How far is Chicago from Boston?
There are several ways to calculate distances between Boston and Chicago. Here are two common methods:Vincenty's formula (applied above)
- 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 – the shortest distance between two points).
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.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 141 kg (310 pounds).
Boston to Chicago flight path
Shortest flight path between Logan International Airport (BOS) and O'Hare International Airport (ORD).
Frequent Flyer Miles Calculator
Boston (BOS) → Chicago (ORD).