How far is Ontario, CA, from Reading, PA?
The distance between Reading (Reading Regional Airport) and Ontario (Ontario International Airport) is 2315 miles / 3726 kilometers / 2012 nautical miles.
The driving distance from Reading (RDG) to Ontario (ONT) is 2630 miles / 4232 kilometers, and travel time by car is about 46 hours 53 minutes.
Reading Regional Airport – Ontario International Airport
Search flights
Distance from Reading to Ontario
There are several ways to calculate the distance from Reading to Ontario. Here are two standard methods:
Vincenty's formula (applied above)- 2315.400 miles
- 3726.275 kilometers
- 2012.028 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.
Haversine formula- 2310.335 miles
- 3718.125 kilometers
- 2007.627 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).
How long does it take to fly from Reading to Ontario?
The estimated flight time from Reading Regional Airport to Ontario International Airport is 4 hours and 53 minutes.
What is the time difference between Reading and Ontario?
The time difference between Reading and Ontario is 3 hours. Ontario is 3 hours behind Reading.
Flight carbon footprint between Reading Regional Airport (RDG) and Ontario International Airport (ONT)
On average, flying from Reading to Ontario generates about 254 kg of CO2 per passenger, and 254 kilograms equals 559 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Reading to Ontario
See the map of the shortest flight path between Reading Regional Airport (RDG) and Ontario International Airport (ONT).
Airport information
| Origin | Reading Regional Airport |
|---|---|
| City: | Reading, PA |
| Country: | United States  |
| IATA Code: | RDG |
| ICAO Code: | KRDG |
| Coordinates: | 40°22′42″N, 75°57′54″W |
| Destination | Ontario International Airport |
|---|---|
| City: | Ontario, CA |
| Country: | United States |
| IATA Code: | ONT |
| ICAO Code: | KONT |
| Coordinates: | 34°3′21″N, 117°36′3″W |