How far is Reading, PA, from Rockford, IL?
The distance between Rockford (Chicago Rockford International Airport) and Reading (Reading Regional Airport) is 694 miles / 1117 kilometers / 603 nautical miles.
The driving distance from Rockford (RFD) to Reading (RDG) is 800 miles / 1287 kilometers, and travel time by car is about 14 hours 50 minutes.
Chicago Rockford International Airport – Reading Regional Airport
Search flights
Distance from Rockford to Reading
There are several ways to calculate the distance from Rockford to Reading. Here are two standard methods:
Vincenty's formula (applied above)- 694.212 miles
- 1117.226 kilometers
- 603.254 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- 692.511 miles
- 1114.489 kilometers
- 601.776 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 Rockford to Reading?
The estimated flight time from Chicago Rockford International Airport to Reading Regional Airport is 1 hour and 48 minutes.
What is the time difference between Rockford and Reading?
The time difference between Rockford and Reading is 1 hour. Reading is 1 hour ahead of Rockford.
Flight carbon footprint between Chicago Rockford International Airport (RFD) and Reading Regional Airport (RDG)
On average, flying from Rockford to Reading generates about 124 kg of CO2 per passenger, and 124 kilograms equals 273 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Rockford to Reading
See the map of the shortest flight path between Chicago Rockford International Airport (RFD) and Reading Regional Airport (RDG).
Airport information
| Origin | Chicago Rockford International Airport |
|---|---|
| City: | Rockford, IL |
| Country: | United States  |
| IATA Code: | RFD |
| ICAO Code: | KRFD |
| Coordinates: | 42°11′43″N, 89°5′49″W |
| Destination | Reading Regional Airport |
|---|---|
| City: | Reading, PA |
| Country: | United States |
| IATA Code: | RDG |
| ICAO Code: | KRDG |
| Coordinates: | 40°22′42″N, 75°57′54″W |