LHR - SAN

£211 Find Cheap Flights from London Heathrow Airport to San Diego

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Heathrow to San Diego departing on 10/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to San Diego

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Diego.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Diego.
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Cheap Flight Deals from Heathrow to San Diego (LHR-SAN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Heathrow to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent return flight deals from Heathrow to San Diego

KAYAK's recommended return flight deals from the most popular airlines that fly from Heathrow to San Diego.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
United Airlines Logo
07:25 - 15:25LHR-SAN
16h 00m1 stop
United Airlines Logo
19:25 - 11:10SAN-LHR
31h 45m1 stop
£395United Airlines
Find Deal
Sat, 10 May - Sat, 10 May
 Logo
14:25 - 23:59LHR-SAN
17h 34m1 stop
 Logo
10:19 - 07:20SAN-LHR
13h 01m1 stop
Mon, 12 May - Mon, 19 May
Lufthansa Logo
06:55 - 15:25LHR-SAN
16h 30m1 stop
Lufthansa Logo
10:30 - 11:10SAN-LHR
16h 40m1 stop
£453Lufthansa
Find Deal
Wed, 14 May - Mon, 19 May
Lufthansa Logo
07:25 - 15:25LHR-SAN
16h 00m1 stop
Lufthansa Logo
10:00 - 10:25SAN-LHR
16h 25m1 stop
£454Lufthansa
Find Deal
Tue, 13 May - Mon, 19 May
British Airways Logo
14:55 - 18:00LHR-SAN
11h 05mdirect
British Airways Logo
16:40 - 11:25SAN-LHR
10h 45mdirect
£475British Airways
Find Deal
Wed, 10 Sep - Wed, 24 Sep
British Airways Logo
11:30 - 14:50LHR-SAN
11h 20mdirect
British Airways Logo
16:31 - 12:50SAN-LHR
12h 19m1 stop
£485British Airways
Find Deal
Sun, 11 May - Sun, 18 May
Iberia Logo
14:55 - 18:00LHR-SAN
11h 05mdirect
Iberia Logo
06:25 - 10:20SAN-LHR
19h 55m1 stop
£533Iberia
Find Deal
Mon, 8 Sep - Wed, 17 Sep
Finnair Logo
16:25 - 23:56LHR-SAN
15h 31m1 stop
Finnair Logo
19:50 - 14:20SAN-LHR
10h 30mdirect
£534Finnair
Find Deal
Fri, 2 May - Thu, 8 May
Iberia Logo
14:55 - 18:00LHR-SAN
11h 05mdirect
Iberia Logo
19:50 - 14:20SAN-LHR
10h 30mdirect
£543Iberia
Find Deal
Wed, 24 Sep - Thu, 2 Oct
Finnair Logo
14:55 - 18:00LHR-SAN
11h 05mdirect
Finnair Logo
12:55 - 12:15SAN-LHR
15h 20m1 stop
£547Finnair
Find Deal
Thu, 8 May - Sat, 24 May

Expert advice for your flight from Heathrow to San Diego

 
Snippets provided in this section are AI-generated based on a summarisation of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are specific to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
British Airways

BA's premium economy offers 18 cm extra legroom, ideal for long-haul comfort.


BA's cabin crew are professional and proactive, enhancing the long-haul experience.

Finnair

Finnair's A350 offers lower cabin altitude and higher humidity for a more comfortable journey.


Finnair's Economy Comfort offers more legroom for a small additional charge, enhancing long-haul comfort.

Read more about Finnairby Gabriel Leigh
Our travel experts
Duncan Madden

Duncan Madden

Expert on British Airways

Duncan Madden

Duncan Madden

Duncan is a freelance travel writer, copywriter and book author in constant search of travel stories and the perpetual sensation of being on holiday. He’s never happier than when on a dusty trail in search of empty waves or ducking under the piste tape in search of snowbound solitude. British born, living in Germany, but happiest heading for the horizon. His first book, Found in Translation, explores the etymologies and stories of country names around the world and is out now.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on Finnair

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more

KAYAK's insights & trends for Heathrow to San Diego flights

Get data-powered insights and trends into flights from Heathrow to San Diego to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from London Heathrow Airport to San Diego?

