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

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

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save on select hotels after you book a flight*
    trophy illustration

    Find the right fit

    We search billions of combinations of flights to help you find your next adventure

Frequently asked questions

Is it cheaper to buy a plane ticket from Dulles Intl. Airport to Ontario Airport last minute?
Booking your trip from Dulles Intl. Airport to ONT at the last minute could save you a nice sum if you stumble on an amazing deal. However, tickets generally don't get cheaper as the date of departure nears. If you take a wait-and-see approach, flights could also be booked solid or the best seats taken (because who wants the middle seat?). If you don't want to hedge your bets, book well in advance of your departure date. In fact, Expedia has some of the biggest deals up to a year in advance. If your favorite carrier hasn't released tickets yet, check back regularly as deals are updated on Expedia all the time.
What airports do you fly into for Ontario from Washington?
From Washington, you can reach Ontario via Los Angeles - Ontario Intl. Airport (ONT), John Wayne Airport (SNA) and Long Beach Municipal Airport (LGB). Do some research into which hub works best for you before you make a decision. If you decide on Los Angeles - Ontario Intl. Airport (ONT), it's approximately 5 kilometers east of the downtown area. Use the dollars you save when booking your journey with Expedia to experience the city's well-known attractions, such as Ontario Mills Shopping Mall and Toyota Arena.
Can I change the date of my flight from Washington Dulles Intl. Airport (IAD) to Los Angeles - Ontario Intl. Airport (ONT)?
Make changes quickly to your IAD to Ontario Airport trip via the Expedia Trips portal. Before you make any amendments, read the fare rules in your itinerary to find out what the airline will allow you to do and if fees apply. Some carriers charge a change fee per person, on top of 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 browse our Customer Service portal for more handy information and to connect with our Virtual Agent.

Travel information

Travel information

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

Book with confidence

Book with confidence

Washington to Ontario Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Washington to Ontario offer the perfect respite. Not only does exploring Ontario 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 Washington to Ontario 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 Ontario are only a plane trip away. Book your travel arrangements with us today!

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

Washington to Ontario Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia