Title: CA $426 Cheap Flights from St. Louis (STL) to Williston (XWA) - Expedia.ca ![Fort Union Trading Post National Historic Site](https://images.trvl-media.com/place/1636/216762a5-d8a6-4666-828a-1f78827c1e83.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/1636/216762a5-d8a6-4666-828a-1f78827c1e83.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # CA $426 Cheap Flights from St. Louis (STL) to Williston (XWA) [View CA $426 flight on Mon, Dec 29, 2025](https://expedia.ca/Flights-Search?trip=oneway&leg1=from:STL,to:XWA,departure:29/12/2025TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:425.50&airProductToken=AQpuCjUIxJgBEgQzOTI3GPJcIMx8KJeFgQMwgIaBAzhFQABYAWoJTUFJTkJBU0lDcghVQVZOQTBCUQo1CMSYARIENDI4ORjMfCDXBSi2h4EDMLqIgQM4RUABWAFqCU1BSU5CQVNJQ3IIVUFWTkEwQlESCggBEAEYASoCREwYASIECAEQASgCKAMoBDAB) - [Roundtrip](?flightType=roundtrip) - [One-way](?flightType=oneway) - [Multi-city](?flightType=multicity) ### Travellers Adults ChildrenAges 2 to 17 InfantsYounger than 2 EconomyPremium economyBusiness classFirst class Leaving from Going to Departing Returning Add a place to stay Add a car Direct flights only ## Popular airlines from Lambert-St. Louis International Airport (STL) to Williston, ND (XWA-Basin Intl.) - ![Delta](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.ca/Flights-Search?leg1=from:stl,to:xwa,departure:28/10/2025TANYT&leg2=from:xwa,to:stl,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![United](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_UA.svg) United [](https://www.expedia.ca/Flights-Search?leg1=from:stl,to:xwa,departure:28/10/2025TANYT&leg2=from:xwa,to:stl,departure:04/11/2025TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"UA"}}]) ![notification illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__notification.svg) ### Be in the know Get alerts if flight prices drop or rise\* ![deals illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__deals.svg) ### Book smarter Save up to 30% on select hotels after you book a flight\* ![trophy illustration](https://a.travel-assets.com/travel-assets-manager/pictogram-bex/light__trophy.svg) ### Earn twice Earn your airline miles on top of our rewards [Sign in](https://www.expedia.ca/login) ## Cheap flights from St. Louis (STL) to Williston (XWA) Prices were available within the past 7 days and start at CA $426 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ## Find the cheapest month to fly from St. Louis (STL) to Williston (XWA) ### May is typically the cheapest month to fly From CA $345 - CA $846 per traveller. Flight from St. Louis to Williston (STL - XWA) route information | Origin airport | Lambert-St. Louis Intl. | | --- | --- | | Destination airport | Basin Intl. | | Distance | 1498 km | ## St. Louis to Williston Flights **The easy way to book your flights from St. Louis to Williston**  With Expedia, it’s simple to find and book flights to Williston from St. Louis whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 3 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 St. Louis to Williston today, tomorrow, or this week.   **Save dollars with cheap flights from Lambert-St. Louis Intl., STL to Basin Intl., XWA**  Sort your search results by price to find great deals on your flight from St. Louis to Williston—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Williston from St. Louis 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 St. Louis**  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 STL to Williston Basin Intl. Airport? > Start packing your suitcase, because round-trip flights between Lambert-St. Louis Intl. Airport (STL) and XWA start from . That's based on fares listed within the last 7 days on Expedia for flights departing within the next year. Prices can move quickly, so book now to lock in the best deal. Prices and availability are subject to change. Additional terms apply. ### Do I need to pay a cancellation fee if I cancel my flight from Lambert Field to Williston Basin Intl. Airport? > Each air carrier has a different set of terms and conditions. If you decide to cancel your vacation, visit our [Customer Service Portal](https://www.expedia.ca/helpcenter). ### How do I find cheap flights from Lambert-St. Louis Intl. Airport (STL) to Basin Intl. Airport (XWA) that have flexible change policies? > Select our "No change fees" filter to find flexible travel options for your flight from Lambert Field to Williston Basin Intl. Airport. This allows you to secure a great deal ahead of time and still have the freedom to reschedule without any extra fees. You'll just need to pay the difference in fare. ### How many hours is the flight from Lambert-St. Louis Intl. Airport (STL) to Basin Intl. Airport (XWA)? > The flight time from STL to Basin Intl. Airport (XWA) is around 4 hours and 10 minutes. Put your earphones in, listen to your favourite playlist and your journey will whiz by. ### How far is the flight from STL to Basin Intl. Airport (XWA)? > It's around 1,500 kilometres from St. Louis to Williston, so you'll be strapped into your seat for a while. Keep yourself occupied by packing things like playing cards (if you're travelling with friends) or the latest bestseller. ### Which airlines fly direct from STL to Williston Basin Intl. Airport? > Direct flights aren't available, so you'll need to make at least one stop between STL and Basin Intl. Airport (XWA). Use the layover time to stretch your legs and enjoy some personal space. ### Are STL to XWA flight tickets cheaper when they're purchased at the last minute? > Flight prices fluctuate, so there are no guarantees. While last-minute deals between Lambert-St. Louis Intl. Airport (STL) and XWA are possible, it's also a good idea to keep an eye on prices well before you fly. In fact, some airlines announce their prices up to a year prior to the departure date. Expedia is constantly updating the best airfare bargains around, so keep checking back and be ready to lock in your seat when the fares dip. ## Explore a world of travel with Expedia - Lodging - Flights - Packages - Cars - Vacation Rental ### Lodging - [5 Star Hotels in Williston](https://www.expedia.ca/5Star-Williston-Hotels.s50-0-d1636.Travel-Guide-Filter-Hotels) - [Hotels near CHI St. Alexius Health - Williston Medical Center](https://www.expedia.ca/CHI-St-Alexius-Health-Williston-Medical-Center-Hotels.0-l553248634341018165-0.Travel-Guide-Filter-Hotels) - [Epping Hotels](https://www.expedia.ca/Epping-Hotels.d6360613.Travel-Guide-Hotels) - [Hotels near Fort Union Trading Post](https://www.expedia.ca/Fort-Union-Trading-Post-Hotels.0-l553248621533115664-0.Travel-Guide-Filter-Hotels) - [Vacation Homes in Springbrook](https://www.expedia.ca/Springbrook-Private-Vacation-Homes.d553248634983382294-aaPrivateVacationHomes.Travel-Guide-Accommodation) - [Aparthotels in Trenton](https://www.expedia.ca/Trenton-Apart-Hotels.d6341419-aaApartHotels.Travel-Guide-Accommodation) - 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