Air Miles Calculator

Distance between San Diego, CA (SAN) and Decatur, IL (DEC)

Distance from San Diego to Decatur (San Diego International Airport – Decatur Airport) is 1647 miles / 2651 kilometers / 1431 nautical miles.

How far is Decatur from San Diego?

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

Vincenty's formula (applied above)
  • 1647.216 miles
  • 2650.937 kilometers
  • 1431.392 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
  • 1644.085 miles
  • 2645.898 kilometers
  • 1428.671 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).

Flight duration

Estimated flight time from San Diego International Airport (SAN) to Decatur Airport (DEC) is 3 hours 37 minutes.

Time difference and current local times

The time difference between San Diego and Decatur is 2 hours. Decatur is 2 hours ahead of San Diego.

Time Difference

San Diego
Decatur

San Diego, CA

 PDT

Decatur, IL

 CDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 181 kg (398 pounds).

Airport information


A San Diego International Airport
City: San Diego, CA
Country: United States Flag of United States
IATA Code: SAN
ICAO Code: KSAN
Coordinates: 32°44′0″N, 117°11′24″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

San Diego to Decatur flight path

Shortest flight path between San Diego International Airport (SAN) and Decatur Airport (DEC).

Frequent Flyer Miles Calculator

San Diego (SAN) → Decatur (DEC).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
1647
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
1647

Round trip?