Seattle Airports Guide: Terminals, Transport, and Essential Information

The Seattle metropolitan area in the Pacific Northwest is served by one major international airport and two smaller commercial airports, each catering to different types of travel. While Seattle-Tacoma International Airport handles the vast majority of traffic, the region’s unique geography and airline strategies offer alternative gateways that can be more convenient for specific destinations or budgets.

This guide details the three commercial airports serving the greater Seattle area, including terminal layouts, ground transportation, and clear advice on which airport best suits your travel plans—whether you’re visiting downtown Seattle, the San Juan Islands, or the Olympic Peninsula.

Seattle-Tacoma International Airport (SEA)

Overview: Seattle-Tacoma International Airport, commonly called Sea-Tac, is the primary commercial airport for the Pacific Northwest and a major hub for Alaska Airlines and Delta Air Lines. Located approximately 14 miles (23 km) south of downtown Seattle and 18 miles (29 km) north of downtown Tacoma, it handles the overwhelming majority of international and domestic flights to the region. The airport has undergone significant modernization with the new International Arrivals Facility and North Satellite expansion.

Terminals:

• Main Terminal: Houses the check-in concourse (with four check-in halls), baggage claim, and the central security checkpoint.
• Concourse A (North Satellite): Recently renovated gates A1-A14, primarily used by Alaska Airlines and featuring premium lounges and local food vendors.
• Concourse B (Main Terminal): Gates B1-B19.
• Concourse C: Gates C2-C20.
• Concourse D: Gates D1-D11, serving many international and Delta flights, connected via the sterile International Arrivals Facility.
• Concourse N (North Satellite): Gates N1-N17, accessible via an underground train from the main terminal.
• Concourse S (South Satellite): Gates S1-S15, also accessible via the underground train.

All concourses are connected post-security via a central terminal and an underground automated people mover train system. The walk from the Main Terminal to the North or South Satellites is long; using the train is recommended.

Getting to and from SEA Airport:

• Link Light Rail (1 Line):
  The most affordable and efficient public transit to downtown Seattle. The SeaTac/Airport station is connected to the airport parking garage via a covered walkway. Trains run every 8-15 minutes to downtown stations (Westlake, University St., Pioneer Square) in about 35-40 minutes. It continues to the University of Washington and Northgate. Fare is $2.25-$3.25 depending on distance.
• Taxi / Ride-hailing (Uber, Lyft):
  Designated pickup areas are on the 3rd floor of the parking garage. Follow signs for “Rideshare/TNC.” A trip to downtown Seattle costs $45-65 and takes 25-45 minutes, heavily dependent on I-5 traffic.
• Shuttle Express & Other Shared Vans:
  Shared ride and private van services offer door-to-door service to Seattle, Tacoma, and surrounding areas. Can be cost-effective for groups or destinations not well-served by light rail.
• Car Rental:
  The Rental Car Facility is located off-site. A free, frequent shuttle bus (Green Loop) picks up passengers on the arrivals (baggage claim) level.
• Driving & Parking:
  The airport is accessible via I-5. Parking includes a General Parking garage, an Terminal Direct lot, and economical off-site private lots with shuttles. Rates are high; consider pre-booking.

Best for: All international travelers, most domestic flights, Alaska/Delta hub connections, and travelers heading to Seattle, Tacoma, or most points in the Puget Sound region.

King County International Airport (BFI) – Boeing Field

Overview: King County International Airport, commonly known as Boeing Field, is located just 5 miles (8 km) south of downtown Seattle. It is primarily a general aviation, cargo, and maintenance airport, but it also serves as the Seattle base for Alaska Airlines’ Boeing 737 pilot training and some limited VIP/charter operations. Importantly, it does not handle scheduled commercial passenger flights. Some luxury charters or private jets may use BFI for closer access to downtown.

Facilities:

• No commercial passenger terminal.
• Home to the Museum of Flight, a major aviation attraction with an excellent collection of aircraft.
• Used for aircraft delivery, testing, and heavy maintenance (including by Boeing).

Getting to and from BFI: Only relevant for private aviation; taxi or pre-arranged car service is required.

Best for: Private/charter aviation, aviation enthusiasts visiting the Museum of Flight, and aircraft industry-related travel.

Paine Field (PAE) – Snohomish County Airport

Overview: Paine Field, located in Everett about 25 miles (40 km) north of downtown Seattle, has emerged as a secondary commercial passenger airport. It is home to the Boeing Everett Factory (where 747, 767, 777, and 787 planes are assembled) and the Future of Flight Aviation Center. For passengers, it features a small, modern terminal operated by Alaska Airlines and United Airlines, offering flights to a select list of western U.S. hubs (Denver, Las Vegas, Phoenix, San Francisco, etc.). It provides a less crowded, more convenient alternative for travelers in northern Seattle suburbs or Snohomish County.

