Cheap flights from Idaho to San Jose from $66

The month of September is, on average, the cheapest month to fly to San Jose, California from Idaho, with most prices found around $188. If you are unable to visit San Jose, California during the month of September, then departing from Idaho during the month October is also very affordable. Most momondo users find prices during this month for around $197.

On average, the least expensive day to fly to San Jose, California from Idaho is on a Thursday. momondo users have found tickets for Thursday departures for as low as $264. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Idaho to San Jose, California for around $396.

The cheapest time of day to fly to San Jose, California is at noon when flights can be purchased for as low as $278. In the morning is when there is more demand to fly to San Jose, California, so prices are often more expensive at around $303 per ticket.

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

You are more likely to see cheaper flights to San Jose, California from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to San Jose, California for around $282 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Jose, California from Idaho for as low as $157 on momondo.

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

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

United Airlines, Alaska Airlines and Southwest are the top three most popular airlines that fly to San Jose, California from Idaho according to our data. United Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to San Jose, California. Keep in mind that there are 6 different airlines that fly to San Jose, California on a routine basis, so you have a few additional options to choose from.

4 flights are operational daily from Idaho to San Jose, California as of March 2026. The most popular departure time for this route is 9:00AM, with 77% of flights per day taking off at noon.

The number of flights available between Idaho and San Jose, California is 34 per week as of March 2026. The most frequent departure day is Mon, with 18% of weekly flights leaving on this day.