Question 1

Which airport is the most popular for stopovers for flights between London Heathrow Airport and San Diego?

Accepted Answer

Los Angeles (LAX) was the most common stop: 50% of momondo users choosing one-stop flights on this route connected there.

Question 2

Which stopover airport has the shortest connection time from London Heathrow Airport to San Diego?

Accepted Answer

Seattle (SEA) has the shortest average stopover time for this route: 1h 23m.

Question 3

How many flights depart from London Heathrow Airport to San Diego on average per day?

Accepted Answer

The number of flights available between London Heathrow Airport and San Diego is 6 per day as of December 2025. The most frequent departure time is 12:00, with 100% of daily flights leaving in the afternoon.

Question 4

What is the cheapest airline that flies from London Heathrow to San Diego?

Accepted Answer

Austrian Airlines, Lufthansa, and SWISS are the most popular carriers operating from London Heathrow to San Diego

Question 5

How have London Heathrow Airport to San Diego flight prices changed over time?

Accepted Answer

As of December 2025, prices for London Heathrow Airport to San Diego flights are approximately 9% more expensive when compared to flights at the same time last year.

Question 6

What is the cheapest month to fly to San Diego?

Accepted Answer

If you don’t want to visit San Diego in January, then you should wait until September to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £501.

Question 7

Which airlines fly to San Diego?

Accepted Answer

British Airways, Virgin Atlantic and Lufthansa are the top three most popular airlines that fly to San Diego from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 64% of people opting to fly with this airline when travelling to San Diego. Keep in mind that there are 12 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

Question 8

How far in advance should I book a flight to San Diego?

Accepted Answer

You are more likely to see cheaper flights to San Diego from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around £582 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 London Heathrow Airport for as low as £522 on momondo.

Question 9

What is the most punctual flight time for London to San Diego flights?

Accepted Answer

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.

Question 10

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Tuesday 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.

Question 11

Which stopover airport has the shortest travel time from London Heathrow Airport to San Diego?

Accepted Answer

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 13h 56m.

Question 12

What is the typical price of a round-trip flight between London Heathrow Airport and San Diego?

Accepted Answer

Prices are currently low for flights on this route.Typical prices usually range from £583 to £933.
The lowest price recently found on this route was £543.

Question 13

Which stopover airport offers the lowest fares from London Heathrow Airport to San Diego?

Accepted Answer

Flights via Denver (DEN) offer the lowest average return price of £553.

Question 14

How often are flights from London to San Diego delayed?

Accepted Answer

Historically, on average around 16% of flights between London and San Diego have experienced a delay on any given week. The average delay length over the past 12 months has been 146 minutes.

Question 15

Which airline has the best punctuality record on London to San Diego flights?

Accepted Answer

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.

Question 16

What is the cheapest day to depart on your flight to San Diego?

Accepted Answer

The cheapest day to depart from London Heathrow Airport to San Diego is on a Tuesday when prices can be found for as low as £556. Flights from London Heathrow Airport to San Diego on a Sunday will generally be more expensive and average around £610. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Question 17

What cabin class options are available on London Heathrow to San Diego flights?

Accepted Answer

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

Question 18

Can stopping save me money on London Heathrow Airport to San Diego flights?

Accepted Answer

You could potentially save up to 30% on your flight if you consider stops on a London Heathrow Airport to San Diego flight.

Question 19

What is the cheapest London Heathrow to San Diego flight route?

Accepted Answer

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

Question 20

What is the cheapest time of day to depart on your flight to San Diego?

Accepted Answer

In the evening is the cheapest time of day to fly from London Heathrow Airport to San Diego when you can find flight prices for as low as £557. Flying to San Diego in the evening 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 £590. Of course, these prices can vary depending on the time of year and what airport you fly to.

Question 21

How many flights depart from London Heathrow Airport to San Diego on average per week?

Accepted Answer

42 flights are operational weekly from London Heathrow Airport to San Diego as of December 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

Question 22

When did momondo last update prices for flights from London Heathrow Airport to San Diego Airport?

Accepted Answer

Prices for flights from London Heathrow Airport to San Diego Airport were last updated today.

Question 23

How many operators does momondo search for flights from London Heathrow Airport to San Diego Airport?

Accepted Answer

As of December 2025, there are 12 operators available to choose from for flights from London Heathrow Airport to San Diego Airport.

Question 24

How old do you have to be to fly from London Heathrow Airport to San Diego Airport?

Accepted Answer

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to San Diego Airport.

Question 25

What documentation or ID do you need to fly to San Diego Airport?

Accepted Answer

The travel and health documents required for your trip to San Diego Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Diego Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best price found	£423
Fastest flight time	11h 20m
Direct flights	Every day
Airports in San Diego	1 airport

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom £388	Free Cancellation	Rating 7.1 10,529 reviews	Search Air Canada flights
Virgin Atlantic	PriceFrom £402	Free Cancellation	Rating 7.5 675 reviews	Search Virgin Atlantic flights
Lufthansa	PriceFrom £404	Free Cancellation	Rating 6.8 7,631 reviews	Search Lufthansa flights
British Airways	PriceFrom £410	Free Cancellation	Rating 6.7 7,580 reviews	Search British Airways flights
Air France	PriceFrom £417	Free Cancellation	Rating 7.4 1,506 reviews	Search Air France flights
United Airlines	PriceFrom £422	Free Cancellation	Rating 7.4 9,094 reviews	Search United Airlines flights
Finnair	PriceFrom £425	Free Cancellation	Rating 7.6 1,337 reviews	Search Finnair flights
KLM	PriceFrom £427	Free Cancellation	Rating 7.7 1,430 reviews	Search KLM flights
JetBlue	PriceFrom £456	Free Cancellation	Rating 7.2 2,894 reviews	Search JetBlue flights
Iberia	PriceFrom £477	Free Cancellation	Rating 7.0 3,052 reviews	Search Iberia flights

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