Cheap flights from London Heathrow Airport to San Diego from £301
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAN
25 Mar — 1 Apr1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to San Diego are usually found in February or September, booked 57 days in advance, depart on a Monday or Wednesday and return on a Monday
Cheap flight deals from Heathrow to San Diego
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Cheapest flights from Heathrow to San Diego
Explore the most affordable flight options available from Heathrow to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 February 2026.
Thu 5/307:25
LHR
-
SAN
1 stop20h 35m
JetBlue
Mon 9/321:10
SAN
-
LHR
1 stop17h 30m
JetBlue
Deal found 19/2£446
Tue 3/307:25
LHR
-
SAN
1 stop20h 03m
JetBlue
Tue 10/312:49
SAN
-
LHR
1 stop13h 41m
JetBlue
Deal found 19/2£447
Sat 14/308:05
LHR
-
SAN
1 stop18h 47m
JetBlue
Thu 19/320:59
SAN
-
LHR
1 stop26h 56m
JetBlue
Deal found 20/2£455
Tue 17/307:25
LHR
-
SAN
1 stop33h 08m
JetBlue
Fri 20/320:59
SAN
-
LHR
1 stop26h 56m
JetBlue
Deal found 20/2£455
Fri 6/312:50
LHR
-
SAN
Nonstop11h 20m
British Airways
Tue 17/319:00
SAN
-
LHR
Nonstop10h 35m
British Airways
Deal found 19/2£461
Sat 28/208:05
LHR
-
SAN
1 stop19h 55m
JetBlue
Sun 15/321:05
SAN
-
LHR
1 stop16h 40m
JetBlue
Deal found 21/2£464
Fri 6/308:05
LHR
-
SAN
1 stop19h 53m
JetBlue
Sun 15/321:05
SAN
-
LHR
1 stop16h 40m
JetBlue
Deal found 21/2£481
Sat 28/212:20
LHR
-
SAN
1 stop31h 19m
JetBlue
Mon 23/320:59
SAN
-
LHR
1 stop26h 56m
JetBlue
Deal found 19/2£483
Thu 19/307:25
LHR
-
SAN
1 stop19h 27m
JetBlue
Mon 23/321:05
SAN
-
LHR
1 stop17h 35m
JetBlue
Deal found 20/2£486
Wed 4/309:20
LHR
-
SAN
1 stop18h 08m
JetBlue
Sun 8/321:10
SAN
-
LHR
1 stop16h 35m
JetBlue
Deal found 21/2£489
Tue 10/307:25
LHR
-
SAN
1 stop19h 33m
JetBlue
Sun 13/920:55
SAN
-
LHR
1 stop25h 35m
JetBlue
Deal found 22/2£500
Best flights from Heathrow to San Diego
Discover carefully curated flight deals from Heathrow to San Diego that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 23 February 2026.
Thu 5/307:25
LHR
-
SAN
1 stop20h 35m
JetBlue
Mon 9/321:10
SAN
-
LHR
1 stop17h 30m
JetBlue
Deal found 22/2£446
Wed 22/407:25
LHR
-
SAN
1 stop16h 00m
United Airlines
Sun 26/420:37
SAN
-
LHR
2 stops16h 03m
United Airlines
Deal found 21/2£535
Mon 27/412:15
LHR
-
SAN
1 stop16h 28m
British Airways
Sun 3/519:40
SAN
-
LHR
Nonstop10h 40m
British Airways
Deal found 20/2£585
Thu 14/508:40
LHR
-
SAN
2 stops21h 52m
Delta
Sat 16/522:00
SAN
-
LHR
1 stop32h 35m
Delta
Deal found 20/2£589
Sat 30/506:40
LHR
-
SAN
3 stops24h 35m
Scandinavian Airlines
Tue 2/607:00
SAN
-
LHR
2 stops26h 40m
Scandinavian Airlines
Deal found 19/2£641
Mon 13/413:05
LHR
-
SAN
1 stop15h 07m
United Airlines
Tue 28/412:40
SAN
-
LHR
1 stop13h 00m
United Airlines
Deal found 19/2£559
Wed 8/710:00
LHR
-
SAN
1 stop15h 41m
United Airlines
Wed 22/709:00
SAN
-
LHR
1 stop14h 25m
United Airlines
Deal found 19/2£639
Wed 8/714:50
LHR
-
SAN
1 stop13h 56m
United Airlines
Thu 16/716:07
SAN
-
LHR
1 stop12h 13m
United Airlines
Deal found 19/2£639
Wed 1/711:25
LHR
-
SAN
1 stop17h 21m
United Airlines
Sun 12/722:30
SAN
-
LHR
1 stop14h 10m
United Airlines
Deal found 19/2£647
Sat 4/710:00
LHR
-
SAN
1 stop15h 41m
United Airlines
Thu 9/709:00
SAN
-
LHR
1 stop14h 25m
United Airlines
Deal found 19/2£668
Direct flights from Heathrow to San Diego
Explore direct flight options from Heathrow to San Diego based on user searches, and compare prices and availability for your desired travel dates. Data last updated 23 February 2026.
