Cheap flights from San Jose, California to Idaho from $87

In general, January 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 $157. If you don’t want to visit Idaho in January, then you should wait until February to fly from San Jose, California, when ticket prices are also cheap, with an average price of $186.

Our data shows that Monday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $307. 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 $356.

According to our data, the cheapest time of day to fly to Idaho is in the evening. momondo users have found flights departing from San Jose, California to Idaho in the evening for as low as $307. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At noon is when there is more demand to fly to Idaho, so prices are often more expensive at around $377 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 $311 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 $183 on momondo.

There are 3 cabin classes available to choose from on San Jose, California to Idaho flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

United Airlines, Southwest and Alaska Airlines 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 5 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

As of July 2026, 3 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 73% of daily flights taking off in the evening.

As of July 2026, 22 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 18% of weekly flights taking off on this day.