Cheap flights from Boise to San Diego from $73

If you are unable to visit San Diego during the month of September, then departing from Boise during the month April is also very affordable. Most momondo users find prices during this month for around $197.

The cheapest day to depart from Boise to San Diego is on a Tuesday. Travelers who choose to depart for San Diego on a Tuesday will often find tickets for as low as $296. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $456. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

The cheapest time of day to fly to San Diego is at noon when flights can be purchased for as low as $301. Flights in the evening are often more expensive with an average ticket price of $334.

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

You are more likely to see cheaper flights to San Diego from Boise when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $258 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Boise for as low as $204 on momondo.

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

You could potentially save up to 2% on your flight if you consider stops on a Boise to San Diego flight.

As of June 2026, prices for Boise to San Diego flights are approximately 20% more expensive when compared to flights at the same time last year.

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

Alaska Airlines, Southwest and Allegiant Air are the top three most popular airlines that fly to San Diego from Boise according to our data. Alaska Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 7 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

As of June 2026, there are 3 flights per day flying from Boise to San Diego. The most common time of day flights depart is 8:00AM, with 58% of flights taking off at noon.

As of June 2026, 22 flights take off from Boise and land in San Diego each week. The most common flight departure day for this route is Fri, with 23% of weekly flights taking off on this day.