Cheap flights from Dallas to Northwest Washington

View AU$139 flight on Sun, 31 Aug. 2025Opens in a new window

Popular airlines from Dallas 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 Dallas (DFW) 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
Sat, 6 Sep. - Mon, 8 Sep.
DFW
Dallas
SEA
Seattle
AU$380 Return, found 3 days ago
AU$380
Return
found 3 days ago
Select Alaska Airlines flight, departing Sat, 6 Sep. from Dallas to Seattle, returning Mon, 8 Sep., priced at AU$380 found 3 days ago
Alaska Airlines
Sat, 6 Sep. - Mon, 8 Sep.
DFW
Dallas
SEA
Seattle
AU$395 Return, found 3 days ago
AU$395
Return
found 3 days ago
Select Alaska Airlines flight, departing Sat, 6 Sep. from Dallas to Seattle, returning Mon, 8 Sep., priced at AU$395 found 3 days ago
Alaska Airlines
Sat, 6 Sep. - Mon, 8 Sep.
DFW
Dallas
SEA
Seattle
AU$403 Return, found 3 days ago
AU$403
Return
found 3 days ago
Select Alaska Airlines flight, departing Sat, 6 Sep. from Dallas to Seattle, returning Mon, 8 Sep., priced at AU$403 found 3 days ago
Alaska Airlines
Wed, 6 Aug. - Tue, 19 Aug.
DFW
Dallas
SEA
Seattle
AU$404 Return, found 3 days ago
AU$404
Return
found 3 days ago
Select Alaska Airlines flight, departing Wed, 6 Aug. from Dallas to Seattle, returning Tue, 19 Aug., priced at AU$404 found 3 days ago
American Airlines
Sat, 6 Sep. - Mon, 8 Sep.
DFW
Dallas
SEA
Seattle
AU$426 Return, found 3 days ago
AU$426
Return
found 3 days ago
Select American Airlines flight, departing Sat, 6 Sep. from Dallas to Seattle, returning Mon, 8 Sep., priced at AU$426 found 3 days ago
Delta
Mon, 4 Aug. - Tue, 19 Aug.
DFW
Dallas
SEA
Seattle
AU$432 Return, found 3 days ago
AU$432
Return
found 3 days ago
Select Delta flight, departing Mon, 4 Aug. from Dallas to Seattle, returning Tue, 19 Aug., priced at AU$432 found 3 days ago

Find the cheapest month to fly from Dallas (DFW) to Bellingham (BLI)

September is typically the cheapest month to fly

From AU$402 - AU$1,185 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.