Air Miles Calculator

Distance between Sioux City, IA (SUX) and Fort Smith, AR (FSM)

Flight distance from Sioux City to Fort Smith (Sioux Gateway Airport – Fort Smith Regional Airport) is 499 miles / 804 kilometers / 434 nautical miles. Estimated flight time is 1 hour 26 minutes.

Driving distance from Sioux City (SUX) to Fort Smith (FSM) is 559 miles / 900 kilometers and travel time by car is about 9 hours 46 minutes.

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

Shortest flight path between Sioux Gateway Airport (SUX) and Fort Smith Regional Airport (FSM).

How far is Fort Smith from Sioux City?

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

Vincenty's formula (applied above)
  • 499.360 miles
  • 803.641 kilometers
  • 433.932 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
  • 500.081 miles
  • 804.803 kilometers
  • 434.559 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 Fort Smith Regional Airport
City: Fort Smith, AR
Country: United States Flag of United States
IATA Code: FSM
ICAO Code: KFSM
Coordinates: 35°20′11″N, 94°22′2″W

Time difference and current local times

There is no time difference between Sioux City and Fort Smith.

Time Difference

Sioux City, IA

 CST

Fort Smith, AR

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 99 kg (217 pounds).

Frequent Flyer Miles Calculator

Sioux City (SUX) → Fort Smith (FSM).

Distance:
499
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
499

Round trip?