# Distance between Memphis, TN (MEM) and Decatur, IL (DEC)

Flight distance from Memphis to Decatur (Memphis International Airport – Decatur Airport) is 336 miles / 541 kilometers / 292 nautical miles. Estimated flight time is 1 hour 8 minutes.

Driving distance from Memphis (MEM) to Decatur (DEC) is 403 miles / 648 kilometers and travel time by car is about 7 hours 14 minutes.

## Map of flight path and driving directions from Memphis to Decatur.

Shortest flight path between Memphis International Airport (MEM) and Decatur Airport (DEC).

## How far is Decatur from Memphis?

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

Vincenty's formula (applied above)
• 336.077 miles
• 540.864 kilometers
• 292.043 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
• 336.663 miles
• 541.807 kilometers
• 292.553 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 Memphis International Airport
City: Memphis, TN
Country: United States
IATA Code: MEM
ICAO Code: KMEM
Coordinates: 35°2′32″N, 89°58′36″W

B Decatur Airport
City: Decatur, IL
Country: 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 Memphis and Decatur.

CST

CST

## Carbon dioxide emissions

Estimated CO2 emissions per passenger is 74 kg (164 pounds).

## Frequent Flyer Miles Calculator

Memphis (MEM) → Decatur (DEC).

Distance:
336
Elite level bonus:
0
Booking class bonus:
0

### In total

Total frequent flyer miles:
336

Round trip?