What is the airport code for Seattle-Tacoma International Airport?
Posted on Mar 25, 2026 / Travel
The airport code for Seattle-Tacoma International Airport is SEA, and you’ll see it on all tickets and flight searches. A lot of people still call the airport “Sea-Tac,” but SEA is the official code used by airlines. It’s one of the busiest airports on the West Coast, so the code shows up often if you’re flying in the U.S. or internationally. The code is based on the city name Seattle, which makes it easy to remember. When booking flights, using SEA helps you find the right airport quickly. It’s also what you’ll see on baggage tags and boarding passes. Knowing the code just makes travel smoother and avoids confusion.
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