Cheap flights from Seattle (SEA)

Pacific Northwest gateway between Seattle and Tacoma

Seattle-Tacoma International sits about 14 miles south of downtown Seattle and 17 miles north of Tacoma, Washington. It is the largest hub for Alaska Airlines and a major hub for Delta. Major carriers include American, United, Southwest, JetBlue, and a deep international roster (Lufthansa, ANA, Korean Air, Singapore, Emirates seasonally). Routes span every US hub plus Asia and Europe nonstops.

Why search this airport on Flightmussy

Airlines flying from Seattle (SEA)

Major carriers: Alaska Airlines, Delta Air Lines, American Airlines, United Airlines, Southwest Airlines. Low-cost carriers: Southwest Airlines, Spirit Airlines, Frontier Airlines, JetBlue Airways.

Popular destinations from Seattle (SEA)

Frequently asked questions

Which airlines fly the most international routes from Seattle?
Alaska, Delta, ANA, Korean Air, Lufthansa, British Airways, Air France, and Singapore all operate scheduled long-haul service from SEA. The airport is a Star Alliance and SkyTeam stronghold simultaneously. Flightmussy's 12-month fare heatmap compares carriers across the same dates so you can spot weekly price gaps instantly.
How far is Sea-Tac from downtown Seattle?
SEA is about 14 miles (23 km) south of downtown Seattle. The Link light rail connects the airport to downtown in roughly 40 minutes for a flat fare, and rideshare typically takes 25-35 minutes outside rush hour. Flightmussy displays arrival times to help you plan onward connections.
When is the cheapest time to fly from Seattle to Asia?
Mid-January through early March and the first half of September tend to deliver the lowest SEA-ICN, SEA-NRT, and SEA-HND fares, avoiding cherry-blossom and summer peaks. Flightmussy's 12-month fare heatmap shows the full annual price curve so you can pick the dip without subscribing.
Are there direct flights from Seattle to London?
Yes. British Airways and Delta both operate nonstop service between SEA and LHR, with Virgin Atlantic operating in past seasons. Frequencies vary by season. Flightmussy's direct-flight filter pulls the SEA-LHR nonstops out of the noise and overlays them on the 12-month heatmap to show when fares drop.

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Flightmussy is a free flight meta-search built by one person in Oslo. No signup, no ads, no tracking, no email capture. Compare fares across airlines and see 12 months of prices at a glance — including low-cost carriers Google Flights often deprioritises (Widerøe, Wizz Air, Norwegian, Ryanair). Pay with a card at the airline, or use the Crypto button on any result to check out in BTC, ETH, USDT, BNB or AVA via Travala.

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