How far is Ontario from Washington D.C.?
There are several ways to calculate distances between Washington D.C. and Ontario. Here are two common 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 earth.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).
Estimated flight time from Ronald Reagan Washington National Airport (DCA) to Ontario International Airport (ONT) is 4 hours 47 minutes.
Time difference and current local times
The time difference between Washington D.C. and Ontario is 3 hours. Ontario is 3 hours behind Washington D.C..
Carbon dioxide emissions
Estimated CO2 emissions per passenger is 252 kg (555 pounds).
Washington D.C. to Ontario flight map.
Frequent Flyer Miles Calculator
Washington D.C. (DCA) → Ontario (ONT).