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How far is Saint John from Decatur, IL?

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

The driving distance from Decatur (DEC) to Saint John (YSJ) is 1517 miles / 2442 kilometers, and travel time by car is about 29 hours 7 minutes.

Decatur Airport – Saint John 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 Decatur to Saint John

There are several ways to calculate the distance from Decatur to Saint John. 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 Decatur to Saint John?

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

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

On average, flying from Decatur to Saint John 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 Decatur to Saint John

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

Airport information

Origin 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
Destination 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