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Cheap flights from Seattle (BFI) to Porto (OPO)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from Seattle (BFI) to Porto (OPO)

How to find the cheapest flight from Seattle (BFI) to Porto (OPO)
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How to find the cheapest flight from Seattle (BFI) to Porto (OPO)
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How to find the cheapest flight from Seattle (BFI) to Porto (OPO)
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Cheap flights from Seattle to Porto in June , July 2026

30 Jun - 22 Jul $ 2,136.00
BFI
Seattle
Air Excursions
2 STOPS
OPO
Porto
OPO
Porto
Air Excursions
3 STOPS
BFI
Seattle
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30 Jun - 22 Jul $ 2,142.00
BFI
Seattle
Air Excursions
2 STOPS
OPO
Porto
OPO
Porto
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
30 Jun - 24 Jul $ 2,151.00
BFI
Seattle
Air Excursions
2 STOPS
OPO
Porto
OPO
Porto
Air Excursions
3 STOPS
BFI
Seattle
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One-way flights to Porto from Seattle

8:05 PM - 6:15 AM
SAS
3 Stops
52h 40m
BFI - OPO
$ 1,145
Kiwi
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8:05 AM - 4:55 PM
Norwegian Air Shuttle
3 Stops
27h 35m
BFI - OPO
$ 1,287
Kiwi
Pick dates
8:05 AM - 9:10 AM
KLM Royal Dutch Airlines
2 Stops
18h 50m
BFI - OPO
$ 1,344
Kiwi
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How to find the cheapest flight from Seattle (BFI) to Porto (OPO)

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