Question 1

What are the cheapest airlines flying from London Heathrow Airport to San Diego round-trip?

Accepted Answer

Flying on British Airways is currently your cheapest option to San Diego, with prices starting at £456. Additional return tickets that might be worth considering are offered by SWISS and United Airlines, with the lowest prices starting at £458 and £458, respectively. You may be able to fly from London Heathrow Airport to San Diego for 18% less than the average price by searching for these airlines.

Question 2

What are the cheapest airlines to fly from London Heathrow Airport to San Diego one-way?

Accepted Answer

The cheapest airline one-way is British Airways, with whom users have recently found tickets for as low as £454. However, be on the lookout for offers from Aer Lingus and Lufthansa, as they are both options that can get you from London Heathrow Airport to San Diego for a low price.

Question 3

How far ahead should I book a flight from London Heathrow Airport to San Diego?

Accepted Answer

The best time to book flights from London Heathrow Airport to San Diego is 89 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Question 4

What is the cheapest month to book a flight from London Heathrow Airport to San Diego?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to San Diego (average of £585). Flying from London Heathrow Airport to San Diego in July is currently the most expensive (average of £920). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 5

What is the cheapest day to fly from London Heathrow Airport to San Diego?

Accepted Answer

Travellers seeking maximum savings on their London Heathrow Airport to San Diego flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

Weekly flight availability from London Heathrow Airport to San Diego

Accepted Answer

The most flights from LHR to SAN are scheduled on a Friday (10 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).

Question 7

E

Accepted Answer

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 58.0 inches per month. February is typically the wettest month, when rainfall can reach 58.0 mm. July is typically the driest time to visit San Diego when rainfall is around 0.0 mm.

Question 8

E

Accepted Answer

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

Question 9

What are the cheapest flights from London Heathrow Airport to San Diego?

Accepted Answer

Looking at all options, your cheapest flight can be booked for £379. While the most popular route (London Heathrow - San Diego) can be booked for £430 on average our data indicates £1,719 when flying from London Heathrow Airport to San Diego.

Question 10

What are the most reliable airlines from London Heathrow Airport to San Diego?

Accepted Answer

No one likes to see their flight delayed. When booking a flight from London Heathrow Airport to San Diego consider choosing Iberia (89%), American Airlines (83%) or Alaska Airlines (83%) as they are the most reliable in getting you off to your destination on time.

Question 11

What are the most popular airlines that fly from London Heathrow Airport to San Diego?

Accepted Answer

American Airlines, Air Canada and Air France are the most popular airlines when flying from London Heathrow Airport to San Diego.

Question 12

What is the cheapest day to fly round-trip from London Heathrow Airport to San Diego?

Accepted Answer

It’s generally more expensive to depart on a Thursday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

Question 13

How far in advance should I book a flight from London Heathrow Airport to San Diego?

Accepted Answer

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 43 days in advance, which can save you up to 35% on flights from London Heathrow Airport to San Diego compared to booking the week you need them. Waiting 43 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £509. For sooner than that we have options available in the next 3 days from £590.

Question 14

What is the cheapest month to fly from London Heathrow Airport to San Diego?

Accepted Answer

March can be a great time to fly to San Diego from London Heathrow Airport with a flight ticket averaging about £564. Cheapflights users have found deals in the month of March for as cheap as £386. The most expensive prices can be found in the month of July.

Question 15

What is the cheapest time of day to fly from LHR to SAN?

Accepted Answer

When flying from London Heathrow Airport to San Diego, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 11% versus a flight in the afternoon.

Question 16

What airport do you fly into for flights to San Diego from London Heathrow?

Accepted Answer

San Diego (SAN) is the airport you will fly into if you book a flight from London Heathrow to San Diego. You should not have trouble finding flights to San Diego from London Heathrow; the airport handles an average of 7 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 11 airlines have flights to the San Diego airport from London Heathrow. It is only a 2.6 mi journey from San Diego (SAN) to San Diego’s city center.

Question 17

Can I find deals for flights from Heathrow to San Diego that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Heathrow to San Diego flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 18

How can I find direct flights from Heathrow to San Diego?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to San Diego.

