LHR - SAN

$569 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, 0 bags

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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$932
Typical prices: $953-$687
American Airlines
Sat 10/31Mon 11/9
LHR - SAN • Non-stop
Cheapest non-stop
$937
Typical prices: $896-$665
American Airlines
Tue 9/22Tue 9/29
LHR - SAN • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
For long-haul comfort, Iberia Premium Economy offers 37” pitch and 18.5” width.
British Airways premium economy adds 7 inches of legroom on this route.
Expert advice
Expert advice
Expert advice
Expert advice
Top airlines
Cheapest • from $932 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with British Airways. Average duration is 11h 20m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Avoid delays
Most punctual • 83% on-time
Best time • Fewest delays
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $668 (round-trip)
Shortest trip • 13h 58m (one-way)
Insights
Insights
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 23% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 25% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Diego!
Flight Deals
Booking Insights
Expert advice
Flight 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

Sat, Oct 31 - Mon, Nov 9
American Airlines Logo
12:50 pm - 5:10 pm
LHR
-
SAN
11h 20mnonstop
American Airlines Logo
10:48 am - 10:00 am
SAN
-
LHR
15h 12m
1 stop
$932American Airlines
Sat, Nov 21 - Fri, Nov 27
British Airways Logo
8:20 am - 3:54 pm
LHR
-
SAN
15h 34m
1 stop
British Airways Logo
6:00 pm - 12:35 pm
SAN
-
LHR
10h 35mnonstop
$933British Airways
Tue, Jul 7 - Wed, Jul 15
Air Canada Logo
9:30 am - 8:58 pm
LHR
-
SAN
19h 28m
2 stops
Air Canada Logo
12:35 pm - 1:20 pm
SAN
-
LHR
16h 45m
1 stop
$935Air Canada
Sun, Jul 5 - Mon, Jul 13
Lufthansa Logo
7:30 pm - 6:32 pm
LHR
-
SAN
31h 02m
2 stops
Lufthansa Logo
10:49 am - 10:10 am
SAN
-
LHR
15h 21m
1 stop
$936Lufthansa
Mon, Jun 29 - Mon, Jul 6
Lufthansa Logo
3:05 pm - 8:58 pm
LHR
-
SAN
13h 53m
1 stop
Lufthansa Logo
11:55 am - 11:10 am
SAN
-
LHR
15h 15m
1 stop
$937Lufthansa
Tue, Jul 14 - Tue, Aug 4
Air Canada Logo
9:30 am - 8:58 pm
LHR
-
SAN
19h 28m
2 stops
Air Canada Logo
8:15 am - 10:00 am
SAN
-
LHR
17h 45m
2 stops
$938Air Canada
Tue, Jun 30 - Tue, Jul 7
Lufthansa Logo
3:05 pm - 8:58 pm
LHR
-
SAN
13h 53m
1 stop
Lufthansa Logo
11:55 am - 2:10 pm
SAN
-
LHR
18h 15m
1 stop
$939Lufthansa
Sun, Jul 5 - Mon, Jul 13
Lufthansa Logo
7:30 pm - 6:32 pm
LHR
-
SAN
31h 02m
2 stops
Lufthansa Logo
12:33 pm - 5:05 pm
SAN
-
LHR
20h 32m
2 stops
$940Lufthansa
Sun, Oct 11 - Sun, Oct 18
Lufthansa Logo
8:30 am - 10:41 pm
LHR
-
SAN
22h 11m
2 stops
Lufthansa Logo
5:15 pm - 6:25 pm
SAN
-
LHR
17h 10m
1 stop
$941Lufthansa
Tue, Jul 7 - Tue, Jul 14
Lufthansa Logo
7:30 pm - 6:32 pm
LHR
-
SAN
31h 02m
2 stops
Lufthansa Logo
10:49 am - 5:40 pm
SAN
-
LHR
22h 51m
2 stops
$942Lufthansa
Booking Insights

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.

How much is a round-trip flight from London Heathrow Airport to San Diego?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from London Heathrow Airport to San Diego departing in October.

