Air Miles Calculator

Distance between Sioux City, IA (SUX) and Rockford, IL (RFD)

Flight distance from Sioux City to Rockford (Sioux Gateway Airport – Chicago Rockford International Airport) is 374 miles / 601 kilometers / 325 nautical miles. Estimated flight time is 1 hour 12 minutes.

Driving distance from Sioux City (SUX) to Rockford (RFD) is 398 miles / 640 kilometers and travel time by car is about 7 hours 36 minutes.

Map of flight path and driving directions from Sioux City to Rockford.

Shortest flight path between Sioux Gateway Airport (SUX) and Chicago Rockford International Airport (RFD).

How far is Rockford from Sioux City?

There are several ways to calculate distances between Sioux City and Rockford. Here are two common methods:

Vincenty's formula (applied above)
  • 373.551 miles
  • 601.172 kilometers
  • 324.607 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
  • 372.569 miles
  • 599.592 kilometers
  • 323.754 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).

Airport information


A Sioux Gateway Airport
City: Sioux City, IA
Country: United States Flag of United States
IATA Code: SUX
ICAO Code: KSUX
Coordinates: 42°24′9″N, 96°23′3″W

B Chicago Rockford International Airport
City: Rockford, IL
Country: United States Flag of United States
IATA Code: RFD
ICAO Code: KRFD
Coordinates: 42°11′43″N, 89°5′49″W

Time difference and current local times

There is no time difference between Sioux City and Rockford.

Time Difference

Sioux City, IA

 CST

Rockford, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 80 kg (176 pounds).

Frequent Flyer Miles Calculator

Sioux City (SUX) → Rockford (RFD).

Distance:
374
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
374

Round trip?