Cheap flights from San Jose, California to Idaho from $104

In general, October is the cheapest month to fly from San Jose, California to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $68. If you don’t want to visit Idaho in October, then you should wait until April to fly from San Jose, California, when ticket prices are also cheap, with an average price of $68.

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 $235. On the other hand, Tuesday is the most expensive day to depart from San Jose, California because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $377.

According to our data, the cheapest time of day to fly to Idaho is at noon. momondo users have found flights departing from San Jose, California to Idaho at noon for as low as $232. 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 afternoon is when there is more demand to fly to Idaho, so prices are often more expensive at around $312 per ticket.

Fly from San Jose to Boise Air Term. Gowen Fld for the best San Jose - Idaho flight prices

You are more likely to see cheaper flights to Idaho from San Jose, California when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $282 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from San Jose, California for as low as $167 on momondo.

Delta, Southwest, and Alaska Airlines are the most popular carriers operating from San Jose to Idaho

United Airlines, Alaska Airlines and Southwest are the top three most popular airlines that fly to Idaho from San Jose, California according to our data. United Airlines is the first choice among our users, with 50% 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.

As of May 2026, 2 flights take off from San Jose, California and land in Idaho each day. The most common flight departure time for this route is 7:00PM, with 62% of daily flights taking off in the evening.

As of May 2026, 20 flights take off from San Jose, California and land in Idaho each week. The most common flight departure day for this route is Mon, with 20% of weekly flights taking off on this day.