Cheap flights from London Heathrow Airport to San Diego from £417
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAN
7 Nov — 14 Nov1
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 January, booked 37 days in advance, depart on a Tuesday or Monday and return on a Monday
Cheap flight deals from Heathrow to San Diego
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
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 8 October 2026.
Tue 3/1110:20 -
2 stops20h 23m
Thu 12/1115:59 -
2 stops17h 41m
Deal found 5/10£641
Mon 9/1114:45 -
1 stop16h 52m
Sun 15/1106:15 -
1 stop22h 05m
Deal found 6/10£642
Mon 9/1114:30 -
1 stop33h 55m
Mon 23/1111:20 -
2 stops16h 30m
Deal found 4/10£643
Thu 5/1110:20 -
2 stops20h 23m
Sat 14/1115:59 -
2 stops17h 41m
Deal found 5/10£643
Mon 2/1106:20 -
2 stops18h 02m
Thu 12/1112:15 -
1 stop14h 40m
Deal found 5/10£644
Thu 19/1114:45 -
1 stop15h 50m
Thu 26/1109:15 -
1 stop19h 05m
Deal found 5/10£645
Wed 4/1106:35 -
1 stop17h 10m
Wed 18/1110:40 -
2 stops15h 45m
Deal found 3/10£646
Wed 4/1109:00 -
2 stops19h 24m
Wed 18/1106:20 -
2 stops18h 05m
Deal found 3/10£647
Sat 31/1014:45 -
1 stop27h 28m
Tue 10/1113:48 -
1 stop14h 32m
Deal found 6/10£648
Wed 4/1109:00 -
2 stops19h 24m
Wed 11/1114:08 -
1 stop13h 52m
Deal found 7/10£649
Mon 9/1106:20 -
2 stops20h 18m
Sun 15/1120:20 -
3 stops33h 25m
Deal found 5/10£649
Wed 4/1112:45 -
Nonstop11h 25m
Wed 18/1116:30 -
1 stop13h 05m
Deal found 3/10£650
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 8 October 2026.
Tue 1/1209:00 -
2 stops19h 08m
Wed 9/1212:10 -
2 stops17h 20m
Deal found 5/10£649
Mon 9/1106:40 -
2 stops25h 19m
Sun 15/1106:20 -
2 stops27h 20m
Deal found 5/10£653
Mon 9/1115:40 -
1 stop16h 14m
Sun 15/1118:00 -
Nonstop10h 40m
Deal found 6/10£716
Sat 21/1106:30 -
1 stop13h 40m
Fri 27/1106:30 -
2 stops18h 30m
Deal found 3/10£736
Sat 21/1120:35 -
2 stops33h 45m
Fri 27/1111:00 -
2 stops15h 50m
Deal found 7/10£736
Mon 9/1106:35 -
1 stop17h 10m
Sun 15/1122:30 -
1 stop23h 25m
Deal found 5/10£652
Thu 5/1106:30 -
1 stop13h 40m
Sat 14/1106:15 -
2 stops17h 35m
Deal found 5/10£738
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 8 October 2026.
Wed 4/1112:45 -
Nonstop11h 25m
Mon 9/1118:00 -
Nonstop10h 40m
Deal found 7/10£661
Tue 1/1212:45 -
Nonstop11h 25m
Wed 9/1218:00 -
Nonstop10h 40m
Deal found 5/10£674
Thu 5/1112:45 -
Nonstop11h 25m
Mon 9/1118:00 -
Nonstop10h 40m
Deal found 6/10£680
Wed 4/1112:45 -
Nonstop11h 25m
Wed 11/1118:00 -
Nonstop10h 40m
Deal found 5/10£681
Tue 10/1112:45 -
Nonstop11h 25m
Tue 17/1118:00 -
Nonstop10h 40m
Deal found 4/10£683
Mon 16/1112:45 -
Nonstop11h 25m
Wed 2/1218:00 -
Nonstop10h 40m
Deal found 5/10£691
Mon 16/1112:45 -
Nonstop11h 25m
Wed 2/1218:00 -
Nonstop10h 40m
Deal found 6/10£709
Mon 9/1112:45 -
Nonstop11h 25m
Mon 23/1118:00 -
Nonstop10h 40m
Deal found 4/10£711
Thu 5/1112:45 -
Nonstop11h 25m
Sun 15/1118:00 -
Nonstop10h 40m
Deal found 7/10£711
Last-minute flights from Heathrow to San Diego
Discover last-minute flight deals from Heathrow to San Diego. Data last updated 8 October 2026 and is based on user searches.
Sat 31/1014:45 -
1 stop27h 28m
Tue 10/1113:48 -
1 stop14h 32m
Deal found 6/10£648
Mon 2/1106:20 -
2 stops18h 02m
Thu 12/1112:15 -
1 stop14h 40m
Deal found 5/10£644
Tue 3/1110:20 -
2 stops20h 23m
Thu 12/1115:59 -
2 stops17h 41m
Deal found 5/10£641
Wed 4/1106:35 -
1 stop17h 10m
Wed 18/1110:40 -
2 stops15h 45m
Deal found 3/10£646
Wed 4/1109:00 -
2 stops19h 24m
Wed 18/1106:20 -
2 stops18h 05m
Deal found 3/10£647
Wed 4/1109:00 -
2 stops19h 24m
Wed 11/1114:08 -
1 stop13h 52m
Deal found 7/10£649
Wed 4/1112:45 -
Nonstop11h 25m
Wed 18/1116:30 -
1 stop13h 05m
Deal found 3/10£650
Thu 5/1110:20 -
2 stops20h 23m
Sat 14/1115:59 -
2 stops17h 41m
Deal found 5/10£643
Mon 9/1114:45 -
1 stop16h 52m
Sun 15/1106:15 -
1 stop22h 05m
Deal found 6/10£642
Mon 9/1114:30 -
1 stop33h 55m
Mon 23/1111:20 -
2 stops16h 30m
Deal found 4/10£643
Mon 9/1106:20 -
2 stops20h 18m
Sun 15/1120:20 -
3 stops33h 25m
Deal found 5/10£649
Thu 19/1114:45 -
1 stop15h 50m
Thu 26/1109:15 -
1 stop19h 05m
Deal found 5/10£645
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 8 October 2026.
