Air Miles Calculator

Distance between Sioux City, IA (SUX) and Decatur, IL (DEC)

Flight distance from Sioux City to Decatur (Sioux Gateway Airport – Decatur Airport) is 430 miles / 693 kilometers / 374 nautical miles. Estimated flight time is 1 hour 18 minutes.

Driving distance from Sioux City (SUX) to Decatur (DEC) is 544 miles / 876 kilometers and travel time by car is about 9 hours 28 minutes.

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

Shortest flight path between Sioux Gateway Airport (SUX) and Decatur Airport (DEC).

How far is Decatur from Sioux City?

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

Vincenty's formula (applied above)
  • 430.319 miles
  • 692.531 kilometers
  • 373.937 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
  • 429.494 miles
  • 691.204 kilometers
  • 373.220 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 Decatur Airport
City: Decatur, IL
Country: United States Flag of United States
IATA Code: DEC
ICAO Code: KDEC
Coordinates: 39°50′4″N, 88°51′56″W

Time difference and current local times

There is no time difference between Sioux City and Decatur.

Time Difference

Sioux City, IA

 CST

Decatur, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 88 kg (195 pounds).

Frequent Flyer Miles Calculator

Sioux City (SUX) → Decatur (DEC).

Distance:
430
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
430

Round trip?