Cheap flights from the United Kingdom to San Diego from $463

If you are unable to visit San Diego during the month of January, then departing from United Kingdom during the month February is also very affordable. Most momondo users find prices during this month for around $774.

The cheapest day to depart from United Kingdom to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $907. If your travel schedule is flexible, try to avoid departing on a Tuesday because tickets tend to average around $1,511. 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 in the morning when flights can be purchased for as low as $1,051. Flights at noon are often more expensive with an average ticket price of $1,272.

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 $992 when searching weeks out. 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 $863 on momondo.

There are 3 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.

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

British Airways, American Airlines and Lufthansa 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 63% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 3 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 139 minutes.

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

Sunday is statistically the day of the week which experiences the fewest number of 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 least number of delays on this route over the last 12 months; with about 16% of their flights experiencing any sort of delay.

As of September 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 2:00PM, with 66% of daily flights taking off in the afternoon.

As of September 2026, 63 flights take off from United Kingdom and land in San Diego each week. The most common flight departure day for this route is Fri, with 16% of weekly flights taking off on this day.