How far is Decatur, IL, from Dayton, OH?

The distance between Dayton (Dayton International Airport) and Decatur (Decatur Airport) is 247 miles / 398 kilometers / 215 nautical miles.

The driving distance from Dayton (DAY) to Decatur (DEC) is 279 miles / 449 kilometers, and travel time by car is about 5 hours 19 minutes.

Distance from Dayton to Decatur

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

Vincenty's formula (applied above)

• 247.027 miles
• 397.552 kilometers
• 214.661 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

• 246.412 miles
• 396.562 kilometers
• 214.126 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 Dayton to Decatur?

The estimated flight time from Dayton International Airport to Decatur Airport is 58 minutes.

What is the time difference between Dayton and Decatur?

The time difference between Dayton and Decatur is 1 hour. Decatur is 1 hour behind Dayton.

Flight carbon footprint between Dayton International Airport (DAY) and Decatur Airport (DEC)

On average, flying from Dayton to Decatur generates about 61 kg of CO2 per passenger, and 61 kilograms equals 135 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.

Map of flight path and driving directions from Dayton to Decatur

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

Airport information

Origin	Dayton International Airport
City:	Dayton, OH
Country:	United States
IATA Code:	DAY
ICAO Code:	KDAY
Coordinates:	39°54′8″N, 84°13′9″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