$220 Cheap Delta flights Boise (BOI) to Williston (XWA)

Set the “Price (lowest to highest)” filter on Expedia to find cheap Delta Air Lines round-trip flights from $244 from BOI to XWA. Affordable one-way fares from $220 are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Delta Air Lines flights to Williston are usually more affordable in the quieter months of February and December. Whether you’re after a one-way or round-trip ticket, you could score a better deal then.

Look for affordable Delta Air Lines flights from Boise Airport (BOI) to Basin Intl. Airport (XWA) one to three months before your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and journey, the best day of the week to book a domestic flight is generally Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

To see if there’s a direct trip from BOI to XWA with Delta Air Lines or other carriers, check the “Nonstop” box when searching for tickets.

Find Delta Air Lines’s earliest flights from BOI to XWA by checking our “Early Morning” and “Morning” filters. Not only will you arrive sooner, early departures are also 20% less likely to be canceled.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Delta Air Lines flights from Boise Airport (BOI) to Williston come in to Basin Intl. Airport (XWA). This is the main gateway here.

Delta Air Lines makes flying from BOI to XWA enjoyable with a rewarding loyalty program and an excellent in-flight experience. You could even start collecting points with Delta SkyMiles. Don’t forget to join Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are generally free within 24 hours of making your booking, but your airline may charge a fee after that time. For more information about altering your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the flexibility to change your itinerary without additional charges, apply the “No cancel fee” or “Changes included” filter when planning your next adventure.