What is the cheapest airline to fly from Seattle to Williston round-trip?

Cheapflights users have booked flights from Seattle to Williston round-trip from $344. United Airlines is currently priced 28% below the average price you’ll pay for this route.

In terms of precipitation, rainfall in Williston ranges from 0.4 - 2.5 inches per month. June is typically the wettest month, when rainfall can reach 2.5 in. February is typically the driest time to visit Williston when rainfall is around 0.4 in.

If weather is an important factor for your trip to Williston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 10.4 F).

What is the cheapest time of day to fly from SEA to XWA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Williston as you normally would.

Most accurate provider : When it comes to deals on Seattle-Williston flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Williston flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Williston flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Seattle-Williston flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Williston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Seattle to Williston that include hotel bookings?

Yes. In addition to deals on Seattle to Williston flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Seattle to Williston?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Williston.

Can I find deals for business class flights from Seattle to Williston?

Yes. Cheapflights offers flight deals from Seattle to Williston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Find Flights from Seattle to Williston

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Seattle to Williston

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Popular in	February
Cheapest in	December
Average price	$298

Provider with most accurate pricing for Seattle/Tacoma Intl-Williston Basin Intl flight deals.

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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Williston Basin Intl flights.

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Highest demand for flights based on searches. 30% potential increase in price ($208 potential increase over avg. RT price).

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Cheapest flight prices on average. 10% potential price decrease ($47 potential savings vs. average RT price).

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Average for round-trip flights in December 2025

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Compare providers for flights from Seattle to Williston

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Williston in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Seattle-Williston flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Seattle-Williston flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Seattle-Williston flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Seattle-Williston flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Williston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Williston

Have a flexible travel schedule? Discover the best time to fly to Williston from Seattle with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Williston

Read reviews from past customers who have flown United Airlines from Seattle to Williston. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,091 reviews

Reviews

1 / 20

4.0

Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

United Airlines

7.4

Good

9,091 reviews

United Airlines

7.4

Good

9,091 reviews

Reviews

1 / 20

4.0

Okay

Kevin,Dec 2025

BOS - EWR

Seems like every United flight has a delay and it’s always someone else’s fault. Step up and take some accountability

Related info for your journey

What is the cheapest airline to fly from Seattle to Williston round-trip?
Cheapflights users have booked flights from Seattle to Williston round-trip from $344. United Airlines is currently priced 28% below the average price you’ll pay for this route.
Can I find deals for flights from Seattle to Williston that include hotel bookings?
Yes. In addition to deals on Seattle to Williston flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle to Williston?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Williston.
Can I find deals for business class flights from Seattle to Williston?
Yes. Cheapflights offers flight deals from Seattle to Williston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Seattle to Williston

Top airline flying from Seattle to Williston

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$344	Average$446	FlexibilityNo cancel fee	On-time69%

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Cheap flights from Seattle to Williston (SEA - XWA)

Find cheap flights from Seattle to Williston with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Seattle to Williston

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Compare providers for flights from Seattle to Williston

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Williston in December.

Best time to book a flight from Seattle to Williston

Have a flexible travel schedule? Discover the best time to fly to Williston from Seattle with our price prediction graph.

Reviews of airlines servicing Williston

Read reviews from past customers who have flown United Airlines from Seattle to Williston. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Williston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What is the cheapest airline to fly from Seattle to Williston round-trip?

Can I find deals for flights from Seattle to Williston that include hotel bookings?

How can I find direct flights from Seattle to Williston?

Can I find deals for business class flights from Seattle to Williston?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Williston

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Seattle to Williston

100% Free

Book with Flexibility

Travel Smart