Cheap flights from San Diego to London Heathrow Airport from £228
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 14/11. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LHR
13 Sep — 20 Sep1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Diego to London Heathrow are usually found in November or February, booked 34 days in advance, depart on a Sunday or Monday and return on a Monday
Cheap flight deals from San Diego to Heathrow
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
Cheapest flights from San Diego to Heathrow
Explore the most affordable flight options available from San Diego to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 August 2026.
Sun 13/922:30 -
1 stop23h 55m
Tue 6/1006:30 -
1 stop13h 20m
Deal found 12/8£700
Mon 21/915:20 -
1 stop13h 45m
Wed 7/1008:40 -
2 stops18h 34m
Deal found 13/8£700
Sun 27/907:30 -
2 stops23h 05m
Wed 14/1006:15 -
2 stops21h 46m
Deal found 10/8£701
Sun 6/907:00 -
1 stop15h 30m
Thu 17/908:45 -
2 stops19h 51m
Deal found 9/8£702
Tue 15/906:15 -
2 stops16h 10m
Tue 6/1006:30 -
1 stop13h 20m
Deal found 14/8£703
Mon 5/1017:15 -
1 stop19h 30m
Fri 16/1006:30 -
2 stops24h 11m
Deal found 10/8£703
Mon 21/907:00 -
2 stops17h 35m
Wed 7/1017:40 -
1 stop26h 36m
Deal found 13/8£704
Mon 30/1118:00 -
Nonstop10h 40m
Sun 13/1210:35 -
1 stop16h 54m
Deal found 11/8£705
Wed 18/1106:50 -
2 stops19h 55m
Sun 6/1207:40 -
2 stops24h 49m
Deal found 11/8£706
Mon 21/913:38 -
1 stop13h 42m
Wed 7/1011:45 -
2 stops19h 06m
Deal found 12/8£706
Wed 16/907:30 -
1 stop14h 50m
Wed 7/1008:40 -
2 stops18h 34m
Deal found 12/8£707
Wed 30/916:45 -
Nonstop10h 45m
Wed 7/1011:35 -
Nonstop11h 20m
Deal found 11/8£708
Best flights from San Diego to Heathrow
Discover carefully curated flight deals from San Diego to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 August 2026.
Tue 22/919:40 -
Nonstop10h 40m
Tue 6/1014:25 -
1 stop15h 21m
Deal found 10/8£724
Sun 6/1206:20 -
2 stops27h 20m
Sat 12/1206:40 -
3 stops24h 17m
Deal found 14/8£804
Thu 27/813:34 -
1 stop18h 01m
Tue 1/909:55 -
2 stops18h 21m
Deal found 12/8£838
Sun 10/115:59 -
3 stops21h 36m
Wed 10/207:05 -
3 stops23h 50m
Deal found 9/8£806
Sat 19/1222:40 -
1 stop23h 45m
Fri 22/110:50 -
1 stop15h 52m
Deal found 11/8£923
Wed 16/915:00 -
2 stops19h 30m
Tue 6/1007:05 -
3 stops24h 41m
Deal found 9/8£907
Wed 16/916:45 -
Nonstop10h 45m
Wed 7/1014:30 -
Nonstop11h 20m
Deal found 10/8£1,092
Wed 30/907:30 -
2 stops24h 30m
Wed 7/1006:40 -
3 stops25h 06m
Deal found 12/8£910
Thu 10/910:56 -
2 stops23h 34m
Fri 18/906:40 -
3 stops25h 07m
Deal found 12/8£947
Sun 20/907:00 -
2 stops26h 40m
Thu 1/1021:05 -
3 stops28h 54m
Deal found 12/8£999
Mon 28/915:00 -
2 stops19h 30m
Mon 5/1006:40 -
3 stops25h 07m
Deal found 13/8£1,029
Direct flights from San Diego to Heathrow
Explore direct flight options from San Diego to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 14 August 2026.
