Air Miles Calculator

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

Distance from Washington D.C. to Ontario (Washington Dulles International Airport – Ontario International Airport) is 2242 miles / 3608 kilometers / 1948 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)
  • 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).

Flight duration

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..

Time Difference

Washington D.C.
Ontario

Washington D.C.

 EDT

Ontario, CA

 PDT

Carbon dioxide emissions

Estimated CO2 emissions per passenger is 249 kg (549 pounds).

Airport information


A Washington Dulles International Airport
City: Washington D.C.
Country: United States Flag of United States
IATA Code: IAD
ICAO Code: KIAD
Coordinates: 38°56′40″N, 77°27′20″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

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).

Elite level bonus (%):
Booking class bonus (%):
Air miles:
2242
Elite level bonus:
0
Booking class bonus:
0

In total

Total frequent flyer miles:
2242

Round trip?