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)
- 2241.854 miles
- 3607.914 kilometers
- 1948.118 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
- 2236.919 miles
- 3599.973 kilometers
- 1943.830 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 Washington Dulles International Airport (IAD) to Ontario International Airport (ONT) is 4 hours 44 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 249 kg (549 pounds).
Washington D.C. to Ontario flight path
Shortest flight path between Washington Dulles International Airport (IAD) and Ontario International Airport (ONT).
Frequent Flyer Miles Calculator
Washington D.C. (IAD) → Ontario (ONT).