New calculation
Flight distance & time
London Heathrow Airport → Seattle Tacoma International Airport
LHRSEA
- Distance
- 7,701 km · 4,785 mi
- Flight time
- 10h 22m
- CO₂ per passenger
- 693 kg
This London Heathrow Airport → Seattle Tacoma International 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: Seattle Tacoma International Airport → London Heathrow Airport
Advertisement
Your route
- FromLHRLondon Heathrow AirportLondon, England
- ToSEASeattle Tacoma International AirportSeattle, Washington
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
London Heathrow Airport to Seattle Tacoma International Airport FAQ
How far is London Heathrow Airport from Seattle Tacoma International Airport?
London Heathrow Airport (LHR) and Seattle Tacoma International Airport (SEA) are 7,701 km (4,785 mi) apart, measured along the great-circle route.
How long is the flight from London Heathrow Airport to Seattle Tacoma International Airport?
A direct LHR–SEA 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 London Heathrow Airport to Seattle Tacoma International Airport produce?
A passenger's share of CO₂ on the LHR–SEA route is roughly 693 kg.
Which airlines fly from London Heathrow Airport to Seattle Tacoma International Airport?
Alaska Airlines, British Airways, Delta Air Lines, Virgin Atlantic operate scheduled service between LHR and SEA.
Flight distance and time are estimates for ideal conditions — actual figures vary with aircraft type, routing and weather.
Advertisement