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Chicago–Grand Forks | ORD–GFK
Calculations with different methods
- 612.863 miles
- 986.307 kilometers
- 532.563 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
- 612.089 miles
- 985.061 kilometers
- 531.891 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 Grand Forks International Airport (GFK) is 1 hour 39 minutes.
Time difference and current local times
There is no time difference between Chicago and Grand Forks.
Grand Forks, ND
Chicago to Grand Forks flight map.
Frequent Flyer Miles Calculator
Chicago (ORD) → Grand Forks (GFK).