Terminals:

• Passenger Terminal (PAE): A single, compact terminal with two gates. The experience is streamlined, with security wait times typically under 10 minutes.

Getting to and from PAE Airport:

• Community Transit & Sound Transit Bus:
  Public bus routes (like Swift Green Line and ST 512) connect Paine Field to nearby transit centers and the Boeing Everett Factory. A trip to downtown Seattle requires a bus-to-bus transfer and takes 90+ minutes.
• Taxi / Ride-hailing:
  The most practical option for most. A trip to downtown Seattle takes 45-75 minutes and costs $75-110+ depending on traffic.
• Car Rental:
  Available from a few agencies on-site.

Best for: Travelers living in or visiting North Seattle, Snohomish County, or Everett; those seeking a quick, stress-free airport experience for flights to its limited list of destinations.

Which Seattle Airport Should You Choose?

Seattle-Tacoma International Airport (SEA) is the default and correct choice for >95% of travelers. It offers by far the most destinations, airlines, and convenient transit connections.

Paine Field (PAE) is a viable alternative only if:

• You live in or are staying in North Seattle, Lynnwood, Everett, or Marysville.
• Your destination is one of the western U.S. hubs served from PAE (check Alaska/United routes).
• You highly prioritize a fast, uncrowded check-in and security experience over flight options and cost.

Often, fares from PAE are higher than from SEA for the same route.

Boeing Field (BFI) is not an option for commercial airline passengers.

Rule of Thumb: For downtown Seattle visitors, SEA with the Link Light Rail is vastly superior. For those north of the city, compare flight options from SEA and PAE, factoring in the cost and time of getting to each airport.

Airport Transfers and Regional Transportation

To/From Downtown Seattle & Major Attractions:

• From SEA: Use the Link Light Rail. It stops at Westlake (for Pike Place Market, monorail to Seattle Center/Space Needle), University St. (for waterfront), and Stadium (for Lumen Field & T-Mobile Park).
• From PAE: Ride-hailing or taxi is the only realistic option for a direct trip.

To/From Cruise Terminals (Pier 66, Pier 91):

• From SEA: Take the Link Light Rail to Westlake Station, then a short taxi or rideshare to the pier. Many cruise lines offer direct shuttle buses from SEA (book in advance).
• Ride-hailing or pre-booked shuttle service from either airport is also straightforward.

To/From Vancouver, Canada (YVR):

• Train (Amtrak Cascades): Scenic and comfortable. Depart from Seattle’s King Street Station (reachable via Light Rail from SEA).
• BoltBus/FlixBus: Affordable coach service.
• Car: ~2.5-3 hour drive via I-5, subject to border wait times.
• Flight: Short but expensive; only makes sense as part of a longer connection.

To/From the San Juan Islands or Olympic Peninsula:

• From SEA: Rent a car and drive to Anacortes (for San Juan ferries) or to the Olympic Peninsula via the Tacoma Narrows Bridge.
• Kenmore Air: For the San Juans, consider a scenic seaplane flight from Lake Union or Lake Washington (reachable via taxi from SEA).

Transferring Between SEA and PAE:
This is a long and expensive transfer (50+ miles) that should be avoided. If absolutely necessary, allow 2+ hours for the journey by rental car or rideshare, which will cost $100+. There is no direct public transit link.

Practical Tips for Seattle Airports:

• SEA Spot Saver: Use this free, online reservation system to book a time slot for security screening at SEA. Highly recommended to bypass lines.
• Local Food at SEA: The airport has excellent local vendors, including Beecher’s Handmade Cheese, Ivar’s Seafood Bar, and Dilettante Chocolates.
• Portable Power: SEA has abundant charging stations and USB ports throughout the terminals.
• Weather Delays: Low clouds, rain, and occasional fog can cause arrival delays, especially in fall/winter. Build in buffer time for connections.
• Traffic: I-5 and I-405 are heavily congested during rush hours (6-9 AM, 3-7 PM). The Light Rail is immune to this.

Bottom line: For almost all travelers, Seattle-Tacoma International Airport (SEA) is the right choice. Use the efficient and affordable Link Light Rail to reach downtown. Only consider Paine Field (PAE) if you are in the northern suburbs and find a suitable, cost-effective flight. Always compare total travel time and cost, including ground transport to/from the airport.