How far is London from Portsmouth, NH?

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

Distance from Portsmouth to London

There are several ways to calculate the distance from Portsmouth to London. 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 Portsmouth to London?

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

What is the time difference between Portsmouth and London?

The time difference between Portsmouth and London is 5 hours. London is 5 hours ahead of Portsmouth.

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

On average, flying from Portsmouth to London 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 Portsmouth to London

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

Airport information

Origin	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

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