How far is Reading from Chicago?
There are several ways to calculate distances between Chicago and Reading. Here are two common methods:Vincenty's formula (applied above)
- 631.674 miles
- 1016.582 kilometers
- 548.910 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
- 630.126 miles
- 1014.090 kilometers
- 547.565 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 Chicago O'Hare International Airport (ORD) to Reading Regional Airport (RDG) is 1 hour 41 minutes.
Time difference and current local times
The time difference between Chicago and Reading is 1 hour. Reading is 1 hour ahead of Chicago.
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 117 kg (257 pounds).
Chicago to Reading flight path
Shortest flight path between Chicago O'Hare International Airport (ORD) and Reading Regional Airport (RDG).
Frequent Flyer Miles Calculator
Chicago (ORD) → Reading (RDG).