Fri 6/312:50
LHR
-
SAN
Nonstop11h 20m
British Airways
Tue 17/319:00
SAN
-
LHR
Nonstop10h 35m
British Airways
Deal found 19/2£461
Tue 21/411:35
LHR
-
SAN
Nonstop11h 20m
British Airways
Tue 5/519:40
SAN
-
LHR
Nonstop10h 40m
British Airways
Deal found 21/2£538
Thu 30/411:35
LHR
-
SAN
Nonstop11h 20m
British Airways
Mon 4/516:45
SAN
-
LHR
Nonstop10h 45m
British Airways
Deal found 19/2£566
Wed 22/411:35
LHR
-
SAN
Nonstop11h 20m
British Airways
Sun 26/416:45
SAN
-
LHR
Nonstop10h 45m
British Airways
Deal found 21/2£570
Tue 10/312:50
LHR
-
SAN
Nonstop11h 20m
American Airlines
Tue 17/319:00
SAN
-
LHR
Nonstop10h 35m
American Airlines
Deal found 20/2£575
Sat 2/514:30
LHR
-
SAN
Nonstop11h 20m
British Airways
Wed 6/516:45
SAN
-
LHR
Nonstop10h 45m
British Airways
Deal found 19/2£588
Fri 6/312:50
LHR
-
SAN
Nonstop11h 20m
British Airways
Mon 9/319:00
SAN
-
LHR
Nonstop10h 35m
British Airways
Deal found 20/2£596
Mon 4/514:30
LHR
-
SAN
Nonstop11h 20m
British Airways
Sun 10/516:45
SAN
-
LHR
Nonstop10h 45m
British Airways
Deal found 20/2£598
Thu 14/511:35
LHR
-
SAN
Nonstop11h 20m
British Airways
Tue 19/519:40
SAN
-
LHR
Nonstop10h 40m
British Airways
Deal found 20/2£601
Sun 19/414:25
LHR
-
SAN
Nonstop11h 20m
Iberia
Mon 4/519:40
SAN
-
LHR
Nonstop10h 40m
Iberia
Deal found 22/2£602
Tue 10/312:50
LHR
-
SAN
Nonstop11h 20m
American Airlines
Sun 13/916:45
SAN
-
LHR
Nonstop10h 45m
American Airlines
Deal found 22/2£606
Sat 25/411:35
LHR
-
SAN
Nonstop11h 20m
American Airlines
Wed 29/419:40
SAN
-
LHR
Nonstop10h 40m
American Airlines
Deal found 20/2£621
Last-minute flights from Heathrow to San Diego
Discover last-minute flight deals from Heathrow to San Diego. Data last updated 23 February 2026 and is based on user searches.
Sat 28/208:05
LHR
-
SAN
1 stop19h 55m
JetBlue
Sun 15/321:05
SAN
-
LHR
1 stop16h 40m
JetBlue
Deal found 21/2£464
Sat 28/212:20
LHR
-
SAN
1 stop31h 19m
JetBlue
Mon 23/320:59
SAN
-
LHR
1 stop26h 56m
JetBlue
Deal found 19/2£483
Tue 3/307:25
LHR
-
SAN
1 stop20h 03m
JetBlue
Tue 10/312:49
SAN
-
LHR
1 stop13h 41m
JetBlue
Deal found 19/2£447
Wed 4/309:20
LHR
-
SAN
1 stop18h 08m
JetBlue
Sun 8/321:10
SAN
-
LHR
1 stop16h 35m
JetBlue
Deal found 21/2£489
Thu 5/307:25
LHR
-
SAN
1 stop20h 35m
JetBlue
Mon 9/321:10
SAN
-
LHR
1 stop17h 30m
JetBlue
Deal found 19/2£446
Fri 6/312:50
LHR
-
SAN
Nonstop11h 20m
British Airways
Tue 17/319:00
SAN
-
LHR
Nonstop10h 35m
British Airways
Deal found 19/2£461
Fri 6/308:05
LHR
-
SAN
1 stop19h 53m
JetBlue
Thu 12/310:44
SAN
-
LHR
1 stop15h 46m
JetBlue
Deal found 21/2£481
Tue 10/307:25
LHR
-
SAN
1 stop19h 33m
JetBlue
Sun 13/920:55
SAN
-
LHR
1 stop25h 35m
JetBlue
Deal found 22/2£500
Sat 14/308:05
LHR
-
SAN
1 stop18h 47m
JetBlue
Thu 19/320:59
SAN
-
LHR
1 stop26h 56m
JetBlue
Deal found 20/2£455
Tue 17/307:25
LHR
-
SAN
1 stop33h 08m
JetBlue
Fri 20/320:59
SAN
-
LHR
1 stop26h 56m
JetBlue
Deal found 20/2£455
Thu 19/307:25
LHR
-
SAN
1 stop19h 27m
JetBlue
Mon 23/321:05
SAN
-
LHR
1 stop17h 35m
JetBlue
Deal found 20/2£486
One-way flights from Heathrow to San Diego
Search for one-way flight options from Heathrow to San Diego. Find affordable one-way fares based on user searches. Data last updated 23 February 2026.
