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

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

Distance from Adak Island to Portsmouth

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

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

What is the time difference between Adak Island and Portsmouth?

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

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

On average, flying from Adak Island to Portsmouth 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 Adak Island to Portsmouth

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

Airport information

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