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Chicago (ORD) - Duluth (DLH)
Calculations with different methods
- 397.127 miles
- 639.113 kilometers
- 345.094 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
- 397.006 miles
- 638.920 kilometers
- 344.989 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 Duluth International Airport (DLH) is 1 hour 15 minutes.
Time difference and current local times
There is no time difference between Chicago and Duluth.
Flight map from Chicago to Duluth.
Frequent Flyer Miles Calculator
Chicago (ORD) → Duluth (DLH).