CA $531 Cheap Flights from Ontario (ONT) to Williston (XWA)

View CA $531 flight on Tue, Feb 17, 2026Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Williston, ND (XWA-Basin Intl.)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap flights from Ontario (ONT) to Williston (XWA)

Prices were available within the past 7 days and start at CA $531 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flight from Ontario to Williston (ONT - XWA) route information
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Basin Intl.
Distance
1940 km

Los Angeles to Williston Flights

The easy way to book your flights from Ontario to Williston 

With Expedia, it’s simple to find and book flights to Williston from Ontario whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 2 airlines that cover this route. There are nonstop flights to Basin Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Ontario to Williston today, tomorrow, or this week.  

 

Save dollars with cheap flights from Los Angeles - Ontario Intl., ONT to Basin Intl., XWA 

Sort your search results by price to find great deals on your flight from Ontario to Williston—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Williston from Ontario currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Williston  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Williston from Ontario 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Williston with Expedia today.

Frequently asked questions

How much is a flight from ONT to Williston Basin Intl. Airport?
Round-trip journeys between Los Angeles - Ontario Intl. Airport (ONT) and Basin Intl. Airport (XWA) start from . This is based on fares quoted within the last 7 days on Expedia for flights departing within the next year — book now so you don't miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Los Angeles - Ontario Intl. Airport (ONT) to XWA?
Most flights can be cancelled online, but every air carrier has a different set of terms and conditions. If you do decide to cancel your flight, go to our Customer Service Portal and follow the instructions.
How do I find cheap flights from Ontario Airport to Williston Basin Intl. Airport that have flexible change policies?
Flights from Los Angeles - Ontario Intl. Airport (ONT) to Williston Basin Intl. Airport offering flexible change policies are available from several carriers. Simply use our "No change fees" filter during your search. You'll only need to pay the cost difference between flights, without any extra fees to worry about.
How many hours is the flight from ONT to Basin Intl. Airport (XWA)?
There are plenty of ways to make the 4 hours and 19 minutes between ONT and XWA go by quicker. Be productive and organize your camera roll or delete all those backed-up emails. A good snooze also helps pass the time!
How far is the flight from Los Angeles - Ontario Intl. Airport (ONT) to XWA?
Expect to be up above the clouds for a while, as the flight distance between Ontario Airport and Basin Intl. Airport (XWA) is 1,950 kilometres. Set up a playlist of your favourite songs before leaving home to keep yourself entertained during the flight.
Which airlines fly direct from Ontario Airport to Basin Intl. Airport (XWA)?
Currently, no airlines offer direct flights from ONT to XWA. You'll have to book a flight with at least one stop. To get the best connections and price, lock in your fare ahead of time.
Are ONT to XWA flight tickets cheaper when they're purchased at the last minute?
Flight tickets from Ontario Airport to XWA are available up to 12 months before departure on Expedia. And although you may pick up great last-minute deal, it's never a sure thing. Also, booking your flights in advance means you'll have more choices — and you can avoid getting trapped in the dreaded middle seat! We're always updating our fares to bring you the biggest bargains, so check back often for all the latest specials.

Explore a world of travel with Expedia

*Available to Expedia members.