Flights from Ontario (ONT) to Washington (IAD)
Change your flight without a fee on select flights
Money Saving Bundle when you purchase Hotel + Flight!
Get mobile alerts about flight delays, gate changes and more with the FREE Wotif app
Cheapest Flights from Ontario (ONT) to Washington (IAD)
Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.
Ontario to Washington Flight Information
Find the Cheapest Flights from Ontario (ONT) to Washington (IAD)
Work hard, travel harder! Wotif brings you the cheapest Ontario to Washington flights, making it possible to have a five star holiday without that five star price tag. Browse and compare our top ONT to IAD routes and airport options. So, go ahead and treat yourself, your sweetheart, or the kids to an unforgettable holiday this year.
to Information
Traveling From | Los Angeles - Ontario Intl. |
|---|---|
Origin Airport | |
Origin Airport IATA Code | ONT |
Traveling To | Washington Dulles Intl. |
Destination Airport | |
Destination Airport IATA Code | IAD |
Number of Airlines Serving | |
Average Flight Time | hours mins |
Direct Flight Time | hours mins |
Flight Price | AU$491 |
Ontario to Washington Flight Deals from AU$491
Considering a quick trip to Washington, but not sure which is the best route for you? Well, you’re in luck! Wotif has done the hard work, so all you need to do is check out these flights from ONT to IAD. With heaps of cheap fares from Ontario, we guarantee you’ll be arriving to your holiday destination in style without emptying your bank account in the process.
It’s easy to book flights to Washington from Ontario
For a huge choice of flights, simply enter your travel dates and hit search and we’ll hunt out fantastic deals on one-way, return and multi-city airfares to Washington from Ontario from 3 different airlines. If you click the ‘direct flights’ box, you see flights that’ll get you to Washington in just hour(s) and mins, too.
Snap up great deals on flights to Washington from Ontario
Choose from flights a day on average, with prices starting at AU$491 and rising to AU$569 depending on the cabin class, travel dates, and airline carrier. And if you’re up for a last-minute getaway, you can get great deals on flights from Ontario to Washington today!
Find cheap airfares to Washington from Ontario
Here are our insider tips for bagging a flight bargain:
- Look for midweek flights and late night, early morning arrival and departure times
- Check out other airports near Ontario and Washington
- Avoid peak season (prices tend to be lower in September)
- Be flexible with your travel dates and you can usually get cheaper options
Reasons to book your flights to Washington from Ontario with Wotif
Wotif is a super-easy way to find the best flight for you to Washington. Get more bang for your buck on flight and hotel or car rental combos and download the free Wotif app to tap into exclusive deals. Book now with Wotif and have a great flight!
Great places to stay after flight from Ontario to Washington
Reviewed on 3 Jul. 2025
Reviewed on 5 Jul. 2025
Reviewed on 18 Jun. 2025
Discover top hotels, vacation package, cheap car rental deals and more with Wotif!
Other Flight Destinations
Related Carriers
^Savings based on all package bookings made with Flight + Hotel on Wotif.com from , as compared to the price of the same components booked separately. Savings will vary based on origin/destination, length of trip, stay dates and selected travel supplier(s). Savings not available on all packages.