CA $239 Cheap Flights from Washington (DCA) to Ontario Intl. Airport (ONT)

Start packing your bags, because round-trip flights from Ronald Reagan Washington National Airport (DCA) to Ontario Airport start from CA $556. That's based on fares advertised within the last 7 days on Expedia for flights departing within the next year. Prices can go up quickly, so book now to nab the best deal. Prices and availability are subject to change. Additional terms apply.

The majority of flights can be cancelled online, but whether or not you incur a fee all comes down to your airline. If you do need to cancel your trip, follow the easy instructions in the Customer Service Portal.

Select our "No change fees" filter to find flexible ticketing options for your flight from DCA to ONT. This allows you to secure a great deal ahead of time and still have the freedom to make changes without any extra fees. Keep in mind that you'll need to cover the fare difference.

It takes roughly 7 hours and 14 minutes to fly from Ronald Reagan Washington National Airport (DCA) to Ontario Airport. But with some music and a magazine or two, the time will go by quicker.

Expect to be cruising at altitude for a while, as the flight distance between National Airport and Ontario Airport is 3,600 kilometres. Put together a playlist of your favourite songs before leaving home to stay entertained during your flight.

Direct flights aren't available, so you'll need to make at least one stop between DCA and Ontario Airport. Take advantage of the layover time to stretch your legs and enjoy some personal space.

Booking your trip from DCA to Los Angeles - Ontario Intl. Airport (ONT) last minute could be your ticket to a great deal. However, it could end up costing a great deal more! If you'd rather play it safe, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to a year in advance. If your preferred air carrier hasn't released tickets yet, check back regularly as deals are updated all the time on Expedia.