Sun 27/919:40 -
Nonstop10h 40m
Wed 14/1011:35 -
Nonstop11h 20m
Deal found 10/8£701
Mon 21/919:40 -
Nonstop10h 40m
Wed 7/1014:30 -
Nonstop11h 20m
Deal found 14/8£702
Thu 28/118:00 -
Nonstop10h 40m
Tue 9/212:45 -
Nonstop11h 25m
Deal found 12/8£705
Thu 8/1016:45 -
Nonstop10h 45m
Mon 19/1011:35 -
Nonstop11h 20m
Deal found 10/8£706
Sun 6/1218:00 -
Nonstop10h 40m
Tue 15/1212:45 -
Nonstop11h 25m
Deal found 10/8£707
Wed 30/916:45 -
Nonstop10h 45m
Wed 7/1011:35 -
Nonstop11h 20m
Deal found 11/8£708
Wed 10/218:00 -
Nonstop10h 40m
Mon 15/212:45 -
Nonstop11h 25m
Deal found 10/8£715
Mon 5/1019:40 -
Nonstop10h 40m
Thu 15/1014:30 -
Nonstop11h 20m
Deal found 10/8£717
Mon 21/916:45 -
Nonstop10h 45m
Wed 7/1014:30 -
Nonstop11h 20m
Deal found 13/8£717
Last-minute flights from San Diego to Heathrow
Discover last-minute flight deals from San Diego to Heathrow. Data last updated 14 August 2026 and is based on user searches.
Sun 6/907:00 -
1 stop15h 30m
Thu 17/908:45 -
2 stops19h 51m
Deal found 9/8£702
Tue 8/907:00 -
1 stop19h 00m
Tue 15/906:30 -
2 stops17h 42m
Deal found 10/8£706
Sun 13/922:30 -
1 stop23h 55m
Tue 6/1006:30 -
1 stop13h 20m
Deal found 12/8£700
Tue 15/906:15 -
2 stops16h 10m
Tue 6/1006:30 -
1 stop13h 20m
Deal found 14/8£703
Wed 16/907:30 -
1 stop14h 50m
Wed 7/1008:40 -
2 stops18h 34m
Deal found 12/8£707
Mon 21/915:20 -
1 stop13h 45m
Wed 7/1008:40 -
2 stops18h 34m
Deal found 13/8£700
Mon 21/907:00 -
2 stops17h 35m
Wed 7/1017:40 -
1 stop26h 36m
Deal found 13/8£704
Mon 21/921:30 -
1 stop15h 15m
Fri 25/906:30 -
2 stops17h 42m
Deal found 13/8£705
Mon 21/913:38 -
1 stop13h 42m
Wed 7/1011:45 -
2 stops19h 06m
Deal found 12/8£706
Sun 27/907:30 -
2 stops23h 05m
Wed 14/1006:15 -
2 stops21h 46m
Deal found 10/8£701
Wed 30/916:45 -
Nonstop10h 45m
Wed 7/1011:35 -
Nonstop11h 20m
Deal found 11/8£708
One-way flights from San Diego to Heathrow
Search for one-way flight options from San Diego to Heathrow. Find affordable one-way fares based on user searches. Data last updated 14 August 2026.
Sat 14/1109:15 -
3 stops38h 50m
Deal found 14/8£228
Wed 11/1112:35 -
1 stop15h 15m
Deal found 12/8£228
Sat 19/917:54 -
3 stops37h 06m
Deal found 13/8£232
Mon 16/1119:45 -
3 stops28h 20m
Deal found 14/8£233
Tue 10/1118:00 -
Nonstop10h 40m
Deal found 11/8£237
Fri 8/122:30 -
2 stops38h 30m
Deal found 12/8£239
Tue 10/1111:08 -
1 stop14h 52m
Deal found 11/8£240
Tue 22/921:30 -
1 stop15h 15m
Deal found 14/8£241
Sun 20/921:30 -
1 stop15h 15m
Deal found 12/8£242
Fri 11/921:30 -
1 stop15h 15m
Deal found 14/8£244
Find flight deals from San Diego to Heathrow
Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Heathrow (LHR). 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 14 August 2026.
Customise your flight search to find flights from San Diego to Heathrow 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 14 August 2026.
Use the filters below to find and compare flights from San Diego to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Tue 22/9
19:40-14:20
Nonstop10h 40m
London Heathrow
Tue 6/10
14:25-21:46
1 stop15h 21m
£724
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Sun 6/12
06:20-17:40
2 stops27h 20m
London Heathrow
Sat 12/12
06:40-22:57
3 stops24h 17m
£804
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Sun 10/1
15:59-21:35
3 stops21h 36m
London Heathrow
Wed 10/2
07:05-22:55
3 stops23h 50m
£806
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Thu 27/8
13:34-15:35
1 stop18h 01m
London Heathrow
Tue 1/9
09:55-20:16
2 stops18h 21m
£838
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Wed 16/9
15:00-18:30
2 stops19h 30m
London Heathrow
Tue 6/10
07:05-23:46
3 stops24h 41m
£907
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Wed 30/9
07:30-16:00
2 stops24h 30m
London Heathrow
Wed 7/10
06:40-23:46
3 stops25h 06m
£910
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Sat 19/12
22:40-06:25
1 stop23h 45m
London Heathrow
Fri 22/1
10:50-18:42
1 stop15h 52m
£923
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Thu 10/9
10:56-18:30
2 stops23h 34m
London Heathrow
Fri 18/9
06:40-23:47
3 stops25h 07m
£947
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Sun 20/9
07:00-17:40
2 stops26h 40m
London Heathrow
Thu 1/10
21:05-17:59
3 stops28h 54m
£999
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Mon 28/9
15:00-18:30
2 stops19h 30m
London Heathrow
Mon 5/10
06:40-23:47
3 stops25h 07m
£1,029
Flights are sorted by cheapest return flights first.
