Cheap flights from Phoenix to Northwest Washington

View AU$73 flight on Thu, 2 Oct. 2025Opens in a new window

Popular airlines from Phoenix 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 Phoenix (PHX) 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.

Alaska Airlines
Mon, 4 Aug. - Wed, 20 Aug.
PHX
Phoenix
SEA
Seattle
AU$145 Return, found 11 hours ago
AU$145
Return
found 11 hours ago
Select Alaska Airlines flight, departing Mon, 4 Aug. from Phoenix to Seattle, returning Wed, 20 Aug., priced at AU$145 found 11 hours ago
Delta
Mon, 4 Aug. - Wed, 20 Aug.
PHX
Phoenix
SEA
Seattle
AU$149 Return, found 11 hours ago
AU$149
Return
found 11 hours ago
Select Delta flight, departing Mon, 4 Aug. from Phoenix to Seattle, returning Wed, 20 Aug., priced at AU$149 found 11 hours ago
Delta
Mon, 4 Aug. - Wed, 20 Aug.
PHX
Phoenix
SEA
Seattle
AU$150 Return, found 11 hours ago
AU$150
Return
found 11 hours ago
Select Delta flight, departing Mon, 4 Aug. from Phoenix to Seattle, returning Wed, 20 Aug., priced at AU$150 found 11 hours ago
Alaska Airlines
Mon, 4 Aug. - Wed, 20 Aug.
PHX
Phoenix
SEA
Seattle
AU$169 Return, found 11 hours ago
AU$169
Return
found 11 hours ago
Select Alaska Airlines flight, departing Mon, 4 Aug. from Phoenix to Seattle, returning Wed, 20 Aug., priced at AU$169 found 11 hours ago
Alaska Airlines
Mon, 4 Aug. - Wed, 20 Aug.
PHX
Phoenix
SEA
Seattle
AU$171 Return, found 11 hours ago
AU$171
Return
found 11 hours ago
Select Alaska Airlines flight, departing Mon, 4 Aug. from Phoenix to Seattle, returning Wed, 20 Aug., priced at AU$171 found 11 hours ago
United
Fri, 22 Aug. - Fri, 29 Aug.
PHX
Phoenix
SEA
Seattle
AU$455 Return, found 4 hours ago
AU$455
Return
found 4 hours ago
Select United flight, departing Fri, 22 Aug. from Phoenix to Seattle, returning Fri, 29 Aug., priced at AU$455 found 4 hours ago

Find the cheapest month to fly from Phoenix (PHX) to Bellingham (BLI)

January is typically the cheapest month to fly

From AU$278 - AU$836 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.