Distance between Atlanta, GA (ATL) and Ontario, CA (ONT)
Flight distance from Atlanta to Ontario (Hartsfield–Jackson Atlanta International Airport – Ontario International Airport) is 1899 miles / 3057 kilometers / 1651 nautical miles. Estimated flight time is 4 hours 5 minutes.
Driving distance from Atlanta (ATL) to Ontario (ONT) is 2145 miles / 3452 kilometers and travel time by car is about 36 hours 1 minutes.
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Atlanta - Ontario
Map of flight path and driving directions from Atlanta to Ontario.
Shortest flight path between Hartsfield–Jackson Atlanta International Airport (ATL) and Ontario International Airport (ONT).
How far is Ontario from Atlanta?
There are several ways to calculate distances between Atlanta and Ontario. Here are two common methods:
Vincenty's formula (applied above)- 1899.480 miles
- 3056.916 kilometers
- 1650.603 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- 1895.389 miles
- 3050.332 kilometers
- 1647.048 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 | Hartsfield–Jackson Atlanta International Airport |
|---|---|
| City: | Atlanta, GA |
| Country: | United States  |
| IATA Code: | ATL |
| ICAO Code: | KATL |
| Coordinates: | 33°38′12″N, 84°25′41″W |
| B | Ontario International Airport |
|---|---|
| City: | Ontario, CA |
| Country: | United States |
| IATA Code: | ONT |
| ICAO Code: | KONT |
| Coordinates: | 34°3′21″N, 117°36′3″W |
Time difference and current local times
The time difference between Atlanta and Ontario is 3 hours. Ontario is 3 hours behind Atlanta.
Time Difference
Atlanta, GA
Ontario, CA
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 208 kg (459 pounds).
Frequent Flyer Miles Calculator
Atlanta (ATL) → Ontario (ONT).
In total
Round trip?