LHR → SEA
Cheap flights from London to Seattle
We track fares from London to Seattle, United States every day. Across 72 prices we've logged, the cheapest was €368 return and a typical fare runs around €566. The cheapest month to fly is usually Sept 2026.
Cheapest seen
€368
Typical price
€566
Cheapest month
Sept 2026
Non-stop
With a stop
No live deal on this exact route right now — but the typical fare is around €566. Search your dates below, or browse all deals to United States.
Cheapest months to fly
The typical cheapest fare by month, from our tracking — a guide only. Check the live price on Aviasales before booking.
| Month | Typical from | Check price |
|---|---|---|
| Sept 2026 | €368 | Check on Aviasales → |
| Oct 2026 | €496 | Check on Aviasales → |
Each link opens the live Aviasales search for that month, where you can pick the exact cheapest dates.
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London to Seattle: the basics
- Route
- London (LHR) → Seattle (SEA)
- Distance
- 7,702 km
- Non-stop
- No (with a stop)
- Airlines seen
- American Airlines, EI, FI, United Airlines
Planning the trip? United States: what to see and when to go covers where to go and when.
Where these flights connect
There is no non-stop flight from London to Seattle. Based on the airlines that fly this route, connections are usually through New York — worth checking when you compare fares.