If you want to know how far it is between Seattle and London, the straight line distance is 4,799 miles
or 7,724 kilometers
If you are a pilot flying a private plane, you can fly straight from Seattle, WA to London, United Kingdom for a total flight time of 10 hours, 6 minutes
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If you're a traveler planning a trip and you want to book a commercial flight, you can try searching for flights between SEA and LHR.
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Seattle to London.