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How far is Decatur, IL, from Billings, MT?

The distance between Billings (Billings Logan International Airport) and Decatur (Decatur Airport) is 1078 miles / 1735 kilometers / 937 nautical miles.

The driving distance from Billings (BIL) to Decatur (DEC) is 1274 miles / 2050 kilometers, and travel time by car is about 23 hours 25 minutes.

Billings Logan International Airport – Decatur Airport

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1078
Miles
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1735
Kilometers
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937
Nautical miles

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Distance from Billings to Decatur

There are several ways to calculate the distance from Billings to Decatur. Here are two standard methods:

Vincenty's formula (applied above)
  • 1077.941 miles
  • 1734.777 kilometers
  • 936.705 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
  • 1075.643 miles
  • 1731.079 kilometers
  • 934.708 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 Billings to Decatur?

The estimated flight time from Billings Logan International Airport to Decatur Airport is 2 hours and 32 minutes.

Flight carbon footprint between Billings Logan International Airport (BIL) and Decatur Airport (DEC)

On average, flying from Billings to Decatur generates about 156 kg of CO2 per passenger, and 156 kilograms equals 343 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Billings to Decatur

See the map of the shortest flight path between Billings Logan International Airport (BIL) and Decatur Airport (DEC).

Airport information

Origin Billings Logan International Airport
City: Billings, MT
Country: United States Flag of United States
IATA Code: BIL
ICAO Code: KBIL
Coordinates: 45°48′27″N, 108°32′34″W
Destination 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