How far is Unalaska from Chicago?
There are several ways to calculate distances between Chicago and Unalaska. Here are two common 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 earth.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).
Estimated flight time from O'Hare International Airport (ORD) to Unalaska Airport (DUT) is 7 hours 12 minutes.
Time difference and current local times
The time difference between Chicago and Unalaska is 4 hours. Unalaska is 4 hours behind Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 406 kg (896 pounds).
Chicago to Unalaska flight map.
Frequent Flyer Miles Calculator
Chicago (ORD) → Unalaska (DUT).