Cheap flights from California to Idaho from $70

In general, April is the cheapest month to fly from California to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $281. If you don’t want to visit Idaho in April, then you should wait until January to fly from California, when ticket prices are also cheap, with an average price of $300.

Our data shows that Friday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $297. On the other hand, Sunday is the most expensive day to depart from California because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $410.

According to our data, the cheapest time of day to fly to Idaho is in the afternoon. momondo users have found flights departing from California to Idaho in the afternoon for as low as $226. 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 $354 per ticket.

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

You are more likely to see cheaper flights to Idaho from California when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $316 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from California for as low as $252 on momondo.

There are 4 cabin classes available to choose from on California to Idaho flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

Alaska Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Idaho from California according to our data. Alaska Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 9 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

As of September 2026, there are 48 flights per day flying from California to Idaho. The most common time of day flights depart is 7:00PM, with 48% of flights taking off in the evening.

As of September 2026, 342 flights take off from California and land in Idaho each week. The most common flight departure day for this route is Sun, with 18% of weekly flights taking off on this day.