Cheap flights from London to Seattle
From 701 USD — compare hundreds of airlines
About this route
Compare flights from London to Seattle, a about 7,707 km route (around 10h 8m nonstop). We gather live prices from hundreds of airlines and agencies so you can find the cheapest and book on the official site, with no hidden fees. Direct flights are available. Airlines such as American Airlines, British Airways, Iberia operate this route.
Prices by date
Airlines on this route
FAQ
What's the cheapest month to fly London to Seattle?
It's usually 2026-08, from 580 USD. Use the price calendar to compare other dates.
How long is the flight from London to Seattle?
A nonstop flight takes about 10h 8m and covers around 7,707 km. Connecting itineraries take longer.
Are there direct flights from London to Seattle?
Yes, this route has nonstop flights. Filter by "nonstop" to see them.
Which airlines fly from London to Seattle?
American Airlines, British Airways, Iberia operate this route, among others. Compare them all in the results.
When should I book London–Seattle flights?
As a rule of thumb, booking 3–8 weeks ahead and avoiding weekends and holidays tends to give the best prices. Use the calendar to spot the cheapest dates.