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

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

Distance from Portsmouth to Unalaska

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

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

What is the time difference between Portsmouth and Unalaska?

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

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

On average, flying from Portsmouth to Unalaska 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 Portsmouth to Unalaska

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

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