How far is Rockford, IL, from Knoxville, TN?
The distance between Knoxville (Knoxville McGhee Tyson Airport) and Rockford (Chicago Rockford International Airport) is 519 miles / 835 kilometers / 451 nautical miles.
The driving distance from Knoxville (TYS) to Rockford (RFD) is 639 miles / 1029 kilometers, and travel time by car is about 12 hours 10 minutes.
Knoxville McGhee Tyson Airport – Chicago Rockford International Airport
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Distance from Knoxville to Rockford
There are several ways to calculate the distance from Knoxville to Rockford. Here are two standard methods:
Vincenty's formula (applied above)- 518.802 miles
- 834.932 kilometers
- 450.827 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- 519.053 miles
- 835.335 kilometers
- 451.045 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 Knoxville to Rockford?
The estimated flight time from Knoxville McGhee Tyson Airport to Chicago Rockford International Airport is 1 hour and 28 minutes.
What is the time difference between Knoxville and Rockford?
The time difference between Knoxville and Rockford is 1 hour. Rockford is 1 hour behind Knoxville.
Flight carbon footprint between Knoxville McGhee Tyson Airport (TYS) and Chicago Rockford International Airport (RFD)
On average, flying from Knoxville to Rockford generates about 101 kg of CO2 per passenger, and 101 kilograms equals 224 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Knoxville to Rockford
See the map of the shortest flight path between Knoxville McGhee Tyson Airport (TYS) and Chicago Rockford International Airport (RFD).
Airport information
| Origin | Knoxville McGhee Tyson Airport |
|---|---|
| City: | Knoxville, TN |
| Country: | United States  |
| IATA Code: | TYS |
| ICAO Code: | KTYS |
| Coordinates: | 35°48′39″N, 83°59′38″W |
| Destination | 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 |