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Cheap flights from Toronto (YTO) to Seattle (BFI)

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How to find the cheapest flight from Toronto (YTO) to Seattle (BFI)

How to find the cheapest flight from Toronto (YTO) to Seattle (BFI)
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How to find the cheapest flight from Toronto (YTO) to Seattle (BFI)
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How to find the cheapest flight from Toronto (YTO) to Seattle (BFI)
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Cheap flights from Toronto to Seattle in May , June 2026

31 May - 29 Jun $ 826.00
YTO
Toronto
WestJet
2 STOPS
BFI
Seattle
BFI
Seattle
WestJet
2 STOPS
YTO
Toronto
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31 May - 25 Jun $ 842.00
YTO
Toronto
WestJet
3 STOPS
BFI
Seattle
BFI
Seattle
WestJet
2 STOPS
YTO
Toronto
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31 May - 25 Jun $ 848.00
YTO
Toronto
WestJet
2 STOPS
BFI
Seattle
BFI
Seattle
WestJet
2 STOPS
YTO
Toronto
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Last minute flights from Toronto to Seattle

27 May - 01 Jun $ 1,451.00
YTO
Toronto
Air Canada
2 STOPS
BFI
Seattle
BFI
Seattle
Air Canada
2 STOPS
YTO
Toronto
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28 May - 01 Jun $ 1,451.00
YTO
Toronto
Air Canada
2 STOPS
BFI
Seattle
BFI
Seattle
Air Canada
2 STOPS
YTO
Toronto
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26 May - 01 Jun $ 1,451.00
YTO
Toronto
Air Canada
2 STOPS
BFI
Seattle
BFI
Seattle
Air Canada
2 STOPS
YTO
Toronto
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One-way flights to Seattle from Toronto

10:20 PM - 6:45 PM
Air Excursions
3 Stops
24h 15m
YTO - BFI
$ 489
Kiwi
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10:25 PM - 6:45 PM
Air Excursions
2 Stops
24h 10m
YTO - BFI
$ 495
Kiwi
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10:25 PM - 4:05 PM
Air Excursions
2 Stops
21h 30m
YTO - BFI
$ 540
Kiwi
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How to find the cheapest flight from Toronto (YTO) to Seattle (BFI)

Related info for your journey
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How to find the cheapest flight from Toronto (YTO) to Seattle (BFI)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Toronto (YTO) to Seattle (BFI)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.