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Cheap Flights to Seattle

Alaska's home turf vs. Delta's hub — Seattle fares stay sharp year-round

Flight Deals to Seattle

Seattle-Tacoma International (SEA) is unusual: it's both Alaska Airlines' home base and a major Delta hub, and the two carriers compete head-to-head on nearly every route. That rivalry drives down fares across the West Coast and on transcon flights, while Southwest and Alaska keep intra-West prices low. For travelers heading to the Pacific Northwest, the Alaska-Delta battle is a reliable source of deals.

Best Time to Fly to Seattle

October through March (the rainy off-season) offers the cheapest fares. Avoid the gorgeous but pricey summer months of June through August.

This Week's Picks

See What You're Missing

Real deals from this week - subscribers get these and more, every Friday.

£471 London to San Francisco + 14 more deals
🇬🇧From London

£471 London to San Francisco + 14 more deals

This week: direct flights to San Francisco from £471, Barcelona from £65, Singapore from £659, and Business Class deals unlocked for Premium members. Up to 56% below typical prices.

Oct 10
77% off San Francisco → Las Vegas ($38)$38
🇺🇸From San Francisco

77% off San Francisco → Las Vegas ($38)

OAK → Las Vegas for just $38 round-trip - 77% below the typical $164 median - plus SFO → Cancun for $335 (75% off) and SFO → Tokyo for $708.

Oct 9
77% off Los Angeles → Seattle ($38)$38
🇺🇸From Los Angeles

77% off Los Angeles → Seattle ($38)

LAX to Seattle for just $38 round-trip - 77% below the typical $165 median - plus Tokyo Narita for $663 (64% off) and Los Cabos for $340 (50% off) direct from LAX.

Oct 9

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Tips for Finding Cheap Flights to Seattle

Fly to Seattle From

🇺🇸Los Angeles→🇺🇸San Francisco→🇺🇸New York→🇺🇸Chicago→🇺🇸Denver→🇺🇸Dallas→🇺🇸Atlanta→🇺🇸Phoenix→

Other Popular Destinations

🎷Flights to New Orleans→⛱️Flights to Fort Lauderdale→🌅Flights to Tampa→🦞Flights to Boston→🎸Flights to Nashville→🌉Flights to San Francisco→

Frequently Asked Questions

When is the cheapest time to fly to Seattle?

October through March is the cheapest window, when Pacific Northwest rain suppresses tourism and roundtrip fares from California drop to $90-140. Summer (June-August) is the most beautiful season to visit but also the most expensive, with fares often doubling.

Which airlines have the cheapest Seattle flights?

Alaska Airlines, with its hub at SEA, runs frequent sales and competitive fares, while Delta's competing hub keeps prices honest on overlapping routes. Southwest is strong on West Coast hops. The Alaska-Delta rivalry makes Seattle one of the better-value PNW destinations.

How far ahead should I book Seattle flights?

For off-season travel, booking 1-2 months ahead is usually enough thanks to steady competition. Summer trips should be booked 2-4 months out, since peak demand from June through August pushes fares up quickly once cheap inventory sells through.

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