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How far is Fort Smith from Idaho Falls, ID?

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

The driving distance from Idaho Falls (IDA) to Fort Smith (YSM) is 1364 miles / 2195 kilometers, and travel time by car is about 30 hours 3 minutes.

Idaho Falls Regional Airport – Fort Smith Airport

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1141
Miles
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1836
Kilometers
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992
Nautical miles

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Distance from Idaho Falls to Fort Smith

There are several ways to calculate the distance from Idaho Falls to Fort Smith. 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 Idaho Falls to Fort Smith?

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

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

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

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

On average, flying from Idaho Falls to Fort Smith 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 Idaho Falls to Fort Smith

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

Airport information

Origin 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
Destination 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