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Flight distance & time
Seattle Tacoma International Airport → London Heathrow Airport
SEALHR
- Distance
- 7,701 km · 4,785 mi
- Flight time
- 10h 22m
- CO₂ per passenger
- 693 kg
This Seattle Tacoma International Airport → London Heathrow Airport route is 7,701 km (4,785 mi) end to end. The estimated flight time is 10h 22m, and a passenger's share of CO₂ works out at roughly 693 kg.
See the reverse route: London Heathrow Airport → Seattle Tacoma International Airport
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Your route
- FromSEASeattle Tacoma International AirportSeattle, Washington
- ToLHRLondon Heathrow AirportLondon, England
Flight map
Track your lifetime distance flown across every trip.
Route service
Average daily flights~6 flights/day
Airlines on this route
Alaska AirlinesBritish AirwaysDelta Air LinesVirgin Atlantic
Common questions
Seattle Tacoma International Airport to London Heathrow Airport FAQ
How far is Seattle Tacoma International Airport from London Heathrow Airport?
Seattle Tacoma International Airport (SEA) and London Heathrow Airport (LHR) are 7,701 km (4,785 mi) apart, measured along the great-circle route.
How long is the flight from Seattle Tacoma International Airport to London Heathrow Airport?
A direct SEA–LHR flight covers the distance in about 10h 22m, though the exact time shifts with aircraft type and winds.
How much CO₂ does a flight from Seattle Tacoma International Airport to London Heathrow Airport produce?
A passenger's share of CO₂ on the SEA–LHR route is roughly 693 kg.
Which airlines fly from Seattle Tacoma International Airport to London Heathrow Airport?
Alaska Airlines, British Airways, Delta Air Lines, Virgin Atlantic operate scheduled service between SEA and LHR.
Flight distance and time are estimates for ideal conditions — actual figures vary with aircraft type, routing and weather.
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