How far is Chicago, IL, from Reading, PA?
The distance between Reading (Reading Regional Airport) and Chicago (Chicago O'Hare International Airport) is 632 miles / 1017 kilometers / 549 nautical miles.
The driving distance from Reading (RDG) to Chicago (ORD) is 733 miles / 1180 kilometers, and travel time by car is about 13 hours 34 minutes.
Reading Regional Airport – Chicago O'Hare International Airport
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Distance from Reading to Chicago
There are several ways to calculate the distance from Reading to Chicago. Here are two standard 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 planet.
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).
How long does it take to fly from Reading to Chicago?
The estimated flight time from Reading Regional Airport to Chicago O'Hare International Airport is 1 hour and 41 minutes.
What is the time difference between Reading and Chicago?
The time difference between Reading and Chicago is 1 hour. Chicago is 1 hour behind Reading.
Flight carbon footprint between Reading Regional Airport (RDG) and Chicago O'Hare International Airport (ORD)
On average, flying from Reading to Chicago generates about 117 kg of CO2 per passenger, and 117 kilograms equals 257 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Reading to Chicago
See the map of the shortest flight path between Reading Regional Airport (RDG) and Chicago O'Hare International Airport (ORD).
Airport information
| Origin | Reading Regional Airport |
|---|---|
| City: | Reading, PA |
| Country: | United States  |
| IATA Code: | RDG |
| ICAO Code: | KRDG |
| Coordinates: | 40°22′42″N, 75°57′54″W |
| Destination | Chicago O'Hare International Airport |
|---|---|
| City: | Chicago, IL |
| Country: | United States |
| IATA Code: | ORD |
| ICAO Code: | KORD |
| Coordinates: | 41°58′42″N, 87°54′17″W |