Air Miles Calculator

Distance between Washington D.C. (DCA) and Ontario, CA (ONT)

Distance from Washington D.C. to Ontario (Ronald Reagan Washington National Airport – Ontario International Airport) is 2265 miles / 3645 kilometers / 1968 nautical miles.

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).

Flight duration

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..

Time Difference

Washington D.C.
Ontario

Washington D.C.

 EST

Ontario, CA

 PST

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 252 kg (555 pounds).

Airport information


A Ronald Reagan Washington National Airport
City: Washington D.C.
Country: United States Flag of United States
IATA Code: DCA
ICAO Code: KDCA
Coordinates: 38°51′7″N, 77°2′15″W

B Ontario International Airport
City: Ontario, CA
Country: United States Flag of United States
IATA Code: ONT
ICAO Code: KONT
Coordinates: 34°3′21″N, 117°36′3″W

Map

Washington D.C. to Ontario flight map.

Frequent Flyer Miles Calculator

Washington D.C. (DCA) → Ontario (ONT).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
2265
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
2265

Round trip?