The average price of all round-trip flights from London Heathrow Airport to San Diego clicked on KAYAK for each day over the last 12 months.
If your flying dates are flexible, you should consider flying to San Diego on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from London Heathrow Airport to San Diego. For your return ticket, we recommend flying on a Sunday and avoiding Wednesdays for the best deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London Heathrow Airport to San Diego, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from London Heathrow Airport to San Diego is January, where tickets cost £464 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is £760 and £756 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from London Heathrow Airport to San Diego, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from London Heathrow Airport to San Diego, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Good to know - Cheap tickets from London Heathrow Airport to San Diego

Low season

March

High season

July

Cheapest flight

£211
Best time to beat the crowds (14% less expensive on average)
Most popular time to fly (32% more expensive on average)
Flight from London Heathrow Airport to San Diego

When to book flights from Heathrow to San Diego

Are your dates flexible? Find out the best times to travel from Heathrow to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking London Heathrow Airport to San Diego flights

  • What is the cheapest flight from London Heathrow Airport to San Diego?

    In the last 3 days, the lowest price for a flight from London Heathrow Airport to San Diego was £282 for a one-way ticket and £528 for a return.

  • Which airports will I be using when flying from London Heathrow Airport to San Diego?

    London Heathrow Airport and San Diego are both served by 1 main airport. You will leave London Heathrow Airport from London Heathrow and will be arriving at San Diego.

  • Which airlines offer Wi-Fi service onboard planes from London Heathrow Airport to San Diego?

    Alaska Airlines, and American Airlines offer inflight Wi-Fi service on the London Heathrow Airport to San Diego flight route.

  • Which aircraft models fly most regularly from London Heathrow Airport to San Diego?

    The Boeing 787-8 Dreamliner is the aircraft model that flies most regularly on the London Heathrow Airport to San Diego flight route.

  • Which airline alliances offer flights from London Heathrow Airport to San Diego?

    oneworld is the only airline alliance operating flights between London Heathrow Airport and San Diego.

  • On which days can I fly direct from London Heathrow Airport to San Diego?

    There are direct flights from London Heathrow Airport to San Diego on a daily basis.

  • Which is the best airline for flights from London to San Diego, Finnair or United Airlines?

    The two airlines most popular with KAYAK users for flights from London to San Diego are Finnair and United Airlines. With an average price for the route of £575 and an overall rating of 7.6, Finnair is the most popular choice. United Airlines is also a great choice for the route, with an average price of £552 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from London Heathrow Airport to San Diego?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London Heathrow Airport to San Diego.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London Heathrow Airport to San Diego?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from London Heathrow Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London Heathrow Airport to San Diego?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to San Diego with an airline and back to London Heathrow Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London Heathrow Airport to San Diego?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from London Heathrow Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from London Heathrow Airport to San Diego

  • Looking for a cheap flight from San Diego to London Heathrow Airport? 25% of our users found flights on this route for £580 or less one-way and £560 or less round-trip.

Prefer to fly direct from London Heathrow Airport to San Diego?

Find which airlines fly direct from London Heathrow Airport to San Diego Airport, which days they fly and book direct flights.