Deals found on 14/8
Showing 1-10 of 22 resultsSorted by cheapest first
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Best time to book a flight from San Diego to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Diego with our price prediction graph.
SAN-LHR
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 San Diego to London Heathrow Airport
Prices
Airlines
How far ahead should I book a flight from San Diego to London Heathrow Airport?
The best time to book flights from San Diego to London Heathrow Airport is 33 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 San Diego to London Heathrow Airport?
Currently, November is the cheapest month in which you can book a flight from San Diego to London Heathrow Airport (average of £567). Flying from San Diego to London Heathrow Airport in June is currently the most expensive (average of £1,108). 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 SAN to LHR?
Find hourly flight availability from San Diego to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 August 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Diego to London Heathrow Airport as you normally would.
How much does it cost for a return flight from San Diego to London Heathrow Airport?
Airfare is typical for this route at the moment.
San Diego to London Heathrow Airport flights typically cost between £662 and £915 in September.The cheapest return price found within the last 5 days was £700 on Delta (13 Sept–6 Oct).
Weekly flight availability from San Diego to London Heathrow Airport
Explore weekly flight availability from San Diego to Heathrow. 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 14 August 2026.
The most flights from SAN to LHR are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated 14 August 2026.
Read through reviews of airlines operating flights from San Diego to London Heathrow Airport, such as British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
Related info for your journey
Find useful and relevant information for your journey from San Diego to Heathrow. 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 from for flights from San Diego to London Heathrow?
San Diego (SAN) is the airport you will fly out of if you book a flight from San Diego to London Heathrow. You should not have trouble finding flights to London Heathrow from San Diego; the airport handles an average of 9 outbound flights to London Heathrow per day. You should also have plenty of airline options to choose from since 1 airline has flights from the San Diego airport to London Heathrow. It is only a 2.6 mi journey to San Diego (SAN) from San Diego’s city center.
How long is the flight from San Diego to London Heathrow Airport?
There are many flights that can get you from San Diego to London Heathrow Airport in 10h 40m. Fly via British Airways, Scandinavian Airlines, or Delta to get the fastest option. Airlines will cover a distance of 5469 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What is the cheapest airline to fly from San Diego to London Heathrow Airport round-trip?
Our cheapest airline available from San Diego to London Heathrow Airport is British Airways. Our recent data shows that you can find tickets from as low as £506 on this airline. This flight start at 31% lower than the current average price 3 months from now.
What are the most reliable airlines from San Diego to London Heathrow Airport?
Consider American Airlines (83%), Alaska Airlines (83%) or Aer Lingus (83%) when booking your flight. These represent the most reliable airlines when flying from San Diego to London Heathrow Airport.
What are the cheapest flights from San Diego to London Heathrow Airport?
While on average a flight from San Diego to London Heathrow Airport is generally £612, our data shows the cheapest flight currently is £244. When looking at the most popular route, (San Diego - London Heathrow), you can expect to pay £529 for that flight.
Can I find deals for business class flights from San Diego to Heathrow?
Yes. Cheapflights offers flight deals from San Diego to Heathrow 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 San Diego to London Heathrow Airport?
Currently, November is the cheapest month in which you can book a flight from San Diego to London Heathrow Airport (average of £567). Flying from San Diego to London Heathrow Airport in June is currently the most expensive (average of £1,108). 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.
Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 14 August 2026.
Discover the top airline that operate flights from San Diego to Heathrow. 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 14 August 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 San Diego to Heathrow?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from San Diego today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from San Diego to Heathrow?
Cheapflights simply makes it quick and affordable to book flights from San Diego to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.
Can Cheapflights find flights from San Diego to Heathrow with no change fees?
Yes, we can. To see specific flights from San Diego to Heathrow with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from San Diego to Heathrow become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from San Diego today and book when prices fit your budget.
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