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Boston (BOS) - Chicago (ORD)
Calculations with different methods
- 866.650 miles
- 1394.737 kilometers
- 753.098 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
- 864.377 miles
- 1391.080 kilometers
- 751.123 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance).
Estimated flight time from Logan International Airport (BOS) to O'Hare International Airport (ORD) is 2 hours 8 minutes.
Time difference and current local times
The time difference between Boston and Chicago is 1 hour. Chicago is 1 hour behind Boston.
Flight map from Boston to Chicago.
Frequent Flyer Miles Calculator
Boston (BOS) → Chicago (ORD).