Earn point on your loyalty program!arrow arc left

Cheap flights from Seattle (BFI) to Basel (BSL)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Seattle (BFI) to Basel (BSL)

How to find the cheapest flight from Seattle (BFI) to Basel (BSL)
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 Basel (BSL)
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 Basel (BSL)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Seattle to Basel in November , December 2025

29 Nov - 13 Dec $ 2,009.00
BFI
Seattle
Air Excursions
3 STOPS
BSL
Basel
BSL
Basel
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
29 Nov - 18 Dec $ 2,122.00
BFI
Seattle
Air Excursions
3 STOPS
BSL
Basel
BSL
Basel
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
29 Nov - 11 Dec $ 2,138.00
BFI
Seattle
Air Excursions
3 STOPS
BSL
Basel
BSL
Basel
Air Excursions
3 STOPS
BFI
Seattle
Pick dates

Last minute flights from Seattle to Basel

24 Nov - 02 Dec $ 2,394.00
BFI
Seattle
Air Excursions
3 STOPS
BSL
Basel
BSL
Basel
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
29 Nov - 02 Dec $ 2,408.00
BFI
Seattle
Air Excursions
3 STOPS
BSL
Basel
BSL
Basel
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
29 Nov - 02 Dec $ 2,416.00
BFI
Seattle
Air Excursions
3 STOPS
BSL
Basel
BSL
Basel
Air Excursions
3 STOPS
BFI
Seattle
Pick dates

One-way flights to Basel from Seattle

9:35 AM - 9:05 PM
easyJet
3 Stops
27h 55m
BFI - BSL
$ 923
Kiwi
Pick dates
9:35 AM - 6:05 PM
easyJet
3 Stops
26h 5m
BFI - BSL
$ 937
Kiwi
Pick dates
11:35 AM - 2:10 PM
easyJet
3 Stops
20h 15m
BFI - BSL
$ 976
Kiwi
Pick dates

How to find the cheapest flight from Seattle (BFI) to Basel (BSL)

Related info for your journey
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 Basel (BSL)
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 Basel (BSL)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.