How far is Decatur, IL, from St Louis, MO?
The distance between St Louis (St. Louis Lambert International Airport) and Decatur (Decatur Airport) is 110 miles / 177 kilometers / 96 nautical miles.
The driving distance from St Louis (STL) to Decatur (DEC) is 149 miles / 239 kilometers, and travel time by car is about 2 hours 52 minutes.
St. Louis Lambert International Airport – Decatur Airport
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Distance from St Louis to Decatur
There are several ways to calculate the distance from St Louis to Decatur. Here are two standard methods:
Vincenty's formula (applied above)- 110.062 miles
- 177.127 kilometers
- 95.641 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- 109.996 miles
- 177.022 kilometers
- 95.584 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 St Louis to Decatur?
The estimated flight time from St. Louis Lambert International Airport to Decatur Airport is 42 minutes.
What is the time difference between St Louis and Decatur?
Flight carbon footprint between St. Louis Lambert International Airport (STL) and Decatur Airport (DEC)
On average, flying from St Louis to Decatur generates about 41 kg of CO2 per passenger, and 41 kilograms equals 91 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from St Louis to Decatur
See the map of the shortest flight path between St. Louis Lambert International Airport (STL) and Decatur Airport (DEC).
Airport information
| Origin | St. Louis Lambert International Airport |
|---|---|
| City: | St Louis, MO |
| Country: | United States  |
| IATA Code: | STL |
| ICAO Code: | KSTL |
| Coordinates: | 38°44′55″N, 90°22′12″W |
| Destination | Decatur Airport |
|---|---|
| City: | Decatur, IL |
| Country: | United States |
| IATA Code: | DEC |
| ICAO Code: | KDEC |
| Coordinates: | 39°50′4″N, 88°51′56″W |