LHR - SAN

$365 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 9/30. 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.
1 adult
1 adult, Economy

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, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Diego, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Heathrow to San Diego (LHR-SAN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip 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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Heathrow to San Diego

Fri, Jul 4 - Mon, Jul 7
Austrian Airlines Logo
12:15 pm - 8:40 pmLHR-SAN
16h 25m1 stop
Austrian Airlines Logo
7:45 am - 6:55 amSAN-LHR
15h 10m1 stop
$497Austrian Airlines
Find Deal
Wed, Sep 24 - Thu, Oct 2
British Airways Logo
11:30 am - 2:50 pmLHR-SAN
11h 20mnonstop
British Airways Logo
4:40 pm - 11:25 amSAN-LHR
10h 45mnonstop
$593British Airways
Find Deal
Mon, Sep 1 - Mon, Sep 15
Virgin Atlantic Logo
8:55 pm - 12:00 pmLHR-SAN
23h 05m1 stop
Virgin Atlantic Logo
2:00 pm - 1:30 pmSAN-LHR
15h 30m1 stop
$600Virgin Atlantic
Find Deal
Thu, Oct 30 - Tue, Nov 4
Lufthansa Logo
6:35 am - 4:45 pmLHR-SAN
17h 10m1 stop
Lufthansa Logo
5:35 pm - 7:35 pmSAN-LHR
18h 00m1 stop
$622Lufthansa
Find Deal
Wed, Sep 24 - Wed, Oct 1
Virgin Atlantic Logo
9:20 am - 5:28 pmLHR-SAN
16h 08m1 stop
Virgin Atlantic Logo
10:10 pm - 8:00 pmSAN-LHR
13h 50m1 stop
$626Virgin Atlantic
Find Deal
Wed, Sep 3 - Wed, Sep 10
Lufthansa Logo
6:55 am - 3:25 pmLHR-SAN
16h 30m1 stop
Lufthansa Logo
10:38 am - 7:25 amSAN-LHR
12h 47m1 stop
$627Lufthansa
Find Deal
Mon, Sep 1 - Tue, Sep 9
American Airlines Logo
11:30 am - 2:50 pmLHR-SAN
11h 20mnonstop
American Airlines Logo
3:01 pm - 12:30 pmSAN-LHR
13h 29m1 stop
$632American Airlines
Find Deal
Wed, Nov 19 - Fri, Nov 28
United Airlines Logo
7:40 am - 3:45 pmLHR-SAN
16h 05m1 stop
United Airlines Logo
6:47 pm - 9:20 pmSAN-LHR
18h 33m2 stops
$648United Airlines
Find Deal
Wed, Nov 19 - Fri, Nov 28
United Airlines Logo
7:40 am - 6:25 pmLHR-SAN
18h 45m2 stops
United Airlines Logo
6:47 pm - 8:35 pmSAN-LHR
17h 48m2 stops
$653United Airlines
Find Deal
Wed, Sep 3 - Tue, Sep 9
American Airlines Logo
11:30 am - 2:50 pmLHR-SAN
11h 20mnonstop
American Airlines Logo
3:01 pm - 12:30 pmSAN-LHR
13h 29m1 stop
$656American Airlines
Find Deal
Expert advice

Expert advice for your flight from Heathrow to San Diego

 
Snippets provided in this section are AI-generated based on a summarization 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 original 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

British Airways' premium economy offers 7 inches extra legroom, enhancing long-haul comfort.


BA's Club World provides a business class experience with enhanced comfort for long-haul flights.

American Airlines

American Airlines offers Flagship Business with premium services, ideal for international flights.


American's Premium Economy includes upgraded seats and meals, perfect for long international flights.

Iberia

Iberia's business class offers all-aisle access and comfortable bedding for restful long-haul flights.


Iberia's Premium Economy features 37” seat pitch and 18.5” width, ideal for long-haul comfort.

Read more about Iberiaby Marisa Garcia
Airports
LHR

Heathrow's security lines can be long. Arrive two hours early for carry-on only, more if checking bags. Avoid peak times for a smoother experience.

Read more about LHRby Duncan Madden
SAN

For a quick ride to Downtown San Diego, take the Route 992 bus. It runs every 15 minutes and reaches Downtown in about 15 minutes.

Read more about SANby Brandon Schultz
Our travel experts
Duncan Madden

Duncan Madden

Expert on British Airways and LHR

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
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Marisa Garcia

Marisa Garcia

Expert on Iberia

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Brandon Schultz

Brandon Schultz

Expert on SAN

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Useful Info

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.

Your flight ticket price will generally be cheaper if you fly to San Diego on a Wednesday and more expensive on a Sunday. On your return trip to London Heathrow Airport, you should consider flying back on a Wednesday, and avoid Saturdays for better 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 $634 (return) on average. On the other hand, the most expensive months are July and August, where the average cost of round-trip tickets is $1,049 and $973 respectively.

Can I save money by flying with a layover from London Heathrow Airport to San Diego?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $1,223 on average.

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 13 weeks before departure.

Good to know

Low seasonMarch
High seasonOctober
Cheapest flight$365
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 3% lower 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 round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 $365 for a one-way ticket and $497 for a round-trip.

