Cheap flights from San Diego to Boise from $80

The month of February is, on average, the cheapest month to fly to Boise from San Diego, with most prices found around $191. If you aren’t able to travel during the month of February, then book flights to Boise from San Diego during September instead. Flights to Boise in September, while not as cheap as those in February, still average around $222.

Our data shows that Saturday is the least expensive day to fly to Boise. Tickets to fly out on this day can be as low as $247. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $347. These prices are subject to change though, so be sure to set up a Price Alert for flights to Boise.

Our data shows that the cheapest San Diego to Boise flights are usually those with departure times at noon. Our users have found flights to Boise at noon for as low as $247. In the morning is when there is more demand to fly to Boise, so prices are often more expensive at around $310 per ticket.

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

You are more likely to see cheaper flights to Boise from San Diego when booking weeks ahead of your departure date. In general, you can expect to find flights to Boise for around $278 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boise from San Diego for as low as $215 on momondo.

United Airlines, Alaska Airlines, and Delta are the most popular carriers operating from San Diego to Boise Air Term. Gowen Fld

Alaska Airlines, Allegiant Air and Southwest are the top three most popular airlines that fly to Boise from San Diego according to our data. Alaska Airlines is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Boise. Keep in mind that there are 6 different airlines that fly to Boise on a routine basis, so you have a few additional options to choose from.

3 flights are operational daily from San Diego to Boise as of May 2026. The most popular departure time for this route is 9:00AM, with 43% of flights per day taking off in the evening.

The number of flights available between San Diego and Boise is 25 per week as of May 2026. The most frequent departure day is Fri, with 24% of weekly flights leaving on this day.