Distance between Seattle, WA (SEA) and London (LHR)
Flight distance from Seattle to London (Seattle–Tacoma International Airport – London Heathrow Airport) is 4800 miles / 7725 kilometers / 4171 nautical miles. Estimated flight time is 9 hours 35 minutes.
Seattle – London
How far is London from Seattle?
There are several ways to calculate distances between Los Angeles and Chicago. 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 to London Heathrow Airport is 9 hours 35 minutes.
Time difference
The time difference between Seattle and London is 8 hours. London is 8 hours ahead of Seattle.
Seattle time to London time converter
Carbon dioxide emissions
On average flying from Seattle to London generates about 558 kg of CO2 per passenger, 558 kilograms is equal to 1 230 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path from Seattle to London
Shortest flight path between Seattle–Tacoma International Airport (SEA) and London Heathrow Airport (LHR).
Airport information
| Origin | 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 |
| Destination | London Heathrow Airport |
|---|---|
| City: | London |
| Country: | United Kingdom  |
| IATA Code: | LHR |
| ICAO Code: | EGLL |
| Coordinates: | 51°28′14″N, 0°27′42″W |
Airlines flying from Seattle (SEA) to London (LHR)
| Air France |
| American Airlines |
| British Airways |
| Delta Air Lines |
| Finnair |
| Iberia Airlines |
| KLM |
| Virgin Atlantic Airways |