$219 Cheap Delta flights Tri-Cities (TRI) to Boise (BOI)

Scoring cheap one-way Delta Air Lines flights from TRI to BOI from $219 on Expedia is a cinch — just filter by “Price (lowest to highest).” Or check out our budget-friendly round-trip fares from $482 for your next adventure.**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.

January is one of the least expensive months to get away to Boise with Delta Air Lines. You could also find fantastic deals on one-way and round-trip fares in December.

Begin your search one to three months ahead of your travel date to score cheap fares on Delta Air Lines flights from Tri-Cities Regional Airport (TRI) to Boise Airport (BOI). You can save 25% by booking your domestic flight 34 to 86 days in advance versus last-minute reservations made 6 to 12 days out. You could also cut costs by buying your fare on a Sunday, as it’s 6% cheaper on average than a Monday, the most expensive day to book.* Time it well, and you can enjoy significant savings on domestic trips.*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.

Use our “Nonstop” filter when looking for direct Delta Air Lines flights from TRI to BOI. You’ll also be able to compare other carriers offering the same nonstop route.

Sort your results by “Early Morning” and “Morning” to see the earliest departures from TRI to BOI. Taking off early means flight cancellations are less likely.**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.

Boise Airport (BOI) is the main Boise gateway for Delta Air Lines flights from Tri-Cities Regional Airport (TRI).

Delta Air Lines makes traveling from TRI to BOI more enjoyable with an excellent in-flight experience and a rewarding loyalty program. You even have the chance to collect points with Delta SkyMiles. Be sure to join Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

In most cases, you can cancel or reschedule your flight, although there may be additional fees if your booking was made over 24 hours ago. Need to keep your options open? Make use of Expedia’s “No cancel fee” and “Changes included” filters to find flights that won’t penalize you if you need to alter your plans. To make changes, go to “Trips,” select your flight and click on “Manage Booking” for more details.