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How far is Ontario, CA, from Decatur, IL?

The distance between Decatur (Decatur Airport) and Ontario (Ontario International Airport) is 1632 miles / 2626 kilometers / 1418 nautical miles.

The driving distance from Decatur (DEC) to Ontario (ONT) is 1924 miles / 3097 kilometers, and travel time by car is about 33 hours 34 minutes.

Decatur Airport – Ontario International Airport

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1632
Miles
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2626
Kilometers
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1418
Nautical miles

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Distance from Decatur to Ontario

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

Vincenty's formula (applied above)
  • 1631.919 miles
  • 2626.319 kilometers
  • 1418.099 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
  • 1628.544 miles
  • 2620.887 kilometers
  • 1415.166 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 Ontario?

The estimated flight time from Decatur Airport to Ontario International Airport is 3 hours and 35 minutes.

Flight carbon footprint between Decatur Airport (DEC) and Ontario International Airport (ONT)

On average, flying from Decatur to Ontario generates about 188 kg of CO2 per passenger, and 188 kilograms equals 414 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 Ontario

See the map of the shortest flight path between Decatur Airport (DEC) and Ontario International Airport (ONT).

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 Ontario International Airport
City: Ontario, CA
Country: United States Flag of United States
IATA Code: ONT
ICAO Code: KONT
Coordinates: 34°3′21″N, 117°36′3″W