Question 1

How long is the flight from Seattle to London?

Accepted Answer

The flight from Seattle–Tacoma International Airport (SEA) to London Heathrow Airport (LHR) covers 7,702 km and takes approximately 9h 3m. Actual duration varies by airline, routing, and wind conditions — check individual flight listings for scheduled times.

Question 2

Which airlines fly from Seattle to London?

Accepted Answer

There are 8 airlines operating the SEA–LHR route. Use the TrackMyWings app to compare schedules, prices, and on-time performance across all carriers on this route.

Question 3

What is the best airline from Seattle to London?

Accepted Answer

The best airline on the SEA–LHR route depends on your priorities — price, on-time performance, cabin experience, or loyalty miles. TrackMyWings tracks real-time on-time data for all 8 carriers on this route so you can make an informed choice.

Question 4

How often do flights operate from Seattle to London?

Accepted Answer

The SEA–LHR route is served by 8 airlines, with combined daily frequency varying by season. Check the TrackMyWings schedule view for live departure listings and to find the next available flight from Seattle to London.

Flight	Airline	Dep Time	Arr Time	Status
AA 210	American Airlines	08:00	14:00	Scheduled
AF 3105	Air France	08:00	14:00	Scheduled

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Seattle (SEA) to London (LHR) Flights

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