$243 Cheap Flights from Williston (XWA) to Pasco (PSC)

View $243 flight on Wed, Jan 21, 2026Opens in a new window

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

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Cheap Flights from Williston to Pasco (XWA-PSC)

Prices were available within the past 7 days and start at $243 for one-way flights and $263 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Tue, Feb 3 - Sun, Feb 8
XWA
Williston
PSC
Pasco
$263 Roundtrip, found 5 days ago
$263
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Feb 3 from Williston to Pasco, returning Sun, Feb 8, priced at $263 found 5 days ago
Delta
Sat, Jan 31 - Sun, Feb 8
XWA
Williston
PSC
Pasco
$268 Roundtrip, found 5 days ago
$268
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Jan 31 from Williston to Pasco, returning Sun, Feb 8, priced at $268 found 5 days ago
Delta
Thu, Jan 29 - Sun, Feb 1
XWA
Williston
PSC
Pasco
$278 Roundtrip, found 3 hours ago
$278
Roundtrip
found 3 hours ago
Select Delta flight, departing Thu, Jan 29 from Williston to Pasco, returning Sun, Feb 1, priced at $278 found 3 hours ago
Delta
Tue, Feb 3 - Sat, Feb 7
XWA
Williston
PSC
Pasco
$298 Roundtrip, found 5 days ago
$298
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Feb 3 from Williston to Pasco, returning Sat, Feb 7, priced at $298 found 5 days ago
Delta
Sat, Jan 31 - Sat, Feb 7
XWA
Williston
PSC
Pasco
$303 Roundtrip, found 5 days ago
$303
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Jan 31 from Williston to Pasco, returning Sat, Feb 7, priced at $303 found 5 days ago
Delta
Wed, Feb 4 - Sat, Feb 7
XWA
Williston
PSC
Pasco
$303 Roundtrip, found 5 days ago
$303
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Feb 4 from Williston to Pasco, returning Sat, Feb 7, priced at $303 found 5 days ago
Delta
Sat, Jan 31 - Fri, Feb 6
XWA
Williston
PSC
Pasco
$313 Roundtrip, found 5 days ago
$313
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Jan 31 from Williston to Pasco, returning Fri, Feb 6, priced at $313 found 5 days ago
Delta
Thu, Jan 29 - Sun, Feb 1
XWA
Williston
PSC
Pasco
$348 Roundtrip, found 3 hours ago
$348
Roundtrip
found 3 hours ago
Select Delta flight, departing Thu, Jan 29 from Williston to Pasco, returning Sun, Feb 1, priced at $348 found 3 hours ago
United
Thu, Jan 22 - Sun, Jan 25
XWA
Williston
PSC
Pasco
$352 Roundtrip, found 13 hours ago
$352
Roundtrip
found 13 hours ago
Select United flight, departing Thu, Jan 22 from Williston to Pasco, returning Sun, Jan 25, priced at $352 found 13 hours ago
Delta
Tue, Feb 3 - Thu, Feb 12
XWA
Williston
PSC
Pasco
$382 Roundtrip, found 5 days ago
$382
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Feb 3 from Williston to Pasco, returning Thu, Feb 12, priced at $382 found 5 days ago
Flights from Williston (XWA) to Pasco (PSC)
Origin airport
Basin Intl.
Destination airport
Tri-Cities
Airlines serving
Delta, United
Roundtrip price
$263
Distance
732 mi

Williston to Pasco Flights

The cheapest times to fly from Williston to Pasco

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

 

The best time to book a flight from Williston to Pasco

Sunday is one of the best days to book for cheap flights from Williston to Pasco: 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 Pasco

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 Pasco in 2026. You can also book with separate airlines for your outbound and return journeys, from $243 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 Pasco 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 Pasco 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 Tri-Cities Airport (PSC) cost?
Get a cheap one-way flight from $243 or cheap return flight from $263 from Basin Intl. Airport (XWA) to Tri-Cities Airport (PSC) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Basin Intl. Airport (XWA) to Tri-Cities Airport (PSC)?
The cheapest month to fly from XWA to PSC is February, when demand is low. Off-peak season is often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from Basin Intl. Airport (XWA) to Tri-Cities Airport (PSC)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest XWA to PSC flight.
How many flights per day from Basin Intl. Airport (XWA) to Tri-Cities Airport (PSC)?
You'll have to catch a flight with a layover if you're traveling from Basin Intl. Airport (XWA) to Tri-Cities Airport (PSC). 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 XWA to PSC?
Usually you'll find the widest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can vary depending on the airline, time of year 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 Basin Intl. Airport (XWA) to Tri-Cities Airport (PSC)?
Choose a flight from Basin Intl. Airport (XWA) to Tri-Cities Airport (PSC) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures after this time have a 22% higher chance of being canceled, on average.**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 Tri-Cities Airport (PSC) last-minute?
Booking your plane ticket from XWA to PSC right before your journey is generally more expensive. But if there's some wiggle room with your travel dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a XWA to PSC flight and hotel package?
You can save money by booking a XWA to PSC flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. Once you've chosen your preferred accommodations and flights, you can add extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Basin Intl. Airport (XWA) to Tri-Cities Airport (PSC)?
It's generally possible to cancel or reschedule your XWA to PSC flight. However, if it's been more than 24 hours since booking, additional fees may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.