Air Miles Calculator

Distance between Chicago, IL (ORD) and Reading, PA (RDG)

Distance from Chicago to Reading (Reading Regional Airport – O'Hare International Airport) is 632 miles / 1017 kilometers / 549 nautical miles.

Calculations with different 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).

Flight duration

Estimated flight time from 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.

Time Difference

Chicago
Reading

Chicago, IL

 CDT

Reading, PA

 EDT

Airport information


A O'Hare International Airport
City: Chicago, IL
Country: United States Flag of United States
IATA Code: ORD
ICAO Code: KORD
Coordinates: 41°58′42″N, 87°54′17″W

B Reading Regional Airport
City: Reading, PA
Country: United States Flag of United States
IATA Code: RDG
ICAO Code: KRDG
Coordinates: 40°22′42″N, 75°57′54″W

Map

Chicago to Reading flight map.

Frequent Flyer Miles Calculator

Chicago (ORD) → Reading (RDG).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
632
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
632

Round trip?