Map of flight path from Chicago to Jeju.
Shortest flight path between Chicago O'Hare International Airport (ORD) and Jeju International Airport (CJU).
How far is Jeju from Chicago?
There are several ways to calculate distances between Chicago and Jeju. Here are two common methods:Vincenty's formula (applied above)
- 6797.770 miles
- 10939.950 kilometers
- 5907.100 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
- 6783.119 miles
- 10916.371 kilometers
- 5894.369 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 Jeju is 15 hours. Jeju is 15 hours ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 826 kg (1 822 pounds).
Frequent Flyer Miles Calculator
Chicago (ORD) → Jeju (CJU).