Map of flight path from Chicago to Ulsan.
Shortest flight path between Chicago O'Hare International Airport (ORD) and Ulsan Airport (USN).
How far is Ulsan from Chicago?
There are several ways to calculate distances between Chicago and Ulsan. Here are two common methods:Vincenty's formula (applied above)
- 6597.370 miles
- 10617.437 kilometers
- 5732.958 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
- 6582.533 miles
- 10593.559 kilometers
- 5720.065 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).
Time difference and current local times
The time difference between Chicago and Ulsan is 15 hours. Ulsan is 15 hours ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 799 kg (1 761 pounds).
Frequent Flyer Miles Calculator
Chicago (ORD) → Ulsan (USN).