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How far is Decatur, IL, from Saint John?

The distance between Saint John (Saint John Airport) and Decatur (Decatur Airport) is 1227 miles / 1974 kilometers / 1066 nautical miles.

The driving distance from Saint John (YSJ) to Decatur (DEC) is 1514 miles / 2436 kilometers, and travel time by car is about 29 hours 6 minutes.

Saint John Airport – Decatur Airport

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1227
Miles
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1974
Kilometers
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1066
Nautical miles

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Distance from Saint John to Decatur

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

Vincenty's formula (applied above)
  • 1226.683 miles
  • 1974.154 kilometers
  • 1065.958 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
  • 1223.861 miles
  • 1969.614 kilometers
  • 1063.506 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 Saint John to Decatur?

The estimated flight time from Saint John Airport to Decatur Airport is 2 hours and 49 minutes.

Flight carbon footprint between Saint John Airport (YSJ) and Decatur Airport (DEC)

On average, flying from Saint John to Decatur generates about 163 kg of CO2 per passenger, and 163 kilograms equals 358 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Saint John to Decatur

See the map of the shortest flight path between Saint John Airport (YSJ) and Decatur Airport (DEC).

Airport information

Origin Saint John Airport
City: Saint John
Country: Canada Flag of Canada
IATA Code: YSJ
ICAO Code: CYSJ
Coordinates: 45°18′57″N, 65°53′25″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