$265 Cheap Flights from St. Louis (STL) to Williston (XWA)

View $265 flight on Sun, Aug 31, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Williston, ND (XWA-Basin Intl.)

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Cheap Flights from St. Louis to Williston (STL-XWA)

Prices were available within the past 7 days and start at $265 for one-way flights and $248 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Aug 27 - Wed, Sep 3
STL
St. Louis
XWA
Williston
$248 Roundtrip, found 1 day ago
$248
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Aug 27 from St. Louis to Williston, returning Wed, Sep 3, priced at $248 found 1 day ago
Delta
Mon, Sep 8 - Thu, Sep 18
STL
St. Louis
XWA
Williston
$254 Roundtrip, found 2 days ago
$254
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Sep 8 from St. Louis to Williston, returning Thu, Sep 18, priced at $254 found 2 days ago
Delta
Wed, Nov 19 - Sun, Dec 7
STL
St. Louis
XWA
Williston
$263 Roundtrip, found 6 days ago
$263
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Nov 19 from St. Louis to Williston, returning Sun, Dec 7, priced at $263 found 6 days ago
Delta
Mon, Sep 8 - Fri, Sep 19
STL
St. Louis
XWA
Williston
$298 Roundtrip, found 2 days ago
$298
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Sep 8 from St. Louis to Williston, returning Fri, Sep 19, priced at $298 found 2 days ago
United
Tue, Oct 21 - Tue, Oct 28
STL
St. Louis
XWA
Williston
$317 Roundtrip, found 6 days ago
$317
Roundtrip
found 6 days ago
Select United flight, departing Tue, Oct 21 from St. Louis to Williston, returning Tue, Oct 28, priced at $317 found 6 days ago
Delta
Wed, Aug 27 - Wed, Sep 3
STL
St. Louis
XWA
Williston
$318 Roundtrip, found 1 day ago
$318
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Aug 27 from St. Louis to Williston, returning Wed, Sep 3, priced at $318 found 1 day ago
Delta
Mon, Sep 8 - Sun, Sep 14
STL
St. Louis
XWA
Williston
$322 Roundtrip, found 2 days ago
$322
Roundtrip
found 2 days ago
Select Delta flight, departing Mon, Sep 8 from St. Louis to Williston, returning Sun, Sep 14, priced at $322 found 2 days ago
Delta
Thu, Sep 11 - Sat, Sep 13
STL
St. Louis
XWA
Williston
$324 Roundtrip, found 2 days ago
$324
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Sep 11 from St. Louis to Williston, returning Sat, Sep 13, priced at $324 found 2 days ago
Delta
Wed, Oct 22 - Sat, Oct 25
STL
St. Louis
XWA
Williston
$327 Roundtrip, found 6 days ago
$327
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Oct 22 from St. Louis to Williston, returning Sat, Oct 25, priced at $327 found 6 days ago
United
Wed, Aug 20 - Tue, Aug 26
STL
St. Louis
XWA
Williston
$327 Roundtrip, found 5 days ago
$327
Roundtrip
found 5 days ago
Select United flight, departing Wed, Aug 20 from St. Louis to Williston, returning Tue, Aug 26, priced at $327 found 5 days ago

Find the cheapest month to fly from St. Louis (STL) to Williston (XWA)

May is typically the cheapest month to fly

From $248 - $608 per traveler.

Graph displaying average flight prices per month

Flights from St. Louis (STL) to Williston (XWA)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Basin Intl.
Airlines serving
Delta, United
Roundtrip price
$248
Distance
936 mi

St. Louis to Williston Flights

The cheapest times to fly from St. Louis to Williston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Williston are during the month of August. You can find some of the cheapest flights from St. Louis to Williston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Williston

Sunday is one of the best days to book for cheap flights from St. Louis to Williston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Williston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Williston in 2025. You can also book with separate airlines for your outbound and return journeys, from $265 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Williston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Williston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Basin Intl. Airport (XWA) cost?
Secure a cheap one-way flight from $265 or cheap return flight from $248 from Lambert-St. Louis Intl. Airport (STL) to Basin Intl. Airport (XWA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Basin Intl. Airport (XWA)?
Traveling in August is a good way to save, as it's the cheapest month for flights between STL and XWA. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Basin Intl. Airport (XWA)?
To find the cheapest airline that'll fly you from STL to XWA, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Basin Intl. Airport (XWA)?
There are no daily nonstop flights available from Lambert-St. Louis Intl. Airport (STL) to Basin Intl. Airport (XWA). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be cruising above the clouds in no time at all.
What day of the week has the most flights from STL to XWA?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Basin Intl. Airport (XWA)?
To avoid potential delays on the Lambert-St. Louis Intl. Airport (STL) to Basin Intl. Airport (XWA) route, aim to fly before 3 PM. Departures after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Basin Intl. Airport (XWA) last-minute?
Waiting until right before your break to book your flight from STL to XWA generally means paying more. While you may find some last-minute deals, they aren't always guaranteed. Be flexible with your travel plans for the best chance of landing a bargain.
Is it cheaper to book a STL to XWA flight and hotel package?
You'll generally save money by booking a STL to XWA flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one convenient place. Once you've selected your ideal flights and accommodations, you can add extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Basin Intl. Airport (XWA)?
Typically, you're able to cancel or reschedule your STL to XWA flight. However, there may be additional charges, especially if you booked more than 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you'd like further information, go to our Customer Service portal.

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*Available to One Key members.