How far is Fort Smith, AR, from Sioux City, IA?
The distance between Sioux City (Sioux Gateway Airport) and Fort Smith (Fort Smith Regional Airport) is 499 miles / 804 kilometers / 434 nautical miles.
The driving distance from Sioux City (SUX) to Fort Smith (FSM) is 565 miles / 909 kilometers, and travel time by car is about 10 hours 23 minutes.
Sioux Gateway Airport – Fort Smith Regional Airport
Search flights
Distance from Sioux City to Fort Smith
There are several ways to calculate the distance from Sioux City to Fort Smith. Here are two standard 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 planet.
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).
How long does it take to fly from Sioux City to Fort Smith?
The estimated flight time from Sioux Gateway Airport to Fort Smith Regional Airport is 1 hour and 26 minutes.
What is the time difference between Sioux City and Fort Smith?
There is no time difference between Sioux City and Fort Smith.
Flight carbon footprint between Sioux Gateway Airport (SUX) and Fort Smith Regional Airport (FSM)
On average, flying from Sioux City to Fort Smith generates about 99 kg of CO2 per passenger, and 99 kilograms equals 217 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Sioux City to Fort Smith
See the map of the shortest flight path between Sioux Gateway Airport (SUX) and Fort Smith Regional Airport (FSM).
Airport information
| Origin | Sioux Gateway Airport |
|---|---|
| City: | Sioux City, IA |
| Country: | United States  |
| IATA Code: | SUX |
| ICAO Code: | KSUX |
| Coordinates: | 42°24′9″N, 96°23′3″W |
| Destination | Fort Smith Regional Airport |
|---|---|
| City: | Fort Smith, AR |
| Country: | United States |
| IATA Code: | FSM |
| ICAO Code: | KFSM |
| Coordinates: | 35°20′11″N, 94°22′2″W |