How far is Unalaska, AK, from Harlingen, TX?

The distance between Harlingen (Valley International Airport) and Unalaska (Unalaska Airport) is 3931 miles / 6326 kilometers / 3416 nautical miles.

Distance from Harlingen to Unalaska

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

Vincenty's formula (applied above)

• 3931.075 miles
• 6326.452 kilometers
• 3416.011 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

• 3925.032 miles
• 6316.726 kilometers
• 3410.759 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 Harlingen to Unalaska?

The estimated flight time from Valley International Airport to Unalaska Airport is 7 hours and 56 minutes.

What is the time difference between Harlingen and Unalaska?

The time difference between Harlingen and Unalaska is 4 hours. Unalaska is 4 hours behind Harlingen.

Flight carbon footprint between Valley International Airport (HRL) and Unalaska Airport (DUT)

On average, flying from Harlingen to Unalaska generates about 448 kg of CO2 per passenger, and 448 kilograms equals 987 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Harlingen to Unalaska

See the map of the shortest flight path between Valley International Airport (HRL) and Unalaska Airport (DUT).

Airport information

Origin	Valley International Airport
City:	Harlingen, TX
Country:	United States
IATA Code:	HRL
ICAO Code:	KHRL
Coordinates:	26°13′42″N, 97°39′15″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