$109 Cheap United flights Los Angeles (LAX) to Boise (BOI)

Make use of the "Price (lowest to highest)" filter on Expedia to search for cheap United Airlines return flights from $177 from LAX to BOI. Affordable one-way options from $109 are also available.**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.

Start searching one to three months ahead of your departure date to find cheap fares on United Airlines flights from Los Angeles Intl. Airport (LAX) to Boise Airport (BOI). You can save 25% by booking your domestic flight 34 to 86 days in advance compared to last-minute reservations made 6 to 12 days out. You could also reduce costs by buying your fare on a Sunday, as it's 6% cheaper on average than a Monday, the most expensive day to book.* Get your timing right, and you can enjoy significant savings on domestic flights.*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.

Jetting off from LAX at 10:15AM UTC-8, the earliest United Airlines flight to BOI arrives at 1:39PM UTC-7. Traveling earlier in the day means you're less likely to encounter cancellations or delays.* Not an early riser? The last United Airlines flight from LAX to BOI departs at 6:54PM UTC-8 and touches down at 10:15PM UTC-7.*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.

Depart from LAX to BOI with United Airlines and you'll enjoy a host of benefits including a rewarding loyalty program. When you book through Expedia as a United Mileage Plus and One Key™ member, you could also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.