Earn point on your loyalty program!arrow arc left

Cheap flights from San Jose (SJC) to Seattle (BFI)

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 San Jose (SJC) to Seattle (BFI)

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

Cheap flights from San Jose to Seattle in April , May 2026

23 Apr - 04 May $ 917.00
SJC
San Jose
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SJC
San Jose
Pick dates
20 Apr - 04 May $ 925.00
SJC
San Jose
Frontier Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SJC
San Jose
Pick dates
23 Apr - 01 May $ 932.00
SJC
San Jose
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SJC
San Jose
Pick dates

Last minute flights from San Jose to Seattle

23 Apr - 01 May $ 932.00
SJC
San Jose
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SJC
San Jose
Pick dates
20 Apr - 01 May $ 939.00
SJC
San Jose
Frontier Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SJC
San Jose
Pick dates
26 Apr - 01 May $ 973.00
SJC
San Jose
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SJC
San Jose
Pick dates

One-way flights to Seattle from San Jose

7:07 PM - 4:05 PM
Air Excursions
2 Stops
21h 48m
SJC - BFI
$ 480
Kiwi
Pick dates
8:22 PM - 4:05 PM
Air Excursions
3 Stops
20h 33m
SJC - BFI
$ 487
Kiwi
Pick dates
8:22 PM - 4:05 PM
Air Excursions
2 Stops
20h 33m
SJC - BFI
$ 521
Kiwi
Pick dates

How to find the cheapest flight from San Jose (SJC) to Seattle (BFI)

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 San Jose (SJC) 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 San Jose (SJC) to Seattle (BFI)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.