Cheap flights from the United Kingdom to San Diego from £312

If you don’t want to visit San Diego in February, then you should wait until January to fly from United Kingdom, when ticket prices are also cheap, with an average price of £561.

The cheapest day to depart from United Kingdom to San Diego is on a Monday when prices can be found for as low as £648. Flights from United Kingdom to San Diego on a Sunday will generally be more expensive and average around £744. 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 United Kingdom to San Diego when you can find flight prices for as low as £682. 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 £736. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from London Heathrow to San Diego for the best United Kingdom - San Diego flight prices

You are more likely to see cheaper flights to San Diego from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around £698 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 United Kingdom for as low as £622 on momondo.

There are 4 cabin classes available to choose from on United Kingdom to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

JetBlue, United Airlines, and British Airways are the most popular carriers operating from United Kingdom to San Diego

British Airways, Virgin Atlantic and United Airlines are the top three most popular airlines that fly to San Diego from United Kingdom according to our data. British Airways is the first choice among our users, with 68% of people opting to fly with this airline when travelling to San Diego. Keep in mind that there are 10 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 16% of flights between United Kingdom and San Diego have experienced a delay on any given week. The average delay length over the past 12 months has been 147 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.

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

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

As of August 2026, 9 flights take off from United Kingdom and land in San Diego each day. The most common flight departure time for this route is 14:00, with 63% of daily flights taking off in the afternoon.

63 flights are operational weekly from United Kingdom to San Diego as of August 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.