LHR - SAN

$551 Find Cheap Flights from London Heathrow Airport to San Diego - Compare and Save

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Everything you should know

Cheapest round-trip
$844
Typical prices: $812-$1,180
Multiple Airlines
Wed 1/17Wed 1/24
LHR - SAN • 2 stops
Cheapest non-stop
$874
Typical prices: $838-$1,218
British Airways
Sun 11/4Fri 11/9
LHR - SAN • Non-stop
Advice from real travelers
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
+1
Expert advice
+1
Nonstop flights
You can fly direct with British Airways. Average duration is 11h 24m
Direct flights
+1
Direct flights
+1
Avoid delays
Most punctual • 84% on-time
Best time • Fewest delays
Insights
Insights
When to book
in advance
Our data shows that travelers who book at least 18 weeks in advance save around 28% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 22% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $573 (round-trip)
Shortest trip • 13h 10m (one-way)
Insights
Insights
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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)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Heathrow to San Diego

Sun, Jan 17 - Sun, Jan 24
Multiple Airlines Logo
6:30 am - 5:38 pmLHR  London Heathrow-SAN San Diego
19h 08m2 stops Amsterdam Schiphol San Francisco
Multiple Airlines Logo
7:11 am - 10:55 amSAN  San Diego-LHR London Heathrow
19h 44m1 stop San Francisco
$844Multiple Airlines
Wed, Nov 4 - Fri, Nov 13
Scandinavian Airlines Logo
10:20 am - 10:43 pmLHR  London Heathrow-SAN San Diego
20h 23m2 stops Kastrup Copenhagen Los Angeles
Scandinavian Airlines Logo
3:59 pm - 6:30 pmSAN  San Diego-LHR London Heathrow
18h 31m2 stops Los Angeles Kastrup Copenhagen
$848Scandinavian Airlines
Tue, Nov 24 - Mon, Nov 30
Multiple Airlines Logo
6:30 am - 7:11 pmLHR  London Heathrow-SAN San Diego
20h 41m2 stops Amsterdam Schiphol San Francisco
Multiple Airlines Logo
5:29 pm - 10:45 amSAN  San Diego-LHR London Heathrow
33h 16m3 stops Denver Intl San Francisco Amsterdam Schiphol
$848Multiple Airlines
Tue, Nov 3 - Thu, Nov 12
Scandinavian Airlines Logo
10:20 am - 10:43 pmLHR  London Heathrow-SAN San Diego
20h 23m2 stops Kastrup Copenhagen Los Angeles
Scandinavian Airlines Logo
3:59 pm - 5:40 pmSAN  San Diego-LHR London Heathrow
17h 41m2 stops Los Angeles Kastrup Copenhagen
$848Scandinavian Airlines
Wed, Nov 4 - Wed, Nov 18
British Airways Logo
12:45 pm - 4:10 pmLHR  London Heathrow-SAN San Diego
11h 25mnonstop
British Airways Logo
4:30 pm - 1:35 pmSAN  San Diego-LHR London Heathrow
13h 05m1 stop Phoenix Sky Harbor Intl
$860British Airways
Wed, Nov 4 - Wed, Nov 18
British Airways Logo
12:45 pm - 4:10 pmLHR  London Heathrow-SAN San Diego
11h 25mnonstop
British Airways Logo
4:30 pm - 1:35 pmSAN  San Diego-LHR London Heathrow
13h 05m1 stop Phoenix Sky Harbor Intl
$860British Airways
Tue, Nov 17 - Tue, Nov 24
British Airways Logo
11:50 am - 8:35 pmLHR  London Heathrow-SAN San Diego
16h 45m1 stop Dallas/Fort Worth
British Airways Logo
6:00 pm - 12:40 pmSAN  San Diego-LHR London Heathrow
10h 40mnonstop
$866British Airways
Mon, Nov 16 - Wed, Dec 2
American Airlines Logo
8:20 am - 3:41 pmLHR  London Heathrow-SAN San Diego
15h 21m1 stop Dallas/Fort Worth
American Airlines Logo
6:00 pm - 12:40 pmSAN  San Diego-LHR London Heathrow
10h 40mnonstop
$916American Airlines
Mon, Nov 16 - Wed, Dec 2
American Airlines Logo
11:50 am - 7:09 pmLHR  London Heathrow-SAN San Diego
15h 19m1 stop Dallas/Fort Worth
American Airlines Logo
11:34 am - 8:35 amSAN  San Diego-LHR London Heathrow
13h 01m1 stop Chicago O'Hare Intl
$916American Airlines
Mon, Nov 16 - Wed, Dec 2
American Airlines Logo
8:20 am - 3:41 pmLHR  London Heathrow-SAN San Diego
15h 21m1 stop Dallas/Fort Worth
American Airlines Logo
6:00 pm - 12:40 pmSAN  San Diego-LHR London Heathrow
10h 40mnonstop
$917American Airlines
Booking Insights

