Earn point on your loyalty program!arrow arc left

Cheap flights from Washington (DCA) 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 Washington (DCA) to Seattle (BFI)

How to find the cheapest flight from Washington (DCA) 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 Washington (DCA) 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 Washington (DCA) 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 Washington to Seattle in November , December 2025

24 Nov - 12 Dec $ 1,142.00
DCA
Washington
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
DCA
Washington
Pick dates
24 Nov - 13 Dec $ 1,163.00
DCA
Washington
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
DCA
Washington
Pick dates
24 Nov - 15 Dec $ 1,178.00
DCA
Washington
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
2 STOPS
DCA
Washington
Pick dates

Last minute flights from Washington to Seattle

25 Nov - 02 Dec $ 1,109.00
DCA
Washington
Frontier Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
DCA
Washington
Pick dates
27 Nov - 02 Dec $ 1,126.00
DCA
Washington
Frontier Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
DCA
Washington
Pick dates
24 Nov - 02 Dec $ 1,206.00
DCA
Washington
Frontier Airlines
2 STOPS
BFI
Seattle
BFI
Seattle
Frontier Airlines
3 STOPS
DCA
Washington
Pick dates

One-way flights to Seattle from Washington

6:00 PM - 4:05 PM
Air Excursions
3 Stops
25h 55m
DCA - BFI
$ 660
Kiwi
Pick dates
6:00 PM - 4:05 PM
Air Excursions
3 Stops
25h 55m
DCA - BFI
$ 676
Kiwi
Pick dates
8:00 AM - 5:25 PM
Air Excursions
2 Stops
13h 15m
DCA - BFI
$ 749
Kiwi
Pick dates

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