Cheap flights from Denver to Boise from $89

The month of February is, on average, the cheapest month to fly to Boise from Denver, with most prices found around $133. If you aren’t able to travel during the month of February, then book flights to Boise from Denver during January instead. Flights to Boise in January, while not as cheap as those in February, still average around $177.

Our data shows that Thursday is the least expensive day to fly to Boise. Tickets to fly out on this day can be as low as $218. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $362. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boise.

Our data shows that the cheapest Denver to Boise flights are usually those with departure times in the morning. Our users have found flights to Boise in the morning for as low as $267. At noon is when there is more demand to fly to Boise, so prices are often more expensive at around $361 per ticket.

Fly from Denver Intl to Boise Air Term. Gowen Fld for the best Denver Intl - Boise Air Term. Gowen Fld flight prices

You are more likely to see cheaper flights to Boise from Denver when booking weeks ahead of your departure date. In general, you can expect to find flights to Boise for around $268 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boise from Denver for as low as $222 on momondo.

There are 4 cabin classes available to choose from on Denver to Boise flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Frontier and Alaska Airlines are the most popular carriers operating from Denver Intl to Boise Air Term. Gowen Fld

United Airlines, Frontier and Southwest are the top three most popular airlines that fly to Boise from Denver according to our data. United Airlines is the first choice among our users, with 53% of people opting to fly with this airline when traveling to Boise. Keep in mind that there are 4 different airlines that fly to Boise on a routine basis, so you have a few additional options to choose from.

As of October 2026, there are 9 flights per day flying from Denver to Boise. The most common time of day flights depart is 8:00PM, with 44% of flights taking off in the evening.

As of October 2026, 66 flights take off from Denver and land in Boise each week. The most common flight departure day for this route is Wed, with 23% of weekly flights taking off on this day.