Mon 16/314:50
LHR
-
SAN
2 stops29h 23m
Multiple Airlines
Deal found 20/2£301
Tue 17/314:50
LHR
-
SAN
2 stops29h 23m
Multiple Airlines
Deal found 22/2£310
Wed 15/420:50
LHR
-
SAN
3 stops48h 02m
Multiple Airlines
Deal found 20/2£319
Wed 4/314:50
LHR
-
SAN
3 stops57h 23m
Multiple Airlines
Deal found 19/2£329
Tue 14/406:00
LHR
-
SAN
2 stops20h 51m
Austrian Airlines
Deal found 20/2£343
Wed 11/307:25
LHR
-
SAN
1 stop19h 33m
JetBlue
Deal found 21/2£344
Wed 11/314:50
LHR
-
SAN
2 stops33h 48m
Multiple Airlines
Deal found 19/2£346
Wed 13/506:55
LHR
-
SAN
1 stop16h 30m
Lufthansa
Deal found 21/2£348
Mon 13/420:50
LHR
-
SAN
3 stops43h 25m
Multiple Airlines
Deal found 20/2£349
Mon 4/506:55
LHR
-
SAN
1 stop16h 30m
Lufthansa
Deal found 19/2£349
Tue 21/407:25
LHR
-
SAN
1 stop16h 00m
Lufthansa
Deal found 22/2£350
Find flight deals from Heathrow to San Diego
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 23 February 2026.
Customise your flight search to find flights from Heathrow to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 23 February 2026.
Use the filters below to find and compare flights from London Heathrow Airport to San Diego that are best for you.
Fly from
Heathrow
Fly to
San Diego
Route
Depart
Return
Price
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
Thu 5/3
07:25-20:00
1 stop20h 35m
San Diego
Mon 9/3
21:10-21:40
1 stop17h 30m
£446
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
Wed 22/4
07:25-15:25
1 stop16h 00m
San Diego
Sun 26/4
20:37-20:40
2 stops16h 03m
£535
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
Mon 13/4
13:05-20:12
1 stop15h 07m
San Diego
Tue 28/4
12:40-09:40
1 stop13h 00m
£559
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
Mon 27/4
12:15-20:43
1 stop16h 28m
San Diego
Sun 3/5
19:40-14:20
Nonstop10h 40m
£585
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
Thu 14/5
08:40-22:32
2 stops21h 52m
San Diego
Sat 16/5
22:00-14:35
1 stop32h 35m
£589
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
Wed 8/7
10:00-17:41
1 stop15h 41m
San Diego
Wed 22/7
09:00-07:25
1 stop14h 25m
£639
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
Wed 8/7
14:50-20:46
1 stop13h 56m
San Diego
Thu 16/7
16:07-12:20
1 stop12h 13m
£639
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
Sat 30/5
06:40-23:15
3 stops24h 35m
San Diego
Tue 2/6
07:00-17:40
2 stops26h 40m
£641
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
Wed 1/7
11:25-20:46
1 stop17h 21m
San Diego
Sun 12/7
22:30-20:40
1 stop14h 10m
£647
LondonSan Diego
LHR - SAN
LHRSAN
London Heathrow
Sat 4/7
10:00-17:41
1 stop15h 41m
San Diego
Thu 9/7
09:00-07:25
1 stop14h 25m
£668
Flights are sorted by cheapest return flights first.
Deals found on 19/2
Showing 1-10 of 19 results
1
2
Best time to book a flight from Heathrow to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego from Heathrow with our price prediction graph.
LHR-SAN
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to San Diego
Prices
Airlines
Delays
More
How far ahead should I book a flight from London Heathrow Airport to San Diego?
Use this chart to determine the optimal time to book a return flight from Heathrow to San Diego. Price data was last updated on 20 February 2026.
The best time to book flights from London Heathrow Airport to San Diego is 57 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from London Heathrow Airport to San Diego?
