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

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

The driving distance from Decatur (DEC) to Dayton (DAY) is 280 miles / 450 kilometers, and travel time by car is about 5 hours 19 minutes.

Distance from Decatur to Dayton

There are several ways to calculate the distance from Decatur to Dayton. 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 Decatur to Dayton?

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

What is the time difference between Decatur and Dayton?

The time difference between Decatur and Dayton is 1 hour. Dayton is 1 hour ahead of Decatur.

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

On average, flying from Decatur to Dayton 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 Decatur to Dayton

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

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