$233 Cheap Flights from Pasco (PSC) to Williston (XWA)

View $233 flight on Wed, Dec 31, 2025Opens in a new window

Popular airlines from Tri-Cities Airport (PSC) to Williston, ND (XWA-Basin Intl.)

Cheap Flights from Pasco to Williston (PSC-XWA)

Prices were available within the past 7 days and start at $233 for one-way flights and $374 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Oct 3 - Sat, Oct 4
PSC
Pasco
XWA
Williston
$374 Roundtrip, found 2 days ago
$374
Roundtrip
found 2 days ago
Select United flight, departing Fri, Oct 3 from Pasco to Williston, returning Sat, Oct 4, priced at $374 found 2 days ago
Delta
Fri, Oct 3 - Sat, Oct 4
PSC
Pasco
XWA
Williston
$389 Roundtrip, found 2 days ago
$389
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Oct 3 from Pasco to Williston, returning Sat, Oct 4, priced at $389 found 2 days ago
United
Fri, Oct 3 - Sat, Oct 4
PSC
Pasco
XWA
Williston
$444 Roundtrip, found 2 days ago
$444
Roundtrip
found 2 days ago
Select United flight, departing Fri, Oct 3 from Pasco to Williston, returning Sat, Oct 4, priced at $444 found 2 days ago
Delta
Fri, Oct 3 - Sat, Oct 4
PSC
Pasco
XWA
Williston
$449 Roundtrip, found 2 days ago
$449
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Oct 3 from Pasco to Williston, returning Sat, Oct 4, priced at $449 found 2 days ago
United
Fri, Oct 3 - Sat, Oct 4
PSC
Pasco
XWA
Williston
$479 Roundtrip, found 2 days ago
$479
Roundtrip
found 2 days ago
Select United flight, departing Fri, Oct 3 from Pasco to Williston, returning Sat, Oct 4, priced at $479 found 2 days ago
Delta
Tue, Sep 30 - Mon, Oct 6
PSC
Pasco
XWA
Williston
$502 Roundtrip, found 2 days ago
$502
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Sep 30 from Pasco to Williston, returning Mon, Oct 6, priced at $502 found 2 days ago
Delta
Tue, Sep 30 - Tue, Oct 7
PSC
Pasco
XWA
Williston
$508 Roundtrip, found 2 days ago
$508
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Sep 30 from Pasco to Williston, returning Tue, Oct 7, priced at $508 found 2 days ago
Delta
Fri, Oct 3 - Sat, Oct 4
PSC
Pasco
XWA
Williston
$512 Roundtrip, found 2 days ago
$512
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Oct 3 from Pasco to Williston, returning Sat, Oct 4, priced at $512 found 2 days ago
Delta
Tue, Sep 30 - Sat, Oct 4
PSC
Pasco
XWA
Williston
$523 Roundtrip, found 2 days ago
$523
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Sep 30 from Pasco to Williston, returning Sat, Oct 4, priced at $523 found 2 days ago
United
Fri, Oct 3 - Sat, Oct 4
PSC
Pasco
XWA
Williston
$533 Roundtrip, found 2 days ago
$533
Roundtrip
found 2 days ago
Select United flight, departing Fri, Oct 3 from Pasco to Williston, returning Sat, Oct 4, priced at $533 found 2 days ago
Flights from Pasco (PSC) to Williston (XWA)
Origin airport
Tri-Cities
Destination airport
Basin Intl.
Roundtrip price
$373
Distance
732 mi

Pasco to Williston Flights

The cheapest times to fly from Pasco 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 Pasco to Williston are during the month of October. You can find some of the cheapest flights from Pasco to Williston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Pasco to Williston

Sunday is one of the best days to book for cheap flights from Pasco 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 Pasco 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 Pasco to Williston in 2025. You can also book with separate airlines for your outbound and return journeys, from $233 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 Pasco 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 Pasco 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 Tri-Cities Airport (PSC) to Basin Intl. Airport (XWA) cost?
Secure a cheap one-way flight from $233 or cheap return flight from $374 from Tri-Cities Airport (PSC) 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 Tri-Cities Airport (PSC) to Basin Intl. Airport (XWA)?
October is the cheapest month to fly from PSC to XWA. Traveling outside of peak seasons is often the key to finding better fares.
What is the cheapest airline that flies from Tri-Cities Airport (PSC) to Basin Intl. Airport (XWA)?
To find the cheapest airline flying from PSC to XWA, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Tri-Cities Airport (PSC) to Basin Intl. Airport (XWA)?
You'll have to catch a flight with a layover when traveling from Tri-Cities Airport (PSC) to Basin Intl. Airport (XWA). There are no daily direct flights on this route. However, just filter your search to include one or two stops to find the best option for your trip.
What day of the week has the most flights from PSC to XWA?
Friday is usually the busiest day for flights, while Tuesday is often the quietest.* Remember that flight schedules can vary based on a number of factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Tri-Cities Airport (PSC) to Basin Intl. Airport (XWA)?
To reach Basin Intl. Airport (XWA) on time, choose a flight that takes off from Tri-Cities Airport (PSC) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Tri-Cities Airport (PSC) to Basin Intl. Airport (XWA) last-minute?
Holding off until just before your departure to book a ticket from PSC to XWA often results in higher prices. Although you may find some last-minute offers, they aren't always guaranteed. Be flexible with your travel plans for the best chance of snagging a bargain.
Is it cheaper to book a PSC to XWA flight and hotel package?
Compared with arranging hotels and flights separately, booking a PSC to XWA flight and hotel package with Expedia could result in significant savings. Better still, having everything in one convenient place takes the hassle out of travel planning. Simply secure your flights and choose from our extensive range of hotels, then tailor your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Tri-Cities Airport (PSC) to Basin Intl. Airport (XWA)?
If you booked your PSC to XWA flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket 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 for further details.

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*Available to One Key members.