Question 19

Can I find deals for business class flights from Heathrow to San Diego?

Accepted Answer

Yes. Cheapflights offers flight deals from Heathrow to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 20

How does Cheapflights help users find flights from Heathrow to San Diego?

Accepted Answer

When you search for this flight from Heathrow to San Diego, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 21

Why should you use Cheapflights to find cheap flight tickets from Heathrow to San Diego?

Accepted Answer

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to San Diego.

Question 22

Can Cheapflights find flights from Heathrow to San Diego with no change fees?

Accepted Answer

Need flexible booking options for your flight to San Diego from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Question 23

Can Cheapflights notify me if prices for flights from Heathrow to San Diego become cheaper?

Accepted Answer

Not ready to book yet? You can track prices for flights from Heathrow to San Diego on Cheapflights with our Price Alert feature and get notified when better prices are available.

Round-trip from	£456
One-way from	£437
Popular in	July
Cheapest in	January
Average price	£564
Good round-trip deal	£472 or less
Good one-way deal	£404 or less

Airline	Cheapest	Average	Flexibility	On-time
Air France	Cheapest£363	Average£416	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Air Canada	Cheapest£378	Average£504	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
British Airways	Cheapest£389	Average£541	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£392	Average£505	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Lufthansa	Cheapest£398	Average£489	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£404	Average£541	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Finnair	Cheapest£415	Average£557	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£415	Average£546	FlexibilityNo cancel fee	On-time75%	Search KLM flights
American Airlines	Cheapest£430	Average£583	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Iberia	Cheapest£465	Average£597	FlexibilityNo cancel fee	On-time77%	Search Iberia flights

Cheap flights from London Heathrow Airport to San Diego from £437

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London Heathrow to San Diego are usually found in January or February, booked 89 days in advance, depart on a Friday or Saturday and return on a Monday

Cheap flight deals from Heathrow to San Diego

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Find flight deals from Heathrow to San Diego

Cheapest flights from Heathrow to San DiegoExplore the most affordable flight options available from Heathrow to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 June 2025.

Explore the most affordable flight options available from Heathrow to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 June 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to San Diego that are best for you.

Best time to book a flight from Heathrow to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Heathrow with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to San Diego

How far ahead should I book a flight from London Heathrow Airport to San Diego?

Use this chart to determine the optimal time to book a return flight from Heathrow to San Diego. Price data was last updated on 27 June 2025.

What is the cheapest month to book a flight from London Heathrow Airport to San Diego?

What is the cheapest time of day to fly from LHR to SAN?

Find hourly flight availability from Heathrow to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 June 2025.

Weekly flight availability from London Heathrow Airport to San Diego

Explore weekly flight availability from Heathrow to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 30 June 2025.

Reviews of airlines servicing San Diego

Read reviews from past customers who have flown with Delta, Austrian Airlines, andSWISS from London Heathrow Airport to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to San Diego from London Heathrow?

What are the cheapest airlines flying from London Heathrow Airport to San Diego round-trip?

What are the cheapest airlines to fly from London Heathrow Airport to San Diego one-way?

What are the most reliable airlines from London Heathrow Airport to San Diego?

What are the cheapest flights from London Heathrow Airport to San Diego?

Can I find deals for flights from Heathrow to San Diego that include hotel bookings?

How can I find direct flights from Heathrow to San Diego?

Can I find deals for business class flights from Heathrow to San Diego?

What is the cheapest month to book a flight from London Heathrow Airport to San Diego?

Travelling to a place near London Heathrow Airport?

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Fly from Heathrow to San Diego on these airlines

Choose from the following airlines for your flight from Heathrow to San Diego. Flights are based on user searches made on Cheapflights and were last updated on 30 June 2025.

Top 10 airlines flying from Heathrow to San Diego

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How does Cheapflights help users find flights from Heathrow to San Diego?

Why should you use Cheapflights to find cheap flight tickets from Heathrow to San Diego?

Can Cheapflights find flights from Heathrow to San Diego with no change fees?

Can Cheapflights notify me if prices for flights from Heathrow to San Diego become cheaper?

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Cheapest flights from Heathrow to San Diego
Explore the most affordable flight options available from Heathrow to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 June 2025.