How far is Unalaska, AK, from Kalispell, MT?

The distance between Kalispell (Glacier Park International Airport) and Unalaska (Unalaska Airport) is 2255 miles / 3629 kilometers / 1959 nautical miles.

Distance from Kalispell to Unalaska

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

Vincenty's formula (applied above)

• 2254.739 miles
• 3628.650 kilometers
• 1959.314 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

• 2247.836 miles
• 3617.541 kilometers
• 1953.316 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 Kalispell to Unalaska?

The estimated flight time from Glacier Park International Airport to Unalaska Airport is 4 hours and 46 minutes.

What is the time difference between Kalispell and Unalaska?

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

Flight carbon footprint between Glacier Park International Airport (FCA) and Unalaska Airport (DUT)

On average, flying from Kalispell to Unalaska generates about 247 kg of CO2 per passenger, and 247 kilograms equals 544 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Kalispell to Unalaska

See the map of the shortest flight path between Glacier Park International Airport (FCA) and Unalaska Airport (DUT).

Airport information

Origin	Glacier Park International Airport
City:	Kalispell, MT
Country:	United States
IATA Code:	FCA
ICAO Code:	KGPI
Coordinates:	48°18′37″N, 114°15′21″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