Cheap flights from Phoenix Sky Harbor Intl Airport to Idaho from $87

In general, January is the cheapest month to fly from Phoenix Sky Harbor Intl Airport to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $189. If you don’t want to visit Idaho in January, then you should wait until August to fly from Phoenix Sky Harbor Intl Airport, when ticket prices are also cheap, with an average price of $270.

Our data shows that Wednesday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $302. On the other hand, Sunday is the most expensive day to depart from Phoenix Sky Harbor Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $368.

According to our data, the cheapest time of day to fly to Idaho is in the afternoon. momondo users have found flights departing from Phoenix Sky Harbor Intl Airport to Idaho in the afternoon for as low as $279. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the evening is when there is more demand to fly to Idaho, so prices are often more expensive at around $333 per ticket.

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

You are more likely to see cheaper flights to Idaho from Phoenix Sky Harbor Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $299 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from Phoenix Sky Harbor Intl Airport for as low as $251 on momondo.

There are 3 cabin classes available to choose from on Phoenix Sky Harbor Intl Airport to Idaho flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

American Airlines, Delta, and Alaska Airlines are the most popular carriers operating from Phoenix Sky Harbor Intl to Idaho

American Airlines, Southwest and Alaska Airlines are the top three most popular airlines that fly to Idaho from Phoenix Sky Harbor Intl Airport according to our data. American Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 6 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

The number of flights available between Phoenix Sky Harbor Intl Airport and Idaho is 7 per day as of November 2026. The most frequent departure time is 8:00PM, with 42% of daily flights leaving in the evening.

The number of flights available between Phoenix Sky Harbor Intl Airport and Idaho is 54 per week as of November 2026. The most frequent departure day is Mon, with 24% of weekly flights leaving on this day.