Direct departures

London Heathrow to San Diego

Monday

Aer Lingus, Alaska Airlines, American Airlines, +3 more

Aer Lingus, Alaska Airlines, +4 more

Tuesday

Alaska Airlines, American Airlines, British Airways

Alaska Airlines, American Airlines, +1 more

Wednesday

Aer Lingus, Alaska Airlines, American Airlines, +3 more

Aer Lingus, Alaska Airlines, +4 more

Thursday

Aer Lingus, Alaska Airlines, American Airlines, +3 more

Aer Lingus, Alaska Airlines, +4 more

Friday

Aer Lingus, Alaska Airlines, American Airlines, +2 more

Aer Lingus, Alaska Airlines, +3 more

Saturday

Aer Lingus, Alaska Airlines, American Airlines, +3 more

Aer Lingus, Alaska Airlines, +4 more

Sunday

Aer Lingus, Alaska Airlines, American Airlines, +3 more

Aer Lingus, Alaska Airlines, +4 more

See more direct flights

Direct returns

San Diego to London Heathrow

Monday

Aer Lingus, Alaska Airlines, American Airlines, +3 more

Aer Lingus, Alaska Airlines, +4 more

Tuesday

Alaska Airlines, American Airlines, British Airways

Alaska Airlines, American Airlines, +1 more

Wednesday

Aer Lingus, Alaska Airlines, American Airlines, +3 more

Aer Lingus, Alaska Airlines, +4 more

Thursday

Aer Lingus, Alaska Airlines, American Airlines, +3 more

Aer Lingus, Alaska Airlines, +4 more

Friday

Aer Lingus, Alaska Airlines, American Airlines, +2 more

Aer Lingus, Alaska Airlines, +3 more

Saturday

Aer Lingus, Alaska Airlines, American Airlines, +3 more

Aer Lingus, Alaska Airlines, +4 more

Sunday

Aer Lingus, Alaska Airlines, American Airlines, +3 more

Aer Lingus, Alaska Airlines, +4 more

See more direct flights
See more direct flights

Top 5 airlines serving from Heathrow to San Diego

 
See real verified KAYAK customer reviews for airlines flying from London to San Diego. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Heathrow to San Diego? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.6
FinnairOverall score based on 1272 reviews
7.4Comfort
6.7Food
8.1Crew
7.6Boarding
6.9Entertainment
Airline reviews

Boarding uncomfortable. Stewardess said I would have to check my carry on as there was no room in the overhead bins. Another passenger helped me find a spot.

8.0 ExcellentAnonymous, Jan 2025DFW - CVG
Read more Finnair reviews

Boarding uncomfortable. Stewardess said I would have to check my carry on as there was no room in the overhead bins. Another passenger helped me find a spot.

Any flight that lands safely is a good flight. However our leg from Helsinki was delayed 1 hour with no explanation. The delay would not allow us to make our connection to Cincinnati. I was informed by American Airlines that our Cincinnati flight was rescheduled for the following day. I immediately made a non refundable hotel reservation in Dallas. Upon exiting the plane at Dallas I was given a hotel voucher. Nice, but I can't get a refund on the hotel I booked. A little communication would have been helpful. Food on Finnair is below quality of Korean Air.

The cabin crew really looked like they wanted to be somewhere else. They weren't really interested in providing an attentive service to full fare paying passengers at all. However the Captiain's in flight announcements were relaxed and very entertaining.

Crew were professional and responsive. Food was mediocre and breakfast could do with revampinmg

Food was very ordinary for premium economy, very small portions.

i dont know WHY they call it business class. the seats are NOT significantly wider than economy seats, they just do not let the middle seats be beepked to give the illusion of more space between passengers. the seats do NOT recline any more than economy seats either. the only real difference is the full meal served to business (vs none for economy). I would rather have a wider, lie flat ACTUAL business class seat with no food for a 3 hr flight. this was pretty disappointing to say the least.

There wore nice leather like sits, in my opinion seats lay out bit tight . Crew was great they did averything possible to make averywone comfortable as possible, food was, think worst I ever head on flight, head chicken and yellow rice. Ice cream was a nic treat.

Our previous flight was delayed but they waited for us to board.

Flight was delayed, short time connection to next flight but we make it, service was good, worth to fly just to try thair on board blueberry juce. Eccelent communication with airline.

My American Airlines flight was deleted and you guys never let me know

I did not fly by vergin atlantic from bangalore to vasco da gama

Your flight delayed at Heathrow n I almost missed my mother funeral.you idiots. I had to waste 10 hours in different airports. Thank your stars I'm not suing you.

Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,

Flight took off an hour late. Had to stay on the tarmac for half an hour after landing. Both annoying.

