Air Miles Calculator logo

How far is Idaho Falls, ID, from Fort Smith?

The distance between Fort Smith (Fort Smith Airport) and Idaho Falls (Idaho Falls Regional Airport) is 1141 miles / 1836 kilometers / 992 nautical miles.

The driving distance from Fort Smith (YSM) to Idaho Falls (IDA) is 1365 miles / 2196 kilometers, and travel time by car is about 30 hours 6 minutes.

Fort Smith Airport – Idaho Falls Regional Airport

Distance arrow
1141
Miles
Distance arrow
1836
Kilometers
Distance arrow
992
Nautical miles

Search flights

Distance from Fort Smith to Idaho Falls

There are several ways to calculate the distance from Fort Smith to Idaho Falls. Here are two standard methods:

Vincenty's formula (applied above)
  • 1141.123 miles
  • 1836.459 kilometers
  • 991.608 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
  • 1140.445 miles
  • 1835.368 kilometers
  • 991.019 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 Fort Smith to Idaho Falls?

The estimated flight time from Fort Smith Airport to Idaho Falls Regional Airport is 2 hours and 39 minutes.

What is the time difference between Fort Smith and Idaho Falls?

There is no time difference between Fort Smith and Idaho Falls.

Flight carbon footprint between Fort Smith Airport (YSM) and Idaho Falls Regional Airport (IDA)

On average, flying from Fort Smith to Idaho Falls generates about 159 kg of CO2 per passenger, and 159 kilograms equals 350 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Fort Smith to Idaho Falls

See the map of the shortest flight path between Fort Smith Airport (YSM) and Idaho Falls Regional Airport (IDA).

Airport information

Origin Fort Smith Airport
City: Fort Smith
Country: Canada Flag of Canada
IATA Code: YSM
ICAO Code: CYSM
Coordinates: 60°1′13″N, 111°57′43″W
Destination Idaho Falls Regional Airport
City: Idaho Falls, ID
Country: United States Flag of United States
IATA Code: IDA
ICAO Code: KIDA
Coordinates: 43°30′52″N, 112°4′15″W