How far is Unalaska, AK, from Williston, ND?

The distance between Williston (Williston Basin International Airport) and Unalaska (Unalaska Airport) is 2671 miles / 4298 kilometers / 2321 nautical miles.

Distance from Williston to Unalaska

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

Vincenty's formula (applied above)

• 2670.781 miles
• 4298.205 kilometers
• 2320.845 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

• 2662.556 miles
• 4284.969 kilometers
• 2313.698 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 Williston to Unalaska?

The estimated flight time from Williston Basin International Airport to Unalaska Airport is 5 hours and 33 minutes.

What is the time difference between Williston and Unalaska?

The time difference between Williston and Unalaska is 3 hours. Unalaska is 3 hours behind Williston.

Flight carbon footprint between Williston Basin International Airport (XWA) and Unalaska Airport (DUT)

On average, flying from Williston to Unalaska generates about 295 kg of CO2 per passenger, and 295 kilograms equals 651 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Williston to Unalaska

See the map of the shortest flight path between Williston Basin International Airport (XWA) and Unalaska Airport (DUT).

Airport information

Origin	Williston Basin International Airport
City:	Williston, ND
Country:	United States
IATA Code:	XWA
ICAO Code:	KXWA
Coordinates:	48°15′30″N, 103°44′55″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