Flight Routes from Washington DC to Ontario

Compare cheap outbound and return flights from Washington DC (IAD) to Ontario (ONT) and find the best offer from numerous airlines and travel agencies.

Trip type
Cheapest roundtrip flight
from€463
Flight distance
3,604 km
Time difference

Flight schedule from Washington DC (IAD) to Ontario (ONT)

Select a travel date in the flight schedule for the route from Washington DC (IAD) to Ontario (ONT) and compare affordable flight deals.

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Matching outbound flightsIAD–ONT · 1 of 1
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dep.arr.
durationstopovers
  1. January 17 – 23, 2027
  2. January 24 – 30, 2027
  3. Jan 31 – Feb 6, 2027
    No flights could be found for the active filters.
    1. IADONT
      1 stopover
      1. United Airlines

      Important flight information

      Discover more flights around Washington DC and Ontario

      Departure airport Airport Washington DC - Dulles International Airport, DC (IAD)
      Arrival airport Airport Ontario-CA (ONT)
      Destination country Flights to United States
      City-Code - Arrival airport Washington-DC - Ontario-CA
      Departure airport - Destination country Washington DC - Dulles International Airport, DC - United States
      Alternative routes to United States
      Alternative flights to Ontario
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