Cheap flights from Toronto to Northwest Washington

View AU$236 flight on Wed, 10 Sep. 2025Opens in a new window

Popular airlines from Toronto 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 Toronto (YTO) 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.

Air Canada
Sat, 30 Aug. - Fri, 5 Sep.
YYZ
Toronto
SEA
Seattle
AU$403 Return, found 6 days ago
AU$403
Return
found 6 days ago
Select Air Canada flight, departing Sat, 30 Aug. from Toronto to Seattle, returning Fri, 5 Sep., priced at AU$403 found 6 days ago
Air Canada
Sat, 30 Aug. - Fri, 5 Sep.
YYZ
Toronto
SEA
Seattle
AU$415 Return, found 6 days ago
AU$415
Return
found 6 days ago
Select Air Canada flight, departing Sat, 30 Aug. from Toronto to Seattle, returning Fri, 5 Sep., priced at AU$415 found 6 days ago
United
Sat, 30 Aug. - Fri, 5 Sep.
YYZ
Toronto
SEA
Seattle
AU$417 Return, found 6 days ago
AU$417
Return
found 6 days ago
Select United flight, departing Sat, 30 Aug. from Toronto to Seattle, returning Fri, 5 Sep., priced at AU$417 found 6 days ago
WestJet
Sat, 30 Aug. - Fri, 5 Sep.
YYZ
Toronto
SEA
Seattle
AU$436 Return, found 6 days ago
AU$436
Return
found 6 days ago
Select WestJet flight, departing Sat, 30 Aug. from Toronto to Seattle, returning Fri, 5 Sep., priced at AU$436 found 6 days ago
Alaska Airlines
Thu, 13 Nov. - Sat, 15 Nov.
YYZ
Toronto
SEA
Seattle
AU$438 Return, found 3 days ago
AU$438
Return
found 3 days ago
Select Alaska Airlines flight, departing Thu, 13 Nov. from Toronto to Seattle, returning Sat, 15 Nov., priced at AU$438 found 3 days ago
Delta
Sat, 30 Aug. - Fri, 5 Sep.
YYZ
Toronto
SEA
Seattle
AU$443 Return, found 6 days ago
AU$443
Return
found 6 days ago
Select Delta flight, departing Sat, 30 Aug. from Toronto to Seattle, returning Fri, 5 Sep., priced at AU$443 found 6 days ago
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