Currently, December is the cheapest month in which you can book a flight from London Heathrow Airport to San Diego (average of £329). Flying from London Heathrow Airport to San Diego in July is currently the most expensive (average of £411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LHR to SAN?
Find hourly flight availability from Heathrow to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 23 February 2026.
When flying from London Heathrow Airport to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from London Heathrow Airport to San Diego
Explore weekly flight availability from Heathrow to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 23 February 2026.
The most flights from LHR to SAN are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).
How often are flights from London to San Diego delayed?
About 16% of weekly flights between London and San Diego have experienced delays in the past year, with the average delay time being 154 minutes.
What is the most punctual flight time for London to San Diego flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to San Diego flights?
Over the past year, British Airways have had the lowest number of delays on this route, with just 16% of flights being delayed.
What’s the top stopover airport for flights from London Heathrow Airport to San Diego?
Share of one-stop return flights from London Heathrow Airport to San Diego chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Denver (DEN) – chosen by Cheapflights users on 39% of one-stop itineraries from London Heathrow Airport to San Diego on Cheapflights.
What’s the cheapest stopover airport for flights from London Heathrow Airport to San Diego?
Average return fare for one-stop flights from London Heathrow Airport to San Diego, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Seattle (SEA) is the most affordable one-stop option, with an average return flight price of £475.
What’s the fastest stopover option from London Heathrow Airport to San Diego?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport to San Diego, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 13h 32m.
Which airport typically offers the quickest stopover for flights from London Heathrow Airport to San Diego?
Average stopover duration for one-stop one-way flights from London Heathrow Airport to San Diego, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 01m.
Reviews of airlines servicing San Diego
Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated 23 February 2026.
Read reviews from past customers who have flown with Virgin Atlantic, United Airlines, andAmerican Airlines
from London Heathrow Airport to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Related info for your journey
Find useful and relevant information for your journey from Heathrow to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly into for flights to San Diego from London Heathrow?
San Diego (SAN) is the airport you will fly into if you book a flight from London Heathrow to San Diego. You should not have trouble finding flights to San Diego from London Heathrow; the airport handles an average of 6 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 11 airlines have flights to the San Diego airport from London Heathrow. It is only a 2.6 mi journey from San Diego (SAN) to San Diego’s city center.
How long is the flight from London Heathrow Airport to San Diego?
JetBlue, United Airlines, and British Airways can get you from London Heathrow Airport to San Diego in just under 16h. Your travel time can differ by up to 4h 35m. London Heathrow Airport and San Diego are separated by a distance of 5469 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to San Diego round-trip?
Flying on Air Canada is currently your cheapest option to San Diego, with prices starting at £385. Additional return tickets that might be worth considering are offered by Lufthansa and United Airlines, with the lowest prices starting at £418 and £421, respectively. You may be able to fly from London Heathrow Airport to San Diego for 35% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from London Heathrow Airport to San Diego one-way?
The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as £308. However, be on the lookout for offers from Iberia and British Airways, as they are both options that can get you from London Heathrow Airport to San Diego for a low price.
What are the most reliable airlines from London Heathrow Airport to San Diego?
No one likes to see their flight delayed. When booking a flight from London Heathrow Airport to San Diego consider choosing American Airlines (70%), Alaska Airlines (70%) or Aer Lingus (70%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from London Heathrow Airport to San Diego?
Looking at all options, your cheapest flight can be booked for £373. While the most popular route (London Heathrow - San Diego) can be booked for £413 on average, our data indicates £1,975 when flying from London Heathrow Airport to San Diego.
Can I find deals for business class flights from Heathrow to San Diego?
Yes. Cheapflights offers flight deals from Heathrow to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London Heathrow Airport to San Diego?
Currently, December is the cheapest month in which you can book a flight from London Heathrow Airport to San Diego (average of £329). Flying from London Heathrow Airport to San Diego in July is currently the most expensive (average of £411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Book flights to San Diego if you plan to visit one of these locations
Coronado
El Cajon
Browse thousands of different options on Cheapflights for your next trip
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Fly from Heathrow to San Diego on these airlines
Choose from the following airlines for your flight from Heathrow to San Diego. Flights are based on user searches made on Cheapflights and were last updated on 23 February 2026.
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 23 February 2026.
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 23 February 2026.
Discover the top 10 airlines that operate flights from Heathrow to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 23 February 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Heathrow to San Diego?
When you search for this flight from Heathrow to San Diego, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Heathrow to San Diego?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to San Diego.
Can Cheapflights find flights from Heathrow to San Diego with no change fees?
Need flexible booking options for your flight to San Diego from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Heathrow to San Diego become cheaper?
Not ready to book yet? You can track prices for flights from Heathrow to San Diego on Cheapflights with our Price Alert feature and get notified when better prices are available.
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