Map of flight path and driving directions from Chicago to Boston.
Shortest flight path between Chicago O'Hare International Airport (ORD) and Logan International Airport (BOS).
How far is Boston from Chicago?
There are several ways to calculate distances between Chicago and Boston. 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).
Time difference and current local times
The time difference between Chicago and Boston is 1 hour. Boston is 1 hour ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 141 kg (310 pounds).
Frequent Flyer Miles Calculator
Chicago (ORD) → Boston (BOS).