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 Tuesday and more expensive on a Saturday. On your return trip to London Heathrow Airport, you should consider flying back on a Wednesday, and avoid Fridays 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 February, where tickets cost $645 (return) on average. On the other hand, the most expensive months are July and April, where the average cost of round-trip tickets is $1,057 and $1,024 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.

No, with an average price for the route of $1,177, prices are generally cheapest when you fly direct.

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 3 weeks before departure, which saves you about 23% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 19 weeks before departure.

Expert advice

Expert advice for your flight from Heathrow to San Diego

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Iberia

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.

Duncan Madden

Duncan Madden

Expert on British Airways and LHR

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.

Harriet Baskas

Harriet Baskas

Expert on American Airlines

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.

Brandon Schultz

Brandon Schultz

Expert on SAN

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.

Good to know

Low seasonFebruary
Cheapest flight$569
Best time to beat the crowds with an average 26% drop in price.
Most popular time to fly with an average 22% increase in price.
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 5 days, the lowest price for a flight from London Heathrow Airport to San Diego was $569 for a one-way ticket and $932 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 aircraft models fly most regularly from London Heathrow Airport to San Diego?

    The Boeing 777-300ER 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?

    Star Alliance, and oneworld are the airline alliances operating flights between London Heathrow Airport and San Diego, with Star Alliance being the most commonly used for this route.

  • 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 $939 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 $1,019 and an overall rating of 7.1.

  • 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 $736 or less one-way and $1,158 or less round-trip.

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

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from London Heathrow 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

British Airways

British Airways

Tuesday

British Airways

British Airways

Wednesday

British Airways

British Airways

Thursday

British Airways

British Airways

Friday

British Airways

British Airways

Saturday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Direct returns

San Diego to London Heathrow

Monday

British Airways

British Airways

Tuesday

British Airways

British Airways

Wednesday

British Airways

British Airways

Thursday

British Airways

British Airways

Friday

British Airways

British Airways

Saturday

British Airways

British Airways

Sunday

British Airways

British Airways

See more direct flights

Reviews of the top 3 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 9771 reviews
7.7Boarding
7.3Comfort
7.1Entertainment
6.6Food
8.1Crew
Airline reviews

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

10.0 ExcellentKaryn, Jun 2026
DEN - LAX
Read more United Airlines reviews

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

Uncomfortable plastic seats even in premium economy. No free wifi. Even paid wifi was spotty to nonexistent. Bad food. Much worse than economy on foreign carriers like Qantas.

How can you rate a flight when it is canceled after you leave the gate & 3 hours into sitting there or in remote area of airport after mechanical problems

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

First class ticket gets you no seat back entertainment? I have to bring my own laptop to see a movie? And most of their movies have ADS? No thank you. Worse: Tiny snacks only on a 2 hr flight?

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

Seats were not super comfortable and food was not good at all. If I had a chance I would definitely fly a different airline. Of course they are better than any budget airline, but not by much.

Very friendly and helpful staff on board and United was excellent when I missed my onward flight due to the delay in London. Very well organised meant much less stress

The passport line was so long that many of us were concerned about missing our flight and some did. It would've helped if a AA representative had gone to the passport check-in sooner to advise that boarding was closing and those flying that were stuck back in the line, needed to come forward with apologies to others. An AA representative did do that but only after boarding had already closed. (They delayed take-off so that more who were running with carry-ons could get to the gate - especially stressful for older people!) Then to be crammed into a seat with barely enough leg room for a thin woman, 5'7", like me, much less for a taller, bigger person was not comfortable, especially if the person in front decided to lean back. Crew was fine, food and entertainment also.

The seat when "flat" was not flat and pad was too thin to cover it.

