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 November , December 2025

22 Nov - 30 Dec $ 2,131.00
LCY
London
KLM Royal Dutch Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
KLM Royal Dutch Airlines
2 STOPS
LCY
London
Pick dates
27 Nov - 30 Dec $ 2,170.00
LCY
London
KLM Royal Dutch Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
KLM Royal Dutch Airlines
2 STOPS
LCY
London
Pick dates
21 Nov - 30 Dec $ 2,306.00
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

22 Nov - 01 Dec $ 2,208.00
LCY
London
KLM Royal Dutch Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
KLM Royal Dutch Airlines
2 STOPS
LCY
London
Pick dates
27 Nov - 01 Dec $ 2,246.00
LCY
London
KLM Royal Dutch Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
KLM Royal Dutch Airlines
2 STOPS
LCY
London
Pick dates
21 Nov - 01 Dec $ 2,383.00
LCY
London
KLM Royal Dutch Airlines
3 STOPS
BFI
Seattle
BFI
Seattle
KLM Royal Dutch Airlines
2 STOPS
LCY
London
Pick dates

One-way flights to Seattle from London

12:10 PM - 5:35 AM
Air Excursions
3 Stops
50h 15m
LCY - BFI
$ 1,265
Kiwi
Pick dates
9:15 AM - 6:45 PM
Air Excursions
3 Stops
42h 20m
LCY - BFI
$ 1,319
Kiwi
Pick dates
7:45 AM - 7:35 AM
Air Excursions
3 Stops
32h 40m
LCY - BFI
$ 1,440
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.