How far is Portsmouth, NH, from London?

The distance between London (London Gatwick Airport) and Portsmouth (Portsmouth International Airport at Pease) is 3247 miles / 5225 kilometers / 2821 nautical miles.

Distance from London to Portsmouth

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

Vincenty's formula (applied above)

• 3246.518 miles
• 5224.764 kilometers
• 2821.147 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

• 3237.400 miles
• 5210.090 kilometers
• 2813.224 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 Portsmouth?

The estimated flight time from London Gatwick Airport to Portsmouth International Airport at Pease is 6 hours and 38 minutes.

What is the time difference between London and Portsmouth?

The time difference between London and Portsmouth is 5 hours. Portsmouth is 5 hours behind London.

Flight carbon footprint between London Gatwick Airport (LGW) and Portsmouth International Airport at Pease (PSM)

On average, flying from London to Portsmouth generates about 364 kg of CO2 per passenger, and 364 kilograms equals 802 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from London to Portsmouth

See the map of the shortest flight path between London Gatwick Airport (LGW) and Portsmouth International Airport at Pease (PSM).

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	Portsmouth International Airport at Pease
City:	Portsmouth, NH
Country:	United States
IATA Code:	PSM
ICAO Code:	KPSM
Coordinates:	43°4′40″N, 70°49′23″W