concourse B): Seattle-founded fast-casual pizza chain with custom toppings and unlimited toppings for one price
• Ivar's Seafood Bar (Concourse D): Seattle's legendary fish-and-chips chain serving Pacific Northwest salmon, halibut, and chowder since 1938
• Elysian Brewing Company (Concourse C): Seattle craft brewery with an extensive tap list of Pacific Northwest IPAs, stouts, and seasonal ales
• Portage Bay Café (Concourse B): Seattle brunch institution serving farm-to-table breakfast and lunch with local ingredients
• Starbucks (Multiple locations): The Seattle-born coffee company naturally has multiple locations throughout SEA

Travel Tips

• Arrive 2.5 hours before domestic flights and 3.5 hours for international — security at SEA can be lengthy, especially during Alaska Airlines' morning departure banks.
• The Link Light Rail is the single best transport option to downtown Seattle — reliable, frequent, and unaffected by I-5 traffic congestion.
• TSA PreCheck is available at multiple security checkpoints; CLEAR kiosks are located at the main and North security checkpoints.
• Seattle's famous rain and low clouds can cause arrival delays — build buffer time into connections during fall and winter months.
• The International Arrivals Facility (IAF) has significantly improved customs processing times — but immigration queues can still be long on late-evening arrivals from Asia.
• Parking at SEA fills quickly during summer and holiday periods — reserve online in advance through the airport's official parking reservation system.
• Seattle Coffee works (multiple locations) and local roasters throughout the terminal make SEA an outstanding airport for coffee connoisseurs.