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

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

Distance from Unalaska to Chicago

There are several ways to calculate the distance from Unalaska to Chicago. 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 Unalaska to Chicago?

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

What is the time difference between Unalaska and Chicago?

The time difference between Unalaska and Chicago is 4 hours. Chicago is 4 hours ahead of Unalaska.

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

On average, flying from Unalaska to Chicago 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 Unalaska to Chicago

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

Airport information

Origin	Unalaska Airport
City:	Unalaska, AK
Country:	United States
IATA Code:	DUT
ICAO Code:	PADU
Coordinates:	53°54′0″N, 166°32′38″W

Destination	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