Cheap Flights from Washington (IAD) to Ontario (ONT)

Within the past 7 days on Expedia, for flights departing within the next year, the lowest price quoted for a round-trip flight from Washington Dulles Intl. Airport (IAD) to Los Angeles - Ontario Intl. Airport (ONT) was ₹28,073. Cheap tickets don’t last long, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.

The majority of flights can be cancelled online, but each air carrier has different terms and conditions. If you do decide to cancel your flight, check out our Customer Service Portal and follow the instructions.

Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for IAD to ONT flights, you’ll see a “no change fees” filter for you to select.

Expect to be in the air for a while, as the flight distance between Chantilly and Ontario is 3,600 kilometres. Create a playlist of your favourite songs before leaving home to keep yourself entertained during the trip.

You won’t find any airlines operating directly between Dulles Intl. Airport and Los Angeles - Ontario Intl. Airport (ONT), so be prepared to make at least one stop on your journey. A layover, whether short or long, can be a welcome way to break up a trip!

Flight tickets from IAD to Los Angeles - Ontario Intl. Airport (ONT) are available up to a year prior to departure on Expedia. And although you may occasionally score a great last-minute deal, it’s not something you should bank on. Also, booking your flights well in advance means you’ll have more choices — and you can avoid ending up with the dreaded middle seat! We’re constantly updating our fares to bring you the best bargains, so keep checking in for all the latest specials.