Cheap Flights from Ontario International Airport to Washington D.C (IAD) Find and Compare the Best Airline Deals | Skyticket

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2025/7
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Total Fares（Round-Trip/Economy）: USD /Per Person

* Displayed fare(s) may differ from the actual search result

Ontario－Washington Dulles Airport
July Lowest Airfares
USD455

The airfare displayed above is for United Airlines

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Ontario－Washington Dulles Airport
August Lowest Airfares
USD323

The airfare displayed above is for United Airlines

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Ontario－Washington Dulles Airport
September Lowest Airfares
USD342

The airfare displayed above is for Delta Air Lines

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Ontario－Washington Dulles Airport
October Lowest Airfares -----
Ontario－Washington Dulles Airport
November Lowest Airfares -----

Ontario－Washington D.C
Estimated Flight Time
5 Hours 34 Minutes
Ontario－Washington D.C
Number of Operating Airlines
4

Operating Airlines for Ontario－Washington Dulles Airport Route
United Airlines

American Airlines

Alaska Airlines

Delta Air Lines

Other Destinations from:Ontario

Ontario－Washington D.C(Ronald Reagan Washington National)
USD238〜
Ontario－Washington D.C(Baltimore-Washington)
USD316〜
Ontario－Chicago(Midway)
USD252〜
Ontario－Chicago(O'Hare)
USD252〜
Ontario－Dallas(/Fort Worth)
USD243〜
Ontario－Dallas(Love Field)
USD336〜
Ontario－San Diego(SAN)
USD502〜
Ontario－Atlanta(Hartsfield-Jackson)
USD333〜
* Fares vary in accordance to seat availability
Other Departures to: Washington D.C

Philadelphia Airport－Washington D.C(Washington Dulles)
USD245〜
* Fares vary in accordance to seat availability