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.
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Multiple airports
San Diego - Decatur
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, CA
Decatur, IL
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  |
| IATA Code: | SAN |
| ICAO Code: | KSAN |
| Coordinates: | 32°44′0″N, 117°11′24″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 |
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).
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