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Cheap flights to Seattle

Round trips from 15 cities to Seattle, United States, from $122. Economy, per person, in USD.

Prices updated

Cheapest right now $122 from San Diego · Dec 12 – 15 Book this fare
Cheapest month December From $122 (San Diego)
Departure cities 15 7 are below the usual price
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Flights to Seattle by departure city

Cheapest round trip, per person

Cheapest month to fly to Seattle

Lowest round trip per departure month, any of our cities
Cheapest round trip to Seattle by departure month
MonthCheapest round trip
November 2026$259 from Las Vegas
December 2026$122 from San Diego (cheapest month)
January 2027$183 from San Francisco
February 2027$145 from Denver
March 2027No fares found yet
April 2027$254 from Los Angeles
May 2027$357 from San Jose
June 2027$240 from Los Angeles

Cheapest dates to Seattle

Best date pair from each city
  • Dec 12 – 15 from San Diego · 3 nights
    $122
    Southwest Airlines Nonstop
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  • Dec 5 – 8 from Los Angeles · 3 nights
    $143
    Alaska Airlines Nonstop
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  • Feb 14 – 16, 2027 from Denver · 2 nights
    $145
    Southwest Airlines 1 stop
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  • Dec 15 – 24 from San Jose · 9 nights
    $156
    Southwest Airlines Nonstop
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  • Dec 8 – 10 from Oakland · 2 nights
    $167
    Alaska Airlines Nonstop
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  • Dec 8 – 10 from San Francisco · 2 nights
    $167
    Alaska Airlines Nonstop
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  • Dec 8 – 10 from Ontario · 2 nights
    $176
    Frontier Airlines 1 stop
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  • Nov 19 – 22 from Las Vegas · 3 nights
    $259
    Frontier Airlines Nonstop
    Book

Prices change often. The booking site shows the final price before you pay.

Things to do in Seattle

Tickets and tours on Klook
See things to do in Seattle Attractions, tours and airport transfers on Klook

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Airport transfer to Seattle

Fixed prices from SEA on Kiwitaxi

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Flights to Seattle: questions

Which city has the cheapest flights to Seattle?

Right now it's San Diego: round trips from $122 (Dec 12 – 15, nonstop). Next cheapest: Los Angeles from $143 and Denver from $145. We compare 15 departure cities.

What is the cheapest month to fly to Seattle?

December 2026: the cheapest round trip we have found departing that month is $122. The most expensive month in our data is May, where the cheapest round trip is $357. Based on the 7 months ahead we track.

Are there nonstop flights to Seattle?

Yes. We have found nonstop round trips from San Diego, Los Angeles, San Jose and Oakland. The cheapest is $122 from San Diego.

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About these prices

We track round-trip economy fares to Seattle (United States) from the cities listed above using Travelpayouts / Aviasales data, and refresh every route about once a day. The cheapest round trip we've found is $122 from San Diego. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.

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