Cheap flights from San Jose, California to San Diego from $66

If you are unable to visit San Diego during the month of September, then departing from San Jose, California during the month August is also very affordable. Most momondo users find prices during this month for around $180.

The cheapest day to depart from San Jose, California to San Diego is on a Saturday. Travelers who choose to depart for San Diego on a Saturday will often find tickets for as low as $252. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $299. 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 $271. Flights in the morning are often more expensive with an average ticket price of $281.

Fly from San Jose to San Diego for the best San Jose - San Diego flight prices

You are more likely to see cheaper flights to San Diego from San Jose, California when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $232 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from San Jose, California for as low as $164 on momondo.

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

Southwest, Alaska Airlines and United Airlines are the top three most popular airlines that fly to San Diego from San Jose, California according to our data. Southwest is the first choice among our users, with 32% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 9 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

Historically, on average around 18% of flights between San Jose and San Diego have experienced a delay on any given week. The average delay length over the past 12 months has been 104 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Alaska Airlines have had the least number of delays on this route over the last 12 months; with about 14% of their flights experiencing any sort of delay.

As of May 2026, there are 15 flights per day flying from San Jose, California to San Diego. The most common time of day flights depart is 12:00PM, with 51% of flights taking off in the afternoon.

105 flights are operational weekly from San Jose, California to San Diego as of May 2026. The most popular departure day for this route is Mon, with 26% of flights per week taking off on this day.