Cheap flights from Seattle to London
From 580 USD — compare hundreds of airlines
Direct flightsCheapest: 2026-07 · 281 US$
Prices by date
348 US$
10/07
315 US$
11/07
315 US$
12/07
315 US$
13/07
315 US$
14/07
281 US$
15/07
300 US$
16/07
300 US$
17/07
300 US$
18/07
300 US$
19/07
300 US$
20/07
300 US$
21/07
Airlines on this route
FAQ
What's the cheapest month to fly Seattle to London?
Usually 2026-07, from 281 USD.
Are there direct flights from Seattle to London?
We show both direct and connecting options — filter to compare.