How far is Seattle, WA, from London?

The distance between London (London Gatwick Airport) and Seattle (Seattle–Tacoma International Airport) is 4825 miles / 7765 kilometers / 4193 nautical miles.

Distance from London to Seattle

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

Vincenty's formula (applied above)

• 4825.053 miles
• 7765.170 kilometers
• 4192.856 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

• 4810.659 miles
• 7742.005 kilometers
• 4180.348 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 London to Seattle?

The estimated flight time from London Gatwick Airport to Seattle–Tacoma International Airport is 9 hours and 38 minutes.

What is the time difference between London and Seattle?

The time difference between London and Seattle is 8 hours. Seattle is 8 hours behind London.

Flight carbon footprint between London Gatwick Airport (LGW) and Seattle–Tacoma International Airport (SEA)

On average, flying from London to Seattle generates about 561 kg of CO2 per passenger, and 561 kilograms equals 1 237 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from London to Seattle

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

Airport information

Origin	London Gatwick Airport
City:	London
Country:	United Kingdom
IATA Code:	LGW
ICAO Code:	EGKK
Coordinates:	51°8′53″N, 0°11′25″W

Destination	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