Price, demand and travel trends for London Heathrow Airport to San Diego flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

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

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from London Heathrow Airport to San Diego. It’s 7% cheaper than the average day, while Sunday is the most expensive, with prices 13% higher.

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

•January is the cheapest month to fly from London Heathrow Airport to San Diego at $744 round-trip.
•August ($1,216) and July ($1,170) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 63% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

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

Flights from London Heathrow Airport to San Diego are cheapest 18 weeks before departure. Booking in this window typically costs about 28% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Heathrow to San Diego

 
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.

Key details for London Heathrow Airport to San Diego flights

Low season

February

Cheapest flight

$551
Beat the crowds with an average 36% drop in travelers.
The most popular month to fly with an average 31% increase in travelers.
One-way 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

Flights from Heathrow to San Diego: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from Heathrow to San Diego 
Verified travelerFlew with British Airways-Aug 2026
Ensure enough time between connections if you have one! Heathrow is a great and efficient airport but it’s big! Be kind! Everyone is there doing their best to help passengers!
Verified travelerFlew with British Airways-Sep 2024
Flight overall is good. Service is very good. Bring yourself some snacks, in case the food isn’t up to your taste.

Your London Heathrow Airport to San Diego flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What are the earliest and latest flights from London Heathrow Airport to San Diego?

    These are the earliest and latest flight times available from London Heathrow Airport to San Diego:

    • Earliest: departs at 11:35 am and lands at 10:59 pm
    • Latest: departs at 2:30 pm and lands at 1:54 am.

    The flight takes about 11h 24m.

  • What cabin classes can I book on flights from London Heathrow Airport to San Diego?

    Three cabin classes are available on flights from London Heathrow Airport to San Diego:

    • Economy Class
    • Premium Economy Class
    • Business Class

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

    A nonstop flight from London Heathrow Airport to San Diego takes 11h 24m, covering 5,469 miles.

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

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a London Heathrow Airport to San Diego flight?

    Round-trip flights from London Heathrow Airport to San Diego range from $812 to $1,180, with an average of $954 over the past 12 months. Anything below $812 counts as a good deal.

  • How expensive are last-minute London Heathrow Airport to San Diego flights?

    Last-minute fares on this route (booked within two weeks of departure) run 19% above the $954 route average. Book 18 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from London Heathrow Airport to San Diego?

    On this route, layover flights are cheaper than nonstop options on average. Layover fares average $573 round-trip via Houston George Bush Intcntl (IAH), compared to $998 for nonstop.

  • How does on-time performance compare across airlines flying from London Heathrow Airport to San Diego?

    British Airways is the only airline operating London Heathrow Airport to San Diego flights. 84% of its flights are on time.

  • What is the standard checked-bag allowance on flights from London Heathrow Airport to San Diego?

    There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $56–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from London Heathrow Airport to San Diego?

    The Boeing 777 family is used most often on this route, operated mainly by British Airways and American Airlines. Other aircraft seen on the route include Boeing 777-300ER variants.

  • How are flight departures from London Heathrow Airport to San Diego spread across the day?

    Afternoon is the busiest departure period on London Heathrow Airport to San Diego flights, with 100% of flights leaving in that window. Morning departures account for 0%, evening flights for 0%, and night flights for 0%.

