Seattle → London flights
Seattle (BFI, SEA)→London (LCY, LGW, LHR, LTN, SEN, STN)
from$702
Last observed price · Last checked: 11 Aug 2026 · Price may change
Selected search
Last checked: 11 Aug 2026 · Price may change
$702
Sun 11 Oct 2026 → Sun 18 Oct 2026
Alaska Airlines2 stops7 nights
CheapestLast checked: 11 Aug 2026 · Price may change
$702 lowest$762 average12h 55m fastest
Tickets found in the last 7 days
The lowest fares our queries caught, cheapest first.
AA$702Cheapest11 Oct 2026 → 18 Oct 2026Alaska Airlines · 2 stops · 08:00Last checked: 11 Aug 2026 · Price may change7 nightsView ticket →
$71210 Oct 2026 → 20 Oct 2026Icelandair · 2 stops · 19:00Last checked: 11 Aug 2026 · Price may change10 nightsView ticket →$8714 Sep 2026 → 25 Sep 2026Icelandair · 2 stops · 23:25Last checked: 11 Aug 2026 · Price may change21 nightsView ticket →
$71210 Oct 2026 → 20 Oct 2026Icelandair · 2 stops · 19:00Last checked: 11 Aug 2026 · Price may change10 nightsView ticket →$8714 Sep 2026 → 25 Sep 2026Icelandair · 2 stops · 23:25Last checked: 11 Aug 2026 · Price may change21 nightsView ticket →Starting prices by month
The lowest fare our queries observed in each month. Open a month to see its days; click a day with no price and we will search it for you.
Observed priceLowest monthno price observedLast checked: 11 Aug 2026
Seattle → LondonSun 11 Oct 2026 · $702
Find flightsRoute facts
Direct flights
Non-stop
BFI - LCY, 12h 55m
Airlines seen
2
Alaska Airlines, Icelandair
Cheapest month
October 2026
$702
Average observed
$762
Typical duration
12h 55m
Alternative airports
6
SEA, LGW, LHR, LTN, SEN, STN
Frequently asked
Are there direct flights from Seattle to London?+−
Yes. We have seen non-stop flights on this route, flown by British Airways.
How much is a flight from Seattle to London?+−
The lowest fare we have observed is $702, found on 11 Aug 2026. Prices move, so read it as a floor rather than a quote.
Which airlines fly from Seattle to London?+−
These are the carriers we have seen on the route: Alaska Airlines, Icelandair.
When is the cheapest month to fly from Seattle to London?+−
In our observations October 2026 is the cheapest month so far, at $702.
Similar routes
Last checked: 11 Aug 2026