Cheap flights from San José to Northwest Washington

View AU$360 flight on Fri, 30 Jan. 2026Opens in a new window

Popular airlines from San José to Northwest Washington

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from San José (SJO) to Northwest Washington (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, 1 Sep. - Mon, 8 Sep.
SJO
San José
SEA
Seattle
AU$802 Return, found 6 days ago
AU$802
Return
found 6 days ago
Select United flight, departing Mon, 1 Sep. from San José to Seattle, returning Mon, 8 Sep., priced at AU$802 found 6 days ago
American Airlines
Mon, 1 Sep. - Mon, 8 Sep.
SJO
San José
SEA
Seattle
AU$822 Return, found 6 days ago
AU$822
Return
found 6 days ago
Select American Airlines flight, departing Mon, 1 Sep. from San José to Seattle, returning Mon, 8 Sep., priced at AU$822 found 6 days ago
avianca
Mon, 1 Sep. - Mon, 8 Sep.
SJO
San José
SEA
Seattle
AU$1,858 Return, found 6 days ago
AU$1,858
Return
found 6 days ago
Select avianca flight, departing Mon, 1 Sep. from San José to Seattle, returning Mon, 8 Sep., priced at AU$1,858 found 6 days ago
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