flight_takeoff SEA → LHR

Cheap Flights from Seattle to London

Compare fares from Seattle (SEA) to London (LHR) across hundreds of airlines. The route covers about 4,786 miles with a typical nonstop time of ~10h 5m.

straighten

Distance

4,786 mi

7,702 km

schedule

Est. flight time

10h 5m

nonstop

flight

Nonstop service

Available

8 carriers

language

Time difference

8 hours ahead

London

Flying from Seattle to London

The journey from Seattle (SEA) to London (LHR) spans roughly 4,786 miles (7,702 km), a nonstop flight of about 10h 5m. On arrival, London is 8 hours ahead Seattle. Lets Fly Travel compares live fares across hundreds of airlines so you can find the best deal — and every booking is reviewed by a real travel agent.

Airlines on this route

Carriers that have operated nonstop service between SEA and LHR include:

flightAir France flightAmerican Airlines flightBritish Airways flightDelta Air Lines flightFinnair flightIberia Airlines flightKLM Royal Dutch Airlines flightVirgin Atlantic Airways

Airline availability changes over time — search your dates for current operators and fares.

Seattle to London — FAQs

How long is the flight from Seattle to London? expand_more
A nonstop flight from Seattle (SEA) to London (LHR) takes approximately 10h 5m, covering a distance of about 4786 miles (7702 km). Actual flight time varies with aircraft, routing and winds.
Which airlines fly from Seattle to London? expand_more
Airlines that have operated nonstop service on the SEA–LHR route include Air France, American Airlines, British Airways, Delta Air Lines, Finnair, Iberia Airlines, KLM Royal Dutch Airlines, Virgin Atlantic Airways. Use our search to compare current carriers, schedules and fares.
Is there a nonstop flight from Seattle to London? expand_more
Yes. The SEA–LHR route has nonstop service. Nonstop availability can vary by season and day of week, so check live results for your dates.
How far is London from Seattle? expand_more
The distance from Seattle (SEA) to London (LHR) is about 4786 miles (7702 km) as the crow flies.
What is the time difference between Seattle and London? expand_more
London is 8 hours ahead Seattle. Factor the time change into your arrival and connection planning.
When is the best time to book flights from Seattle to London? expand_more
For international trips like Seattle to London, booking roughly 2–6 months ahead and flying mid-week (Tuesday/Wednesday) tends to surface the lowest fares. Set up a search early and compare a few date options.

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