  • Have flight prices from London Heathrow Airport to San Diego changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $844 to $7,528. That means the highest observed fare was about 9x higher than the lowest one.

  • How are flight prices from London Heathrow Airport to San Diego looking right now?

    One-way fares from London Heathrow Airport to San Diego are currently lower than usual. Average one-way flight prices are about $576, which is 24% below the typical average for this route.

  • What car rental options are available at San Diego Airport (SAN)?

    San Diego Airport (SAN) hosts 5 major car rental companies, with daily rates starting from around $14 for economy cars. Top options include:

    • Dollar
    • Payless
    • Europcar
    • Thrifty
    • Fox

  • Which airports can I use when flying from London Heathrow Airport to San Diego?

    Flights from London Heathrow Airport to San Diego usually depart from London Heathrow (LHR) and arrive at San Diego (SAN).

  • What time of day has the fewest delays on flights from London Heathrow Airport to San Diego?

    Morning flights have the fewest delays on this route, while afternoon departures tend to have the most.

  • At what point is a flight considered delayed from London Heathrow Airport to San Diego?

    A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the London Heathrow Airport to San Diego route, 16% of flights were delayed in the past 3 months, with delays averaging 2h 22m.

  • Which airports do connecting flights from London Heathrow Airport to San Diego pass through?

    One-stop flights from London Heathrow Airport to San Diego most commonly connect through:

    • Denver Intl (DEN) - 27% of one-stop connections
    • New York John F Kennedy Intl (JFK) - 27% of one-stop connections
    • Seattle/Tacoma Intl (SEA) - 17% of one-stop connections
    • Amsterdam Schiphol (AMS) - 5% of one-stop connections

  • Can I save money by using flexible dates for flights from London Heathrow Airport to San Diego?

    Yes. Flexible dates can save you up to 18% on flights from London Heathrow Airport to San Diego. Tuesday is the cheapest departure day at $895 round-trip on average, while Sunday is the most expensive at $1,081, a difference of $186.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • What airlines fly from London Heathrow Airport to San Diego?

    Only British Airways operates flights between London Heathrow Airport and San Diego.

  • How much time can I save by choosing a different layover airport from London Heathrow Airport to San Diego?

    Flying via Amsterdam Schiphol (AMS) gives the shortest average 1-stop total travel time at 13h 10m, compared with 13h 21m via Denver Intl (DEN) and 13h 43m via Phoenix Sky Harbor Intl (PHX).

  • What is the time difference between London Heathrow Airport and San Diego?

    San Diego is 8 hours behind London Heathrow Airport (Pacific Time vs British Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in San Diego?

    Some of the most popular sights in San Diego are Gaslamp Quarter, San Diego Convention Center and SeaWorld San Diego. These are among the most viewed places in San Diego on KAYAK.

  • Which airlines offer extra legroom and free seat selection on London Heathrow Airport to San Diego flights?

    Among airlines operating London Heathrow Airport to San Diego flights:

    • British Airways: offers free seat selection
    • American Airlines: offers free seat selection
    • Iberia: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on London Heathrow Airport to San Diego flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • British Airways: a cabin bag and a checked bag in Economy Class
    • American Airlines: a cabin bag and a checked bag in Economy Class
    • Iberia: a cabin bag and a checked bag in Economy Class

    Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.

Your guide to booking London Heathrow Airport to San Diego flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Sunday. On this route, Tuesday flights average $895, about $186 less than Sunday fares (17% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 18 weeks before you fly. On this route, that window historically saves about 28% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your London Heathrow Airport to San Diego trip for January. Fares historically average $744 round-trip in that month - typically $472 less than the most expensive month, which is August (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Houston George Bush Intcntl Airport (IAH) can be cheaper than flying direct. The cheapest layover option averages $573 round-trip on this route - about $425 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to San Diego Airport.

    • Courtyard by Marriott San Diego Downtown Little Italy
    • Bay Club Hotel & Marina
    • Sheraton San Diego Resort

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

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

More options for your flight from Heathrow to San Diego

Complete your trip to San Diego with a hotel stay or car rental