How far is Washington D.C. from Ontario, CA?
The distance between Ontario (Ontario International Airport) and Washington D.C. (Ronald Reagan Washington National Airport) is 2265 miles / 3645 kilometers / 1968 nautical miles.
The driving distance from Ontario (ONT) to Washington D.C. (DCA) is 2634 miles / 4239 kilometers, and travel time by car is about 46 hours 29 minutes.
Ontario International Airport – Ronald Reagan Washington National Airport
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Distance from Ontario to Washington D.C.
There are several ways to calculate the distance from Ontario to Washington D.C.. 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 Ontario to Washington D.C.?
The estimated flight time from Ontario International Airport to Ronald Reagan Washington National Airport is 4 hours and 47 minutes.
What is the time difference between Ontario and Washington D.C.?
Flight carbon footprint between Ontario International Airport (ONT) and Ronald Reagan Washington National Airport (DCA)
On average, flying from Ontario to Washington D.C. 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 Ontario to Washington D.C.
See the map of the shortest flight path between Ontario International Airport (ONT) and Ronald Reagan Washington National Airport (DCA).
Airport information
| Origin | Ontario International Airport |
|---|---|
| City: | Ontario, CA |
| Country: | United States  |
| IATA Code: | ONT |
| ICAO Code: | KONT |
| Coordinates: | 34°3′21″N, 117°36′3″W |
| Destination | 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 |