Map of flight path and driving directions from Chicago to Westerly.
Shortest flight path between Chicago O'Hare International Airport (ORD) and Westerly State Airport (WST).
How far is Westerly from Chicago?
There are several ways to calculate distances between Chicago and Westerly. Here are two common methods:Vincenty's formula (applied above)
- 833.163 miles
- 1340.847 kilometers
- 723.999 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
- 831.009 miles
- 1337.379 kilometers
- 722.127 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 Westerly is 1 hour. Westerly is 1 hour ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 138 kg (304 pounds).
Frequent Flyer Miles Calculator
Chicago (ORD) → Westerly (WST).