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

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0 Children (2~11)
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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 March , April 2026

30 Mar - 01 May $ 1,581.00
BFI
Seattle
Air Excursions
3 STOPS
OPO
Porto
OPO
Porto
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
30 Mar - 20 Apr $ 1,659.00
BFI
Seattle
Air Excursions
3 STOPS
OPO
Porto
OPO
Porto
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
30 Mar - 01 May $ 1,691.00
BFI
Seattle
Air Excursions
3 STOPS
OPO
Porto
OPO
Porto
Air Excursions
3 STOPS
BFI
Seattle
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Last minute flights from Seattle to Porto

17 Mar - 02 Apr $ 2,132.00
BFI
Seattle
Air Excursions
3 STOPS
OPO
Porto
OPO
Porto
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
09 Mar - 02 Apr $ 2,264.00
BFI
Seattle
Air Excursions
3 STOPS
OPO
Porto
OPO
Porto
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
11 Mar - 02 Apr $ 2,266.00
BFI
Seattle
Air Excursions
3 STOPS
OPO
Porto
OPO
Porto
Air Excursions
3 STOPS
BFI
Seattle
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One-way flights to Porto from Seattle

9:35 AM - 6:45 AM
Norwegian Air Sweden
3 Stops
40h 20m
BFI - OPO
$ 695
Kiwi
Pick dates
9:35 AM - 8:45 PM
Air France
3 Stops
28h 25m
BFI - OPO
$ 804
Kiwi
Pick dates
9:35 AM - 5:40 PM
easyJet
3 Stops
26h 40m
BFI - OPO
$ 851
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.