Distance between Seattle, WA (SEA) and London (LHR)
Distance from Seattle (Seattle–Tacoma International Airport) to London (Heathrow Airport) is 4800 miles / 7725 kilometers / 4171 nautical miles.
Calculations with different 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).
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
London
Seattle, WA
PDT
London
BST
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).
Elite level bonus (%):
Booking class bonus (%):
Air miles:
4800
Elite level bonus:
0
Booking class bonus:
0
In total
Total frequent flyer miles:
4800
Round trip?