How far is London from Seattle, WA?

The distance between Seattle (Seattle–Tacoma International Airport) and London (London Stansted Airport) is 4796 miles / 7718 kilometers / 4168 nautical miles.

Distance from Seattle to London

There are several ways to calculate the distance from Seattle to London. Here are two standard methods:

Vincenty's formula (applied above)

• 4795.883 miles
• 7718.225 kilometers
• 4167.508 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.

Haversine formula

• 4781.490 miles
• 7695.062 kilometers
• 4155.001 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).

How long does it take to fly from Seattle to London?

The estimated flight time from Seattle–Tacoma International Airport to London Stansted Airport is 9 hours and 34 minutes.

What is the time difference between Seattle and London?

The time difference between Seattle and London is 8 hours. London is 8 hours ahead of Seattle.

Flight carbon footprint between Seattle–Tacoma International Airport (SEA) and London Stansted Airport (STN)

On average, flying from Seattle to London generates about 557 kg of CO2 per passenger, and 557 kilograms equals 1 229 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Seattle to London

See the map of the shortest flight path between Seattle–Tacoma International Airport (SEA) and London Stansted Airport (STN).

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 Stansted Airport
City:	London
Country:	United Kingdom
IATA Code:	STN
ICAO Code:	EGSS
Coordinates:	51°53′5″N, 0°14′5″E