Earn point on your loyalty program!arrow arc left

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

How to find the cheapest flight from London (LCY) 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 London (LCY) 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 London (LCY) 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 London to Seattle in January , February 2026

29 Jan - 05 Feb $ 2,009.00
LCY
London
KLM Royal Dutch Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
KLM Royal Dutch Airlines
2 STOPS
LCY
London
Pick dates
29 Jan - 24 Feb $ 2,011.00
LCY
London
KLM Royal Dutch Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
KLM Royal Dutch Airlines
2 STOPS
LCY
London
Pick dates
29 Jan - 19 Feb $ 2,011.00
LCY
London
KLM Royal Dutch Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
KLM Royal Dutch Airlines
2 STOPS
LCY
London
Pick dates

Last minute flights from London to Seattle

29 Jan - 02 Feb $ 2,045.00
LCY
London
Vueling
3 STOPS
BFI
Seattle
BFI
Seattle
Vueling
3 STOPS
LCY
London
Pick dates
29 Jan - 02 Feb $ 2,052.00
LCY
London
Vueling
3 STOPS
BFI
Seattle
BFI
Seattle
Vueling
3 STOPS
LCY
London
Pick dates
22 Jan - 02 Feb $ 2,086.00
LCY
London
Vueling
3 STOPS
BFI
Seattle
BFI
Seattle
Vueling
3 STOPS
LCY
London
Pick dates

One-way flights to Seattle from London

6:50 AM - 2:45 PM
Air Excursions
3 Stops
40h 45m
LCY - BFI
$ 1,170
Kiwi
Pick dates
9:10 AM - 2:45 PM
Air Excursions
3 Stops
38h 25m
LCY - BFI
$ 1,178
Kiwi
Pick dates
9:10 AM - 2:45 PM
Air Excursions
3 Stops
38h 25m
LCY - BFI
$ 1,211
Kiwi
Pick dates

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