How long is the flight from London to Seattle?

Direct flights from London to Seattle typically take around 9h 33m. The great-circle distance is approximately 7,701 km.

What is the cheapest day to fly from London to Seattle?

As a general industry pattern, mid-week flights (Tuesday and Wednesday) tend to be cheaper — see the cheapest-day page for real fare data on this route where available.

Which airlines fly from London to Seattle?

Use our flight search above to see live availability and compare prices across airlines flying London to Seattle.

How far in advance should I book a flight from London to Seattle?

For the best fares, aim to book 4–8 weeks ahead during peak season and 2–4 weeks during off-peak periods. Last-minute deals can sometimes appear within 14 days of departure.

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Direct Flights: London to Seattle

9h 33m

Flight time

7,701 km

Distance

Airport pairs

Find non-stop flights from London to Seattle — no layovers, no connections. The route covers 7,701 km with a typical flight time of 9h 33m. Seattle is located in United States.

Direct airport connections

LHR

London Heathrow Airport

→

SEA