How far is Chicago, IL, from Decatur, IL?
The distance between Decatur (Decatur Airport) and Chicago (Chicago O'Hare International Airport) is 156 miles / 251 kilometers / 136 nautical miles.
The driving distance from Decatur (DEC) to Chicago (ORD) is 190 miles / 306 kilometers, and travel time by car is about 3 hours 49 minutes.
Decatur Airport – Chicago O'Hare International Airport
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Distance from Decatur to Chicago
There are several ways to calculate the distance from Decatur to Chicago. Here are two standard methods:
Vincenty's formula (applied above)- 156.262 miles
- 251.479 kilometers
- 135.788 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- 156.401 miles
- 251.703 kilometers
- 135.908 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 Chicago?
The estimated flight time from Decatur Airport to Chicago O'Hare International Airport is 47 minutes.
What is the time difference between Decatur and Chicago?
Flight carbon footprint between Decatur Airport (DEC) and Chicago O'Hare International Airport (ORD)
On average, flying from Decatur to Chicago generates about 48 kg of CO2 per passenger, and 48 kilograms equals 106 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 Chicago
See the map of the shortest flight path between Decatur Airport (DEC) and Chicago O'Hare International Airport (ORD).
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 | Chicago O'Hare International Airport |
|---|---|
| City: | Chicago, IL |
| Country: | United States |
| IATA Code: | ORD |
| ICAO Code: | KORD |
| Coordinates: | 41°58′42″N, 87°54′17″W |