Cheap flights from San Francisco to San Diego from €42

The cheapest month to fly to San Diego from San Francisco is in October. Flight prices, which tend to average around €147, are often lower during this time because this is during the off-season. If you’re not able to fly to San Diego in October, then September is your next best option. Flight prices from San Francisco to San Diego during September average around €160.

According to our data, the cheapest time of day to fly to San Diego is at midday. momondo users have found flights departing from San Francisco to San Diego at midday for as low as €170. 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 morning is when there is more demand to fly to San Diego, so prices are often more expensive at around €340 per ticket.

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

You are more likely to see cheaper flights to San Diego from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around €194 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from San Francisco for as low as €138 on momondo.

There is only 1 cabin class available to choose from on San Francisco to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

As of September 2026, prices for San Francisco to San Diego flights are approximately 10% more expensive when compared to flights at the same time last year.

Historically, on average around 29% of flights between San Francisco and San Diego have experienced a delay on any given week. The average delay length over the past 12 months has been 124 minutes.

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

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

According to our data, United Airlines have had the fewest delays on this route over the last 12 months, with about 20% of their flights experiencing any sort of delay.

As of September 2026, there are 65 flights per day flying from San Francisco to San Diego. The most common time of day flights depart is 21:00, with 36% of flights taking off in the afternoon.

459 flights are operational weekly from San Francisco to San Diego as of September 2026. The most popular departure day for this route is Sun, with 18% of flights per week taking off on this day.