SEA · Seattle–Tacoma International Airport

Overview

Seattle–Tacoma International Airport (SEA) is the principal commercial airport serving Seattle, Washington, and the surrounding Pacific Northwest region. Ranked number 8 on the most recent list of the busiest airports in the United States, it handled approximately 50.9M passengers in its last reported year, placing it firmly among the country's most consequential aviation gateways. The airfield operates 3 active runways and presents travelers with 1 passenger terminal, organized into a layout that has been refined across decades of capital improvement programs and changing carrier strategies.

For most arriving travelers, the first impression of Seattle is shaped here. The airport functions as a hub for Alaska Airlines and Delta Air Lines, which means a substantial share of the traffic on the field consists of connecting passengers who never leave the secure side of the building. That dynamic affects everything from how the concourses are laid out to how long the security lines run during the morning and late-afternoon banks. Understanding which airline you are flying and which terminal it uses is the single most useful piece of information for navigating SEA smoothly, because the journey between terminals can range from a short walk to a dedicated train ride depending on the configuration.

Beyond raw passenger counts, Seattle–Tacoma International Airport plays an outsized role in the local economy. Tens of thousands of jobs — from ramp agents and TSA officers to chefs, retail workers, and corporate aviation staff — are tied directly to operations on the field, and the surrounding cargo, logistics, and hospitality industries that orbit the airport employ many thousands more. Concession programs have also shifted in recent years toward locally owned restaurants and regional brands, so the food and shopping you encounter inside the terminals are increasingly an extension of the Seattle dining and retail scene rather than the generic chain-store airport experience of an earlier era.

This guide is organized into focused sections so that you can jump straight to the information you need. The terminals page walks through each building and concourse, including which airlines operate where and how to move between them. The airlines page lists the major carriers that serve SEA along with their typical destinations. The parking page explains the on-site garages, economy lots, cell phone waiting areas, and off-site alternatives. The ground transportation page covers rideshare pickup zones, taxis, public transit, rental cars, and shuttle options. The amenities page surveys lounges, dining, shopping, family services, and accessibility features. Each page is written for first-time visitors and frequent flyers alike, with the expectation that you will check official airport sources for last-minute construction notices and operational changes.

Background: Seattle–Tacoma International Airport[a] (IATA: SEA, ICAO: KSEA, FAA LID: SEA) is the primary international airport serving Seattle and its surrounding metropolitan area in the U.S. state of Washington. It is in the city of SeaTac, which was named after the airport's nickname Sea–Tac, approximately 14 miles (23 km) south of downtown Seattle and 18 miles (29 km) north-northeast of downtown Tacoma.[3] The airport is the busiest in the Pacific Northwest region of North America and is owned by the Port of Seattle.