We had an unfortunate experience where we had to leave the aircraft after boarding, shortly before the scheduled takeoff time, and re-board. The reason given was that a passenger felt ill and had to cancel their plans and therefor their luggage had to be found and removed.

We’ve used VA before many times the experience is always been good they have lovely staff and the food is always delicious.

Everything about the flight was amazing from check in to boarding entertainment was okay food we didn’t try.

Seats were old and dirty, for a long haul flight you expect to be able to recline and for the av to work properly. Choice for vegans was fruit….

The Virgin Atlantic crew was very good. However, the equipment was OK, the seats were OK, but her bags did not arrive with me. Two bags showed up a day later and I’m still waiting for my third back.

The crew was very good. However, the equipment was a bit dated. Some of the electronics were not working. To top it, three bags didn’t arrive with me. Two of them were delivered a day later. I’m still waiting for the third bag, I was so looking forward to this virgin Atlantic flight, but, I am disappointed.

I wish they could put the pre-tsa check on the tickets or global entry.

We upgraded to Business class paying approx. $1,300. Despite the upgrade, we were still required to pay an additional €70 for a checked bag. Furthermore, we were informed that another €70 would have been charged for our carry-on bag, as it was 3kg over the limit. To avoid this, we had to move clothing from the carry-on into the checked bag, which was both inconvenient and frustrating. Given the significant amount paid for the Business Class upgrade, we found this treatment to be quite appalling and disappointing. We expected a higher level of service and consideration for our luggage, and this experience did not meet those expectations.

At Barcelona, you have to get your passports checked before going to the E gates so give yourself time for that. The restaurants around the D and E gates are really limited compared to prior to passport control. On boarding, the gate staff tried to charge me EUR100 for my carryon, saying it was too big. I put it in their ‘measurement box’ and it fit with the top slightly protruding where the handle was. The gate staff then said my bag was ok to carry and put an ‘approved’ tag on my bag. I was bussed to the plane I boarded a ‘Level’ carrier which I had not heard of before. If you booked through a code share like American, you will be served food and alcohol on the plane. They do not provide complimentary ear phones or blankets. The internet was free but only for texting. WhatsApp worked but Spotify did not. Entertainment choice was adequate, movies were old and selection was limited. On arrival at LAX, my checked in bag was damaged as the wheel was broken. I am taking this up with Iberia. Their website and customer service was moderate in terms of user friendliness. You have to have all your documents and prepared to be patient and persistent. Let’s see how this goes. All n all, for the price I paid, I would recommend Level.

Was very unhappy with the entire process, from check in to boarding to the comfort of the flight. Did not enjoy the flight on Level.

Overall a great. However, the seating is way too narrow, for guys with any shoulder width. Luckily the crew moved the guy next to me, or it would have been miserable.

The staff on our flight from Charlotte to Boston were very friendly.

Alaska located my mother, aware that she had mobility issues and they seated her closer to the door. She and I were seated together so I felt more secure to be able to assist her. The desk attendant reviewed what steps to take when boarding. Allowed us to board first, we loved that. I was allowed time to help her board slowly, seat her, put all her things in their place before the crowds came through. These small details made me want to travel Alaska more when possible.

The flight was decent. I purchased my flight through Iberia, traveling with my elderly mother with mobility issues. I try to pay for luggage and seats online prior but Iberia website directs me to AA website. AA airlines website does not recognize the record locator. My mother and I are separated and each get a middle seat. She is seated the furthest away from a bathroom. I had to sit behind her to see her wave at me to use the bathroom. Lights out on the flight and I could not see her wave and she is not tech savvy to push an attendant button even though I showed her how. The attention to this detail puts AA at the bottom of my list when traveling with my elderly mother. Bad execution and handling when servicing those with extra needs due to mobility. I could not get her to the bathroom because she’s slow and she had to wait for me to get up from my middle seat then move her out of her middle seat. She had an accident which required that I hel her clean up before taking her back to her seat.

