How far is Ontario, CA, from Washington D.C.?
The distance between Washington D.C. (Ronald Reagan Washington National Airport) and Ontario (Ontario International Airport) is 2265 miles / 3645 kilometers / 1968 nautical miles.
The driving distance from Washington D.C. (DCA) to Ontario (ONT) is 2599 miles / 4182 kilometers, and travel time by car is about 46 hours 25 minutes.
Ronald Reagan Washington National Airport – Ontario International Airport
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Distance from Washington D.C. to Ontario
There are several ways to calculate the distance from Washington D.C. to Ontario. Here are two standard methods:
Vincenty's formula (applied above)- 2264.800 miles
- 3644.843 kilometers
- 1968.058 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- 2259.809 miles
- 3636.810 kilometers
- 1963.720 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 Washington D.C. to Ontario?
The estimated flight time from Ronald Reagan Washington National Airport to Ontario International Airport is 4 hours and 47 minutes.
What is the time difference between Washington D.C. and Ontario?
Flight carbon footprint between Ronald Reagan Washington National Airport (DCA) and Ontario International Airport (ONT)
On average, flying from Washington D.C. to Ontario generates about 248 kg of CO2 per passenger, and 248 kilograms equals 546 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path and driving directions from Washington D.C. to Ontario
See the map of the shortest flight path between Ronald Reagan Washington National Airport (DCA) and Ontario International Airport (ONT).
Airport information
| Origin | Ronald Reagan Washington National Airport |
|---|---|
| City: | Washington D.C. |
| Country: | United States  |
| IATA Code: | DCA |
| ICAO Code: | KDCA |
| Coordinates: | 38°51′7″N, 77°2′15″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 |