How far is Green Bay, WI, from Rockford, IL?
The distance between Rockford (Chicago Rockford International Airport) and Green Bay (Green Bay–Austin Straubel International Airport) is 165 miles / 266 kilometers / 144 nautical miles.
The driving distance from Rockford (RFD) to Green Bay (GRB) is 195 miles / 314 kilometers, and travel time by car is about 4 hours 10 minutes.
Chicago Rockford International Airport – Green Bay–Austin Straubel International Airport
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Distance from Rockford to Green Bay
There are several ways to calculate the distance from Rockford to Green Bay. Here are two standard methods:
Vincenty's formula (applied above)- 165.411 miles
- 266.204 kilometers
- 143.739 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- 165.503 miles
- 266.351 kilometers
- 143.818 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 Green Bay?
The estimated flight time from Chicago Rockford International Airport to Green Bay–Austin Straubel International Airport is 48 minutes.
What is the time difference between Rockford and Green Bay?
Flight carbon footprint between Chicago Rockford International Airport (RFD) and Green Bay–Austin Straubel International Airport (GRB)
On average, flying from Rockford to Green Bay generates about 49 kg of CO2 per passenger, and 49 kilograms equals 109 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 Green Bay
See the map of the shortest flight path between Chicago Rockford International Airport (RFD) and Green Bay–Austin Straubel International Airport (GRB).
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 | Green Bay–Austin Straubel International Airport |
|---|---|
| City: | Green Bay, WI |
| Country: | United States |
| IATA Code: | GRB |
| ICAO Code: | KGRB |
| Coordinates: | 44°29′6″N, 88°7′46″W |