Air Miles Calculator

Distance between Fairbanks, AK (FAI) and Decatur, IL (DEC)

Flight distance from Fairbanks to Decatur (Fairbanks International Airport – Decatur Airport) is 2879 miles / 4634 kilometers / 2502 nautical miles. Estimated flight time is 5 hours 57 minutes.

Driving distance from Fairbanks (FAI) to Decatur (DEC) is 3600 miles / 5793 kilometers and travel time by car is about 64 hours 38 minutes.

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

Shortest flight path between Fairbanks International Airport (FAI) and Decatur Airport (DEC).

How far is Decatur from Fairbanks?

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

Vincenty's formula (applied above)
  • 2879.375 miles
  • 4633.904 kilometers
  • 2502.108 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
  • 2872.920 miles
  • 4623.516 kilometers
  • 2496.499 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 Fairbanks International Airport
City: Fairbanks, AK
Country: United States Flag of United States
IATA Code: FAI
ICAO Code: PAFA
Coordinates: 64°48′54″N, 147°51′21″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

The time difference between Fairbanks and Decatur is 3 hours. Decatur is 3 hours ahead of Fairbanks.

Time Difference

Fairbanks, AK

 AKST

Decatur, IL

 CST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 320 kg (705 pounds).

Frequent Flyer Miles Calculator

Fairbanks (FAI) → Decatur (DEC).

Distance:
2879
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
2879

Round trip?