Tue 1/1206:35 -
1 stop17h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 5/10£417
Tue 5/120:35 -
3 stops51h 56m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/10£417
Mon 30/1120:25 -
1 stop23h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/10£419
Fri 4/1214:50 -
1 stop29h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/10£421
Thu 10/1214:50 -
1 stop29h 50m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/10£422
Sat 12/1209:20 -
1 stop18h 59m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/10£423
Sun 6/1216:40 -
1 stop31h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/10£424
Thu 3/1214:45 -
2 stops35h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 5/10£426
Wed 25/1109:00 -
3 stops32h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/10£427
Wed 9/1212:45 -
Nonstop11h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 5/10£428
Sat 31/1008:05 -
1 stop19h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/10£429
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 8 October 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 7,457,451 searches. Data last updated 8 October 2026.
Use the filters below to find and compare flights from London Heathrow Airport to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Wed 2/12
06:35-15:45
1 stop17h 10m
San Diego
Wed 31/12
00:00-09:00
Nonstop0h 00m
£417
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Sun 6/12
16:40-15:45
1 stop31h 05m
San Diego
Wed 31/12
00:00-09:00
Nonstop0h 00m
£424
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Sat 5/12
08:05-19:13
1 stop19h 08m
San Diego
Wed 31/12
00:00-09:00
Nonstop0h 00m
£432
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Fri 6/11
08:05-20:22
1 stop20h 17m
San Diego
Wed 31/12
00:00-09:00
Nonstop0h 00m
£433
Fastest return journey
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Wed 9/12
12:45-16:10
Nonstop11h 25m
San Diego
Wed 31/12
00:00-09:00
Nonstop0h 00m
£453
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Tue 8/12
12:45-16:10
Nonstop11h 25m
San Diego
Wed 31/12
00:00-09:00
Nonstop0h 00m
£453
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Wed 2/12
12:45-16:10
Nonstop11h 25m
San Diego
Wed 31/12
00:00-09:00
Nonstop0h 00m
£453
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Tue 1/12
12:45-16:10
Nonstop11h 25m
San Diego
Wed 31/12
00:00-09:00
Nonstop0h 00m
£453
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Fri 4/12
07:30-00:19
3 stops24h 49m
San Diego
Wed 31/12
00:00-09:00
Nonstop0h 00m
£464
LondonSan Diego
LHR London Heathrow - SAN San Diego
LHRSAN
London Heathrow
Tue 5/1
16:35-12:08
1 stop27h 33m
San Diego
Wed 31/12
00:00-09:00
Nonstop0h 00m
£469
Flights are sorted by cheapest return flights first.
Deals found on 5/10
Showing 1-10 of 17 resultsSorted by cheapest first
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?
The best time to book flights from London Heathrow Airport to San Diego is 36 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Diego (average of £522). Flying from London Heathrow Airport to San Diego in August is currently the most expensive (average of £1,027). 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 8 October 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.
How much does it cost for a return flight from London Heathrow Airport to San Diego?
Airfare is typical for this route at the moment.
London Heathrow Airport to San Diego flights typically cost between £619 and £817 in January.The cheapest return price found within the last 5 days was £638 on Multiple Airlines (17 Jan–24 Jan).
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 8 October 2026.
The most flights from LHR to SAN are scheduled on a Monday (11 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (5 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 142 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 Saturday 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.
New York (JFK) – chosen by Cheapflights users on 40% 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.
Salt Lake City (SLC) is the most affordable one-stop option, with an average return flight price of £586.
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 Salt Lake City (SLC) have the shortest average one-way travel time for one-stop routes: 13h 51m.
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 Salt Lake City (SLC) offer the fastest connection on this route, with an average stopover time of 1h 05m.
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 8 October 2026.
Read reviews from past customers who have flown with United Airlines,JetBlue, 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 premium economy seats were very comfortable and the attention and service by the flight attendants was superb.
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 10 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 10 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?
United Airlines and Scandinavian Airlines can get you from London Heathrow Airport to San Diego in just under 19h 08m. Your travel time can differ by up to 6h 11m. 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 United Airlines is currently your cheapest option to San Diego, with prices starting at £427. Additional return tickets that might be worth considering are offered by JetBlue and Lufthansa, with the lowest prices starting at £429 and £433, respectively. You may be able to fly from London Heathrow Airport to San Diego for 43% 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 £205. However, be on the lookout for offers from British Airways and Finnair, 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 Finnair (82%), Iberia (82%) or American Airlines (67%) 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 £571. While the most popular route (London Heathrow - San Diego) can be booked for £534 on average, our data indicates £1,673 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Diego (average of £522). Flying from London Heathrow Airport to San Diego in August is currently the most expensive (average of £1,027). 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
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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 8 October 2026.
Explore flights to San Diego departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 8 October 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 7,457,451 searches. Data last updated 8 October 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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