How far is Portsmouth, NH, from Unalaska, AK?

The distance between Unalaska (Unalaska Airport) and Portsmouth (Portsmouth International Airport at Pease) is 4116 miles / 6625 kilometers / 3577 nautical miles.

Distance from Unalaska to Portsmouth

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

Vincenty's formula (applied above)

• 4116.336 miles
• 6624.601 kilometers
• 3576.999 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

• 4104.555 miles
• 6605.641 kilometers
• 3566.761 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 Unalaska to Portsmouth?

The estimated flight time from Unalaska Airport to Portsmouth International Airport at Pease is 8 hours and 17 minutes.

What is the time difference between Unalaska and Portsmouth?

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

Flight carbon footprint between Unalaska Airport (DUT) and Portsmouth International Airport at Pease (PSM)

On average, flying from Unalaska to Portsmouth generates about 471 kg of CO2 per passenger, and 471 kilograms equals 1 038 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Unalaska to Portsmouth

See the map of the shortest flight path between Unalaska Airport (DUT) and Portsmouth International Airport at Pease (PSM).

Airport information

Origin	Unalaska Airport
City:	Unalaska, AK
Country:	United States
IATA Code:	DUT
ICAO Code:	PADU
Coordinates:	53°54′0″N, 166°32′38″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