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

View $265 flight on Wed, Oct 22, 2025Opens in a new window

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

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

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
Tue, Dec 2 - Sat, Dec 6
XWA
Williston
STL
St. Louis
$248 Roundtrip, found 6 days ago
$248
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Dec 2 from Williston to St. Louis, returning Sat, Dec 6, priced at $248 found 6 days ago
Delta
Mon, Sep 29 - Tue, Oct 7
XWA
Williston
STL
St. Louis
$254 Roundtrip, found 6 days ago
$254
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Sep 29 from Williston to St. Louis, returning Tue, Oct 7, priced at $254 found 6 days ago
United
Wed, Aug 27 - Wed, Sep 3
XWA
Williston
STL
St. Louis
$263 Roundtrip, found 6 days ago
$263
Roundtrip
found 6 days ago
Select United flight, departing Wed, Aug 27 from Williston to St. Louis, returning Wed, Sep 3, priced at $263 found 6 days ago
United
Wed, Aug 27 - Wed, Sep 3
XWA
Williston
STL
St. Louis
$269 Roundtrip, found 6 days ago
$269
Roundtrip
found 6 days ago
Select United flight, departing Wed, Aug 27 from Williston to St. Louis, returning Wed, Sep 3, priced at $269 found 6 days ago
United
Wed, Aug 27 - Wed, Sep 3
XWA
Williston
STL
St. Louis
$284 Roundtrip, found 6 days ago
$284
Roundtrip
found 6 days ago
Select United flight, departing Wed, Aug 27 from Williston to St. Louis, returning Wed, Sep 3, priced at $284 found 6 days ago
Delta
Wed, Dec 3 - Sat, Dec 6
XWA
Williston
STL
St. Louis
$298 Roundtrip, found 6 days ago
$298
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Dec 3 from Williston to St. Louis, returning Sat, Dec 6, priced at $298 found 6 days ago
United
Wed, Aug 27 - Wed, Sep 3
XWA
Williston
STL
St. Louis
$300 Roundtrip, found 6 days ago
$300
Roundtrip
found 6 days ago
Select United flight, departing Wed, Aug 27 from Williston to St. Louis, returning Wed, Sep 3, priced at $300 found 6 days ago
United
Wed, Aug 27 - Wed, Sep 3
XWA
Williston
STL
St. Louis
$308 Roundtrip, found 6 days ago
$308
Roundtrip
found 6 days ago
Select United flight, departing Wed, Aug 27 from Williston to St. Louis, returning Wed, Sep 3, priced at $308 found 6 days ago
United
Wed, Aug 27 - Wed, Sep 3
XWA
Williston
STL
St. Louis
$313 Roundtrip, found 6 days ago
$313
Roundtrip
found 6 days ago
Select United flight, departing Wed, Aug 27 from Williston to St. Louis, returning Wed, Sep 3, priced at $313 found 6 days ago
Delta
Wed, Oct 1 - Sun, Oct 5
XWA
Williston
STL
St. Louis
$318 Roundtrip, found 6 days ago
$318
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Oct 1 from Williston to St. Louis, returning Sun, Oct 5, priced at $318 found 6 days ago
Flights from Williston (XWA) to St. Louis (STL)
Origin airport
Basin Intl.
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
$248
Distance
936 mi

Williston to St. Louis Flights

The cheapest times to fly from Williston to St. Louis

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 Williston to St. Louis are during the month of December. You can find some of the cheapest flights from Williston to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Williston to St. Louis: 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 Williston to St. Louis

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 Williston to St. Louis 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 Williston to St. Louis 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 Williston to St. Louis 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 Basin Intl. Airport (XWA) to Lambert-St. Louis Intl. Airport (STL) cost?
Get a cheap one-way flight from $265 or cheap return flight from $248 from Basin Intl. Airport (XWA) to Lambert-St. Louis Intl. Airport (STL) 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 Basin Intl. Airport (XWA) to Lambert-St. Louis Intl. Airport (STL)?
Traveling in December may help you find better deals, as it's the cheapest month for flights between XWA and STL. You'll typically find the lowest prices during off-peak months.
What is the cheapest airline that flies from Basin Intl. Airport (XWA) to Lambert-St. Louis Intl. Airport (STL)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest XWA to STL flight.
How many flights per day from Basin Intl. Airport (XWA) to Lambert-St. Louis Intl. Airport (STL)?
There are no daily direct flights available from Basin Intl. Airport (XWA) to Lambert-St. Louis Intl. Airport (STL). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way in no time.
What day of the week has the most flights from XWA to STL?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change based on a number of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Basin Intl. Airport (XWA) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the Basin Intl. Airport (XWA) to Lambert-St. Louis Intl. Airport (STL) route, aim to fly before 3 PM. Departures after this hour are 22% more likely to be 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 Basin Intl. Airport (XWA) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Holding off until just before your departure to book a flight from XWA to STL generally means paying more. While you may come across some last-minute discounts, there's no guarantee. Be flexible with your itinerary for the best chance of scoring a bargain.
Is it cheaper to book a XWA to STL flight and hotel package?
Opting for a XWA to STL flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip in one place. Select from our extensive range of accommodations and then add flights, car rentals and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Basin Intl. Airport (XWA) to Lambert-St. Louis Intl. Airport (STL)?
If you reserved your XWA to STL flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you want more information.

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*Available to One Key members.