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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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.
What is the time difference between Decatur and Ontario?
The time difference between Decatur and Ontario is 2 hours. Ontario is 2 hours behind Decatur.
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  |
| 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 |
| IATA Code: | ONT |
| ICAO Code: | KONT |
| Coordinates: | 34°3′21″N, 117°36′3″W |