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How far is Portsmouth, NH, from Montgomery, AL?

The distance between Montgomery (Montgomery Regional Airport) and Portsmouth (Portsmouth International Airport at Pease) is 1128 miles / 1816 kilometers / 980 nautical miles.

The driving distance from Montgomery (MGM) to Portsmouth (PSM) is 1321 miles / 2126 kilometers, and travel time by car is about 25 hours 16 minutes.

Montgomery Regional Airport – Portsmouth International Airport at Pease

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1128
Miles
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1816
Kilometers
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980
Nautical miles

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Distance from Montgomery to Portsmouth

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

Vincenty's formula (applied above)
  • 1128.274 miles
  • 1815.781 kilometers
  • 980.443 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
  • 1127.666 miles
  • 1814.802 kilometers
  • 979.915 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 Montgomery to Portsmouth?

The estimated flight time from Montgomery Regional Airport to Portsmouth International Airport at Pease is 2 hours and 38 minutes.

Flight carbon footprint between Montgomery Regional Airport (MGM) and Portsmouth International Airport at Pease (PSM)

On average, flying from Montgomery to Portsmouth generates about 158 kg of CO2 per passenger, and 158 kilograms equals 349 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Montgomery to Portsmouth

See the map of the shortest flight path between Montgomery Regional Airport (MGM) and Portsmouth International Airport at Pease (PSM).

Airport information

Origin Montgomery Regional Airport
City: Montgomery, AL
Country: United States Flag of United States
IATA Code: MGM
ICAO Code: KMGM
Coordinates: 32°18′2″N, 86°23′38″W
Destination Portsmouth International Airport at Pease
City: Portsmouth, NH
Country: United States Flag of United States
IATA Code: PSM
ICAO Code: KPSM
Coordinates: 43°4′40″N, 70°49′23″W