Cheap flights from Phoenix to Boise from $90

The month of August is, on average, the cheapest month to fly to Boise from Phoenix, with most prices found around $78. If you aren’t able to travel during the month of August, then book flights to Boise from Phoenix during June instead. Flights to Boise in June, while not as cheap as those in August, still average around $81.

Our data shows that Tuesday is the least expensive day to fly to Boise. Tickets to fly out on this day can be as low as $244. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $325. 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 Phoenix to Boise flights are usually those with departure times in the afternoon. Our users have found flights to Boise in the afternoon for as low as $207. At noon is when there is more demand to fly to Boise, so prices are often more expensive at around $282 per ticket.

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

You are more likely to see cheaper flights to Boise from Phoenix when booking weeks ahead of your departure date. In general, you can expect to find flights to Boise for around $254 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boise from Phoenix for as low as $192 on momondo.

Frontier, Delta, and Alaska Airlines are the most popular carriers operating from Phoenix to Boise Air Term. Gowen Fld

American Airlines, Southwest and Alaska Airlines are the top three most popular airlines that fly to Boise from Phoenix according to our data. American Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Boise. Keep in mind that there are 6 different airlines that fly to Boise on a routine basis, so you have a few additional options to choose from.

As of May 2026, 6 flights take off from Phoenix and land in Boise each day. The most common flight departure time for this route is 2:00PM, with 47% of daily flights taking off in the afternoon.

The number of flights available between Phoenix and Boise is 44 per week as of May 2026. The most frequent departure day is Sun, with 20% of weekly flights leaving on this day.