Air Miles Calculator

Distance between Dallas, TX (DAL) and Decatur, IL (DEC)

Flight distance from Dallas to Decatur (Dallas Love Field – Decatur Airport) is 656 miles / 1055 kilometers / 570 nautical miles. Estimated flight time is 1 hour 44 minutes.

Driving distance from Dallas (DAL) to Decatur (DEC) is 771 miles / 1240 kilometers and travel time by car is about 13 hours 56 minutes.

Map of flight path and driving directions from Dallas to Decatur.

Shortest flight path between Dallas Love Field (DAL) and Decatur Airport (DEC).

How far is Decatur from Dallas?

There are several ways to calculate distances between Dallas and Decatur. Here are two common methods:

Vincenty's formula (applied above)
  • 655.612 miles
  • 1055.105 kilometers
  • 569.711 nautical miles

Vincenty's formula calculates the distance between latitude/longitude points on the earth’s surface, using an ellipsoidal model of the earth.

Haversine formula
  • 655.654 miles
  • 1055.173 kilometers
  • 569.748 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).

Airport information


A Dallas Love Field
City: Dallas, TX
Country: United States Flag of United States
IATA Code: DAL
ICAO Code: KDAL
Coordinates: 32°50′49″N, 96°51′6″W

B Decatur Airport
City: Decatur, IL
Country: United States Flag of United States
IATA Code: DEC
ICAO Code: KDEC
Coordinates: 39°50′4″N, 88°51′56″W

Time difference and current local times

There is no time difference between Dallas and Decatur.

Time Difference

Dallas, TX

 CST

Decatur, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 120 kg (263 pounds).

Frequent Flyer Miles Calculator

Dallas (DAL) → Decatur (DEC).

Distance:
656
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
656

Round trip?