Awful customer service, horrible experience. We travel a lot domestic & international- worst flights to/from ever. Brief bkgd as Inhate to relive this experience: booked and chose 2 seats 4 months prior in Premium Economy - last row end seats close to bathroom, no one behind us, plenty of legroom;, underwear storage — flown this was on other airlines, love it. We receive notice 4 days before scheduled overseas flight - plane has changed, new seats assigned. Seats are split into single seats, opposites of the plane, FRONT Row so no reachable storage. Called BOTH British Air & America. American “switched planes and the seats you want are taken;” British Air “Yes, we’ll be glad to accommodate you (type type type). Just ask at the Gate and someone will give you new boarding passes with seats together in middle, OK?” — OK. —At Gate the attendant looks us up saying “No, it is an overbooked flight and yours are the only seats available.” But but but wait, “We were TOLD our seats had been switched and seated together?” Gate attendant “Well they were wrong and don’t change your seats. Your original seats are where you’ll sit.”. Right. No help WHATSOEVER. We sit opposite on way there, wife VERY disgruntled, a Tol 5 worst ways to start a 3-week bus tour of UK. We promise to NEVER FLY AMERICAN OR BROTISH AIR EVER, and we have 3 more extensive trips planned..

They lost my bag. ... And I asked them 3 times to 3 different people if my checked bag will maKe it all the way - they all confirmed and at the end it was left at the connection... Bravo

Delayed for mechanical and no updates on what was happening and how long the delay might be.

British Airways is an excellent airline. Comfort, food and airline personnel.

Older airplane with worn out seats. No entertainment system at all. Connecting to Wi-Fi was problematic and hit and miss.

An delay of almost 3 hours while passengers were already in the plane kept us very uncomfortable. The food was also very limited. A bad experience overall.

I understand that there is a catering issue - water should be the minimum stock. During the flight, not once that the attendants came through with water. The conversations in the kitchen were very loud and they were swearing. I do not expect any white glove service, at the minimum, we should be cordial. It was almost an inconveniece that we were on the flight. And it made us feel if you even dare question us, we'll make you deplane.

The flight attendant use 1.5 hours to answer my call. My dirty food tray was unattended.

Because our ABZ-LHR flight was cancelled by BA for reasons they refuse to tell us--not weather--we did not make this flight and were booked on the following day. BA offered no assistance to us on the phone or in the airport, and we had to find a hotel at Heathrow on our own.

Horrible - flight was delayed by 6 hours - we boarded, were made to de-board due some technical fault; aircraft changed; special meals request on new flight - all went awry. Landed in Dulles airport; breezed thru immigration; as Business Class passengers or baggage was delivered almost 90 minutes after landing; air tags indicated the bags were just near the carousel but the unhelpful BA staff - Maria and Ghina refused to give any update - palming it off on some imaginary invisible “manager” despite air tags evidence showing it right there. So about 50-60 passengers waiting and getting infuriatingly impatient for their bags coz one container was not delivered. Finally after much argument by some other passengers Maria condescended to go to the “ramp” and within 5 minutes the baggage was delivered miraculously. Question is why couldn’t she have done it one hour earlier ? Poor poor experience once again on Business Class BA.

Cheap Flight Fares would not provide booking info. I canceled the reservation and we arbitrated with American Express. They provided erroneous info to Amex and it was determined that C.F.F. deserved the price of the ticket. Worse experience I've ever had.

Seating space is appalling. Seats and all surrounding area in "Economy" is built for individuals shorter than 4' 10" and below 120 lbs. Ridiculous. While I'm not expecting fine dining, the food was the worst airplane food that I can recall.

Business class lounge for my gate was closed and no email was sent, causing me to walk back and forth to different gates, etc for over 20 minutes one way. Flight entertainment was mediocre with very poor choices especially for business class cabin. Original flight was cancelled and rebooking was difficult and no reason given for cancellation.

Very comfortable flight and simple and directed one way and back. Amazing price.

We loved our flight attendant, Emma from Scotland, the meal and entertainment offerings were wonderful, the flight was smooth, and enough leg room to stretch. We would fly with you again!

Los Angeles to London. 25th of April 2026. Business class. I was flying backwards with a complete stranger snoring next to me. In Business class. Males and females, strangers lying next to each other. Seats were backwards. I paid for comfort. I got dizziness and stress.

Long line with check in at the DIA British Airway counter.

The flights were on time. Cabin crew were nice. The food was terrible! Checking in was not easy using my phone.

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

Information on your arrival and departure airports