How far is Knoxville, TN, from Rockford, IL?
The distance between Rockford (Chicago Rockford International Airport) and Knoxville (Knoxville McGhee Tyson Airport) is 519 miles / 835 kilometers / 451 nautical miles.
The driving distance from Rockford (RFD) to Knoxville (TYS) is 638 miles / 1027 kilometers, and travel time by car is about 12 hours 11 minutes.
Chicago Rockford International Airport – Knoxville McGhee Tyson Airport
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Distance from Rockford to Knoxville
There are several ways to calculate the distance from Rockford to Knoxville. 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 Rockford to Knoxville?
The estimated flight time from Chicago Rockford International Airport to Knoxville McGhee Tyson Airport is 1 hour and 28 minutes.
What is the time difference between Rockford and Knoxville?
The time difference between Rockford and Knoxville is 1 hour. Knoxville is 1 hour ahead of Rockford.
Flight carbon footprint between Chicago Rockford International Airport (RFD) and Knoxville McGhee Tyson Airport (TYS)
On average, flying from Rockford to Knoxville 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 Rockford to Knoxville
See the map of the shortest flight path between Chicago Rockford International Airport (RFD) and Knoxville McGhee Tyson Airport (TYS).
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 | 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 |