Calculations with different methods
- 5473.594 miles
- 8808.895 kilometers
- 4756.423 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
- 5459.774 miles
- 8786.655 kilometers
- 4744.414 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from O'Hare International Airport (ORD) to Istanbul Airport (IST) is 10 hours 51 minutes.
Time difference and current local times
The time difference between Chicago and Istanbul is 9 hours. Istanbul is 9 hours ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 687 kg (1 513 pounds).
Chicago to Istanbul flight map.
Frequent Flyer Miles Calculator
Chicago (ORD) → Istanbul (IST).