Earn point on your loyalty program!arrow arc left

Cheap flights from Seattle (BFI) to London (LCY)

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 London (LCY)

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

Cheap flights from Seattle to London in November , December 2025

26 Nov - 05 Dec $ 2,035.00
BFI
Seattle
Air Excursions
2 STOPS
LCY
London
LCY
London
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
26 Nov - 05 Dec $ 2,042.00
BFI
Seattle
Air Excursions
2 STOPS
LCY
London
LCY
London
Air Excursions
3 STOPS
BFI
Seattle
Pick dates
17 Nov - 05 Dec $ 2,079.00
BFI
Seattle
Air Excursions
2 STOPS
LCY
London
LCY
London
Air Excursions
3 STOPS
BFI
Seattle
Pick dates

One-way flights to London from Seattle

9:35 AM - 9:30 AM
KLM Royal Dutch Airlines
2 Stops
15h 55m
BFI - LCY
$ 927
Kiwi
Pick dates
9:35 AM - 9:25 AM
KLM Royal Dutch Airlines
2 Stops
15h 55m
BFI - LCY
$ 944
Kiwi
Pick dates
8:55 AM - 4:30 PM
KLM Royal Dutch Airlines
2 Stops
23h 40m
BFI - LCY
$ 944
Kiwi
Pick dates

How to find the cheapest flight from Seattle (BFI) to London (LCY)

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 London (LCY)
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 London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.