Cheap Alaska Airlines flights Boise (BOI) to Denver (DEN)

Apply the “Price (lowest to highest)” filter on Expedia to search for cheap Alaska Airlines round-trip flights from $175 from BOI to DEN. Affordable one-way fares are available as well.**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.

Search for return or one-way flights to Denver in January or November. You could find lower fares with Alaska Airlines during these off-peak travel months.

To find cheap Alaska Airlines fares from Boise Airport (BOI) to Denver Intl. Airport (DEN), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the cost. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip on a Sunday.**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 Alaska Airlines flights from BOI to DEN. It’s also a great way to compare other carriers offering the same direct trip.

Filter your results by “Early Morning” and “Morning” to browse the earliest departures from BOI to DEN. Jetting off early means you’re 20% less likely to experience cancellations.**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.

Catch an Alaska Airlines flight from Boise Airport (BOI) to Denver, and you’ll most likely touch down at Denver Intl. Airport (DEN). This is the airline’s primary hub in this destination.

Taking off from BOI to DEN with Alaska Airlines comes with a range of perks, such as an excellent in-flight experience and top-tier customer service. Plus, when you book through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That’s on top of the Mileage Plan points you can earn with Alaska Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Typically, you can reschedule or cancel your flight, although there may be a charge if you booked over 24 hours ago. Need flexible options? Use Expedia’s “No cancel fee” or “Changes included” filter to find flights that won’t charge extra if you have to alter your plans. To make changes, visit “Trips,” select your flight and click on “Manage Booking” for more details.