Earn point on your loyalty program!arrow arc left

Cheap flights from San Diego (SAN) 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 Diego (SAN) to Seattle (BFI)

How to find the cheapest flight from San Diego (SAN) 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 Diego (SAN) 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 Diego (SAN) 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 Diego to Seattle in November , December 2025

23 Nov - 12 Dec $ 786.00
SAN
San Diego
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SAN
San Diego
Pick dates
23 Nov - 11 Dec $ 786.00
SAN
San Diego
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SAN
San Diego
Pick dates
23 Nov - 18 Dec $ 843.00
SAN
San Diego
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SAN
San Diego
Pick dates

Last minute flights from San Diego to Seattle

23 Nov - 01 Dec $ 968.00
SAN
San Diego
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SAN
San Diego
Pick dates
23 Nov - 01 Dec $ 1,022.00
SAN
San Diego
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
SAN
San Diego
Pick dates
23 Nov - 01 Dec $ 1,025.00
SAN
San Diego
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
SAN
San Diego
Pick dates

One-way flights to Seattle from San Diego

8:34 AM - 2:45 PM
Air Excursions
2 Stops
31h 1m
SAN - BFI
$ 405
Kiwi
Pick dates
3:49 PM - 4:05 PM
Air Excursions
2 Stops
25h 6m
SAN - BFI
$ 530
Kiwi
Pick dates
6:36 AM - 5:25 PM
Air Excursions
2 Stops
11h 39m
SAN - BFI
$ 656
Kiwi
Pick dates

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