Q: How much does it cost for a return flight from London Heathrow Airport to San Diego?

Airfare is typical for this route at the moment. London Heathrow Airport to San Diego flights typically cost between £457 and £557 in October. The cheapest return flight price found within the last 3 days was £483 on Air Canada (6 Oct-20 Oct).

Question 1

What’s the fastest stopover option from London Heathrow Airport to San Diego?

Accepted Answer

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 13h 32m.

Question 2

What’s the cheapest stopover airport for flights from London Heathrow Airport to San Diego?

Accepted Answer

Washington, D.C. (IAD) is the most affordable one-stop option, with an average return flight price of £400.

Question 3

How much does it cost for a return flight from London Heathrow Airport to San Diego?

Accepted Answer

Airfare is typical for this route at the moment.London Heathrow Airport to San Diego flights typically cost between £457 and £557 in October.
The cheapest return flight price found within the last 3 days was £483 on Air Canada (6 Oct-20 Oct).

Question 4

What’s the top stopover airport for flights from London Heathrow Airport to San Diego?

Accepted Answer

Denver (DEN) – chosen by Cheapflights users on 29% of one-stop itineraries from London Heathrow Airport to San Diego on Cheapflights.

Question 5

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to San Diego?

Accepted Answer

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 01m.

Question 6

How long is the flight from London Heathrow Airport to San Diego?

Accepted Answer

Air Canada, United Airlines, and Lufthansa can get you from London Heathrow Airport to San Diego in just under 16h 05m. Your travel time can differ by up to 15h. London Heathrow Airport and San Diego are separated by a distance of 5469 mi. This flight may include one or multiple stops.

Question 7

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

Accepted Answer

Flying on Air France is currently your cheapest option to San Diego, with prices starting at £370. Additional return tickets that might be worth considering are offered by Air Canada and Virgin Atlantic, with the lowest prices starting at £385 and £399, respectively. You may be able to fly from London Heathrow Airport to San Diego for 34% less than the average price by searching for these airlines.

Question 8

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 85 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 9

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 10

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 11

Weekly flight availability from London Heathrow Airport to San Diego

Accepted Answer

The most flights from LHR to SAN are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).

Question 12

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 13

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 14

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 £467. While the most popular route (London Heathrow - San Diego) can be booked for £446 on average our data indicates £2,013 when flying from London Heathrow Airport to San Diego.

Question 15

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 American Airlines (71%), Alaska Airlines (71%) or British Airways (71%) as they are the most reliable in getting you off to your destination on time.

Question 16

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 17

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 Friday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

Question 18

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 27% 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 £500. For sooner than that we have options available in the next 3 days from £567.

Question 19

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

Accepted Answer

February can be a great time to fly to San Diego from London Heathrow Airport with a flight ticket averaging about £574. Cheapflights users have found deals in the month of February for as cheap as £388. The most expensive prices can be found in the month of July.

Question 20

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 evening, which can drop the price by up to 8% versus a flight in the afternoon.

Question 21

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 8 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 22

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 23

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 24

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 25

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 26

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 27

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 28

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	£483
One-way from	£452
Popular in	July
Cheapest in	January
Average price	£685
Good round-trip deal	£535 or less
Good one-way deal	£545 or less

Airline	Cheapest	Average	Flexibility	On-time
Air France	Cheapest£370	Average£424	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Air Canada	Cheapest£385	Average£489	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Virgin Atlantic	Cheapest£399	Average£517	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£400	Average£553	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Lufthansa	Cheapest£408	Average£494	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£414	Average£558	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Finnair	Cheapest£422	Average£561	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£423	Average£522	FlexibilityNo cancel fee	On-time75%	Search KLM flights
American Airlines	Cheapest£438	Average£650	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Iberia	Cheapest£482	Average£610	FlexibilityNo cancel fee	On-time77%	Search Iberia flights

Cheap flights from London Heathrow Airport to San Diego from £452

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 2/11. 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 85 days in advance, depart on a Saturday or Friday and return on a Monday

Cheap flight deals from Heathrow to San Diego

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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 28 August 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 28 August 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?

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?

How much does it cost for a return flight from London Heathrow Airport to San Diego?

Weekly flight availability from London Heathrow Airport to San Diego

What’s the top stopover airport for flights from London Heathrow Airport to San Diego?

What’s the fastest stopover option from London Heathrow Airport to San Diego?

What’s the fastest stopover option from London Heathrow Airport to San Diego?

Which airport typically offers the quickest stopover for flights from London Heathrow Airport to San Diego?

Reviews of airlines servicing San Diego

Read reviews from past customers who have flown with Finnair, Virgin Atlantic, andIberia 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?

How long is the flight from London Heathrow Airport to San Diego?

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

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 San Diego?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 28 August 2025.

Top 10 airlines flying from Heathrow to San Diego

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

100% Free

Book with Flexibility

Travel Smart

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 28 August 2025.