AED610 Cheap Flights from Ontario (ONT) to Washington (IAD)

View AED610 flight on Thu, 27 November 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Washington Dulles Intl. Airport (IAD)

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Cheap Flights from Ontario to Washington (ONT-IAD)

Prices were available within the past 7 days and start at AED610 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

Is it cheaper to buy a plane ticket from ONT to Washington Dulles Intl. Airport (IAD) last minute?
Booking your flight from Ontario Airport to Washington Dulles Intl. Airport (IAD) at the last minute could save you a tidy sum if you happen to find an awesome deal. However, tickets usually don't get cheaper closer to the departure date. If you wait, flights could also be sold out or the best seats taken (we hope you like the middle seat!). If you'd rather play it safe, book well in advance of the date you want to leave. Don't forget that some of the biggest bargains can be found up to a year in advance. If your favorite airline hasn't released tickets yet, check back regularly as deals are constantly updated on Expedia.
What airports do you fly into for Washington from Ontario?
With Washington Dulles Intl. Airport (IAD), Ronald Reagan Washington National Airport (DCA) and Baltimore Washington Intl. Thurgood Marshall Airport (BWI) to select from, making your way from Ontario to Washington is simple. The city's main terminal, Washington Dulles Intl. Airport (IAD), is roughly 40 kilometers west of the center. As well as the price of tickets, consider things like train or bus options from the airport and the distance to your hotel when deciding where to land. Get your Washington vacation off to an exciting start by checking out White House and United States Capitol.
Can I change the date of my flight from ONT to IAD?
Make changes quickly to your Ontario Airport to IAD ticket through the Expedia Trips portal. Before you amend times or dates, review the conditions in your itinerary to see what you're able to do and whether fees apply. Some airlines have a change fee per person, in addition to any difference in fares. However, if you booked in the last 24 hours, you may be able to cancel for free and organize new flights. You can also stop by our Customer Service portal for more info and to chat with our Virtual Agent.

Travel information

Travel information

Origin airport
Los Angeles - Ontario Intl.
Destination airport
Washington Dulles Intl.
Distance
3578 km

Book with confidence

Book with confidence

Ontario to Washington Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Ontario to Washington offer the perfect respite. Not only does exploring Washington provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Ontario to Washington may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of Washington are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to Washington more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Washington is AED610 now!

Ontario to Washington Flights

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Explore a world of travel with Expedia