  • Do I need a passport to fly between London Heathrow Airport and San Diego?

    Yes

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

    When flying out of London Heathrow Airport you will be using London Heathrow. You will be landing at San Diego, also known as 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 nonstop flights from London Heathrow Airport to San Diego on a daily basis.

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

    The two airlines most popular with KAYAK users for flights from London to San Diego are United Airlines and American Airlines. With an average price for the route of $710 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $720 and an overall rating of 7.2.

  • 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 travelers 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 round-trip ticket. You could then fly to San Diego with an airline and back to London Heathrow Airport with another airline. Booking your flights between London Heathrow Airport and SAN can sometimes prove cheaper using this method.

  • 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.

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $643 or less one-way and $641 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, +3 more

Aer Lingus, Alaska Airlines, +4 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, +3 more

Aer Lingus, Alaska Airlines, +4 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 4 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.
7.4
United AirlinesOverall score based on 8790 reviews
6.6Food
7.7Boarding
7.3Comfort
7.0Entertainment
8.1Crew
Airline reviews

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

8.0 ExcellentLawrence, Jun 2025HNL - SFO
Read more United Airlines reviews

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

Airbus plane, nice and polite staff, entertainment even as it was a short flight.

United out of SFO is having issues with catering so none of our meals were loaded on the plane and no offer of compensation for our tickets purchased was offered.

Its good expeince but in enternteiment please be like you tube the music i like or movie

I needed to make changes to my flights. When I called customer service, they assisted me with care professionalism.

A bit rush for transit. Food and entertainment are not available

Wonderful and fast TSA checkpoint. The line was fast and our gate was close by

The gate was too far away for the connecting flight

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

Long 5 hour and 45 min flight and only one drink service and cookie snack

Gate check bags that had to be gate checked because of first flight being a small flight are missing. British airways lost the luggage and haven’t met up with them yet!

Staff lovely , economy seats very uncomfortable , wheelchair assistance wonderful in Heathrow awful in Nashville !

One bottle of water and a package of cookies for comfort plus. We had to literally beg a flight attendant for an extra bottle of water later in the flight due to feeling dehydrated.

Good crew and a great experience. Only good things to say.

The service and food needs to improve to catch up with other international flights

Great thanks - a whole row to myself. Good food but film selection not great.

It is okay. Flight was on time to start and early to land

Fantastic. I am low vision and was impressed with how helpful and accommodating the service tam was. It was super appreciated! I was pleasantly surprised about how delicious the food was. Like, “I wish I had more even though I’m no longer hungry” delicious. 100% enjoyable trip.

You get what you pay for. In general I like the service and flight attendants.

Excellent! Outstanding customer service, the best service I have received. Food was served, dinner, snacks, beverages, crew was there to greet you. 10/10

Charging $300 to be able to pick a seat next to your wife was nothing less than extortion.

My carry-on bag was taken from me when I boarded. It was checked through to London at no charge. It took a big of shuffling, but I was glad not to need to mind it until baggage claim.

Great to have power available for every seat in Premium Economy. I do wish the WiFi was less expensive. It was 23-24 Euros for the flight for one device. And there were times it was unavailable.

I’m very mad because I paid an extra $105 to change seats to an exit row with more leg room. The app clearly showed a gap in between the seats in the row I changed my seat to and I paid for it. When I boarded the plane, it wasn’t an exit row seat and no more room than my original seat. I feel like I was ripped off $105.

The crew on AA international flights in my experience are generally lazy, rude, and inefficient. These guys did not disappoint.

I had a great experience , crew was great and enjoyed the entertainment options I will be booking my next International trip with them .

Front desk was closed at 6 pm, I was unable to get my boarding pass and as such missed my connecting flight home.

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

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

The first class seats were unusable, mine at the end of the flight, my husband's in the middle of the flight, and the one next to me was unusable either, they had to move the person to another seat.

Last minute gate change. Didn’t put our TSA global on our trip even though we asked multiple times to confirm. Did not help with food when could not eat what was served.

The cabin was bit colder than I like but the crew members looked after us very well. They did even offer hot water bottle and hot chocolate. I cannot rate the crew enough excellent is not good enough. They really were wonderful.

Boarding is always a challenge as folks in al groups crowd around for no reason, but crew handled it well. I once again applaud the LHR ground baggage staff as they got our bags from a flight at Terminal 5A to a flight in Terminal 5C within 40 minutes...amazing!

This flight from London to Chicago was actually on an AA airline. I did book through BA but the flight was AA. Great flight, hectic in Chicago, I wouldn't choose to fly through Chicago again, but that's not the airlines fault. The flight itself was great.

Push back is not working when I complaint a male staff he told me that most of the seats are like that so we can’t do anything

Seats were way too small. I got claustrophobic waiting for trash from meal to be taken away. I couldn't move to even close my tray until trash was taken.

Boarding was fairly chaotic. One of your employees clipped my ankle as he was passing with an empty wheelchair and not only did not apologize but stated something to the effect of “oh forGod’s sake.” There was plenty of room for him to pass. otherwise, everything was excellent.

Fantastic! Great seats! Friendly staff! Amazing selection of shows and movies! Smooth ride! I don’t know what more I could have asked for honestly. They made flying a breeze this time around.

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

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