How far is Portsmouth, NH, from London?

The distance between London (London Heathrow Airport) and Portsmouth (Portsmouth International Airport at Pease) is 3228 miles / 5195 kilometers / 2805 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)

• 3228.131 miles
• 5195.173 kilometers
• 2805.169 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

• 3219.062 miles
• 5180.578 kilometers
• 2797.288 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 Heathrow Airport to Portsmouth International Airport at Pease is 6 hours and 36 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 Heathrow Airport (LHR) and Portsmouth International Airport at Pease (PSM)

On average, flying from London to Portsmouth generates about 362 kg of CO2 per passenger, and 362 kilograms equals 797 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 Heathrow Airport (LHR) and Portsmouth International Airport at Pease (PSM).

Airport information

Origin	London Heathrow Airport
City:	London
Country:	United Kingdom
IATA Code:	LHR
ICAO Code:	EGLL
Coordinates:	51°28′14″N, 0°27′42″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