Distance between Seattle, WA (SEA) and London (LHR)
Distance from Seattle to London (Seattle–Tacoma International Airport – Heathrow Airport) is 4800 miles / 7725 kilometers / 4171 nautical miles.
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Seattle - London
How far is London from Seattle?
There are several ways to calculate distances between Seattle and London. Here are two common methods:
Vincenty's formula (applied above)- 4800.220 miles
- 7725.205 kilometers
- 4171.277 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.
Haversine formula- 4785.859 miles
- 7702.094 kilometers
- 4158.798 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).
Flight duration
Estimated flight time from Seattle–Tacoma International Airport (SEA) to Heathrow Airport (LHR) is 9 hours 35 minutes.
Time difference and current local times
The time difference between Seattle and London is 8 hours. London is 8 hours ahead of Seattle.
Time Difference
Seattle, WA
London
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 565 kg (1 246 pounds).
Airport information
| A | Seattle–Tacoma International Airport |
|---|---|
| City: | Seattle, WA |
| Country: | United States  |
| IATA Code: | SEA |
| ICAO Code: | KSEA |
| Coordinates: | 47°26′56″N, 122°18′32″W |
| B | Heathrow Airport |
|---|---|
| City: | London |
| Country: | United Kingdom  |
| IATA Code: | LHR |
| ICAO Code: | EGLL |
| Coordinates: | 51°28′14″N, 0°27′42″W |
Map
Seattle to London flight map.
Frequent Flyer Miles Calculator
Seattle (SEA) → London (LHR).
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