How far is Unalaska, AK, from Chicago, IL?

The distance between Chicago (Chicago O'Hare International Airport) and Unalaska (Unalaska Airport) is 3547 miles / 5708 kilometers / 3082 nautical miles.

Distance from Chicago to Unalaska

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

Vincenty's formula (applied above)

• 3546.893 miles
• 5708.170 kilometers
• 3082.165 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

• 3537.053 miles
• 5692.335 kilometers
• 3073.615 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 Chicago to Unalaska?

The estimated flight time from Chicago O'Hare International Airport to Unalaska Airport is 7 hours and 12 minutes.

What is the time difference between Chicago and Unalaska?

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

Flight carbon footprint between Chicago O'Hare International Airport (ORD) and Unalaska Airport (DUT)

On average, flying from Chicago to Unalaska generates about 400 kg of CO2 per passenger, and 400 kilograms equals 883 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path from Chicago to Unalaska

See the map of the shortest flight path between Chicago O'Hare International Airport (ORD) and Unalaska Airport (DUT).

Airport information

Origin	Chicago O'Hare International Airport
City:	Chicago, IL
Country:	United States
IATA Code:	ORD
ICAO Code:	KORD
Coordinates:	41°58′42″N, 87°54′17″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