How far is Adak Island, AK, from Portsmouth, NH?

The distance between Portsmouth (Portsmouth International Airport at Pease) and Adak Island (Adak Airport) is 4540 miles / 7306 kilometers / 3945 nautical miles.

Distance from Portsmouth to Adak Island

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

Vincenty's formula (applied above)

• 4539.954 miles
• 7306.348 kilometers
• 3945.112 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

• 4527.068 miles
• 7285.609 kilometers
• 3933.914 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 Adak Island?

The estimated flight time from Portsmouth International Airport at Pease to Adak Airport is 9 hours and 5 minutes.

What is the time difference between Portsmouth and Adak Island?

The time difference between Portsmouth and Adak Island is 5 hours. Adak Island is 5 hours behind Portsmouth.

Flight carbon footprint between Portsmouth International Airport at Pease (PSM) and Adak Airport (ADK)

On average, flying from Portsmouth to Adak Island generates about 525 kg of CO2 per passenger, and 525 kilograms equals 1 156 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Portsmouth to Adak Island

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

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	Adak Airport
City:	Adak Island, AK
Country:	United States
IATA Code:	ADK
ICAO Code:	PADK
Coordinates:	51°52′40″N, 176°38′45″W