Cheap flights from San Francisco to San Diego from £43

If you don’t want to visit San Diego in July, then you should wait until March to fly from San Francisco, when ticket prices are also cheap, with an average price of £100.

The cheapest day to depart from San Francisco to San Diego is on a Monday when prices can be found for as low as £66. Flights from San Francisco to San Diego on a Friday will generally be more expensive and average around £216. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the morning is the cheapest time of day to fly from San Francisco to San Diego when you can find flight prices for as low as £120. Flying to San Diego in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at midday because they tend to be around £148. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 £126 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 £89 on momondo.

There are 3 cabin classes 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.

Historically, on average around 21% 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 118 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening 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 15% of their flights experiencing any sort of delay.

The number of flights available between San Francisco and San Diego is 47 per day as of February 2026. The most frequent departure time is 17:00, with 39% of daily flights leaving in the afternoon.

As of February 2026, there are 332 flights per week flying from San Francisco to San Diego. The most common day of the week flights depart is Fri, with 20% of flights taking off on this day.