The flight staff was excellent, one of the best I've had. Food and wine was very good and seats very comfortable. Luggage came out pretty quickly too considering the number of passengers. Also, excellent internet. The only thing that could have been improved on was the choice of movies -- kind of limited and not great selections.

The plane was not well maintained. The entertainment system didn’t work properly, eg moving map. Many of the seat controls did not work. Cabin temperature fluctuated considerably during the flight. The seat allocated was poor, it was noisy and offered no privacy. The perfume in the toilet triggered severe allergies. Crew was very goid.

The flight was delayed by an hour. Made the connection uncomfortably tight.

The plane was very clean. The bathroom was clean as well. The land crew were very polite and informative and helpful. They informed me that there is a long way and challenging to go from international terminal to national terminal and in addition to getting my suitcases and going through customs and dropping them again for my second leg of trip which was San Francisco to Los Angeles . I have left knee issue and had a recent fall with aching muscles all over, the land crew suggested wheelchair help for me, God bless her. If I did not have help, I could not make it to my last terminal. Thank you UNITED AIRLINE!

I was very happy with everything, thank you for the smooth flight ✈️

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

Entertainment system is old. Food can be tastier Need to provide toothbrush and toothpaste at least when asked.

When we went to the lounge they told us to go into the main lounge and not the full business class section, later they told me that Lufthansa wont pay the full fee to alloq the business class passengers entry to the nicer sectikn where all the other airlines nusiness class passengers go into. Very poor arrangement.

Terrible experience. Should be a short simple flight from San Francisco to Palm Springs. Disgusting insult that United Air doesn’t have a cabin crew ready to receive a plane that’s already an hour plus late in departure. Lots of misinformation along the way from cockpit and crew. Definitely unimpressed with both union and management.

Not what I expected for the last leg of a $5100 business class experience. Boarding was a nightmare. The flight was delayed and I had to keep checking my email to ensure I was at the right gate since the airline or the terminal had no clue until 15 mins prior to boarding. Food was gross, limited drink options.

Flights scheduled with impossible connections - Lufthansa apparently believes it takes 7mins to change terminals, go through passport control, re-clear security and walk 1.8kms…..and everything will work perfectly (which it never does at Frankfurt). No staff on hand to assist with transfers on delayed flights. No transfer guidance provided by app. No compensation offered for 6hr delay to connecting flight.

This was the best carrier, comfort, service, good food, on time experience on a long haul flight. New, clean, quiet, smooth aircraft!!!

Flight Attendant Karen Lynn was an absolute delight. She assisted in every portion of the services provided throughout the flight, aided with any and all concerns expressed by passengers, and even helped comfort an upset child who was one of five of a traveling family. This quality of service is what keeps me coming back to American. Thank you!

The worst, flight cancelled because the aircraft was not full. Heathrow ground crew totally not helpful and arrogant. Lady proposed us flight with 40min layover instead of direct and said it is our problem of course she was unable to do anything as everything was beyond her control she claimed. after calling on hotline another flight was booked. Flight was cancelled last second so we could not take direct from Zurich but we had to stay overnight in London.

Food was terrible , crew were excellent , IFE was dire . Overall comfortable seat and cabin. Nothing special .

If my tv wasn’t broken and I wasn’t in a seat that didn’t allow for sleeping

Delayed flight due to lack of crew caused me to miss my connection

Please make sure the number of seats matches the number of overhead bins and passengers don't carry on more than one bag.

Seating is tight if you don’t upgrade. Food was decent. Boarding and unboarding was efficient. Smooth flight. Could make upgrades more affordable

American Airlines seemed to run a 'dry' flight. No alcohol was offered at any point with meals. Breakfast was a bit tasteless. The 'hot pocket' whatever that is, was horrid breadish pastry with very little filling. Decaf coffee was horrid. Seats didn't seem as wide or spacious as usual, especually for a ten hour flight.

They did not provide free WiFi, It could be purchased for, I think, around $25, This seemed excessive.

Reliable, great value, but not outstanding in any aspect. This is similar to the experience you get in most international carriers like Etihad or Delta.

Everything you need to know for your flight from Heathrow to San Diego

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