Cheap flights from San Diego to London Heathrow Airport from £201
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LHR
14 Nov — 21 Nov1
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 February or January, booked 11 days in advance, depart on a Monday or Sunday and return on a Tuesday
Cheap flight deals from San Diego to Heathrow
Enter your travel dates to find the best prices.
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Best
Direct
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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 15 October 2026.
Sat 21/1120:55 -
1 stop16h 00m
Fri 11/1209:20 -
1 stop18h 59m
Deal found 15/10£654
Sat 5/1220:50 -
1 stop16h 05m
Fri 11/1208:05 -
1 stop20h 13m
Deal found 13/10£658
Mon 23/1120:55 -
1 stop16h 45m
Tue 8/1212:45 -
Nonstop11h 25m
Deal found 15/10£659
Wed 4/1121:40 -
1 stop16h 00m
Tue 10/1109:20 -
1 stop17h 38m
Deal found 13/10£661
Mon 23/1120:55 -
1 stop16h 45m
Tue 8/1207:25 -
1 stop20h 53m
Deal found 12/10£662
Tue 17/1111:06 -
2 stops41h 44m
Wed 25/1108:45 -
1 stop15h 00m
Deal found 15/10£662
Tue 1/1206:30 -
3 stops25h 05m
Sun 6/1220:50 -
3 stops29h 21m
Deal found 13/10£663
Thu 3/1221:40 -
1 stop15h 15m
Tue 8/1209:20 -
1 stop18h 59m
Deal found 14/10£664
Wed 11/1121:40 -
1 stop16h 00m
Sun 15/1107:45 -
1 stop34h 50m
Deal found 15/10£665
Sat 7/1121:40 -
1 stop15h 15m
Mon 16/1109:20 -
1 stop17h 38m
Deal found 13/10£666
Thu 12/1115:59 -
2 stops40h 01m
Sun 15/1106:40 -
2 stops24h 52m
Deal found 14/10£668
Mon 9/1121:40 -
1 stop16h 00m
Mon 7/1209:20 -
1 stop18h 59m
Deal found 13/10£669
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 15 October 2026.
Wed 3/212:40 -
1 stop14h 10m
Wed 10/206:35 -
1 stop17h 10m
Deal found 14/10£660
Wed 31/310:00 -
2 stops17h 20m
Tue 6/406:30 -
1 stop13h 15m
Deal found 13/10£667
Tue 26/111:20 -
1 stop14h 40m
Tue 2/212:45 -
Nonstop11h 25m
Deal found 11/10£669
Mon 23/1106:45 -
2 stops16h 55m
Tue 8/1208:45 -
1 stop15h 00m
Deal found 14/10£706
Wed 2/1216:11 -
2 stops18h 19m
Mon 7/1206:40 -
2 stops24h 58m
Deal found 11/10£723
Wed 10/218:00 -
Nonstop10h 40m
Mon 15/216:30 -
1 stop15h 23m
Deal found 11/10£726
Mon 23/1118:00 -
Nonstop10h 40m
Tue 8/1212:45 -
Nonstop11h 25m
Deal found 12/10£727
Mon 23/1111:05 -
3 stops23h 25m
Tue 8/1206:40 -
2 stops24h 16m
Deal found 13/10£735
Fri 12/219:41 -
2 stops26h 14m
Sun 21/209:00 -
2 stops23h 29m
Deal found 14/10£741
Tue 5/109:20 -
3 stops17h 30m
Mon 11/120:35 -
2 stops33h 05m
Deal found 13/10£749
Sat 16/115:59 -
2 stops17h 41m
Sat 23/106:40 -
3 stops24h 15m
Deal found 15/10£747
Thu 21/110:00 -
3 stops24h 30m
Sun 31/106:40 -
2 stops24h 23m
Deal found 15/10£747
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 15 October 2026.
Wed 13/118:00 -
Nonstop10h 40m
Tue 19/112:45 -
Nonstop11h 25m
Deal found 11/10£659
Wed 13/118:00 -
Nonstop10h 40m
Wed 20/112:45 -
Nonstop11h 25m
Deal found 11/10£660
Tue 23/319:00 -
Nonstop10h 40m
Tue 6/414:30 -
Nonstop11h 20m
Deal found 14/10£661
Tue 30/319:40 -
Nonstop10h 40m
Tue 6/414:30 -
Nonstop11h 20m
Deal found 11/10£663
Mon 25/118:00 -
Nonstop10h 40m
Fri 29/112:45 -
Nonstop11h 25m
Deal found 14/10£671
Mon 1/218:00 -
Nonstop10h 40m
Tue 9/212:45 -
Nonstop11h 25m
Deal found 11/10£673
Mon 5/419:40 -
Nonstop10h 40m
Wed 14/411:35 -
Nonstop11h 20m
Deal found 13/10£674
Tue 2/218:00 -
Nonstop10h 40m
Thu 11/212:45 -
Nonstop11h 25m
Deal found 14/10£680
Tue 6/416:45 -
Nonstop10h 45m
Thu 29/414:30 -
Nonstop11h 20m
Deal found 15/10£683
Wed 3/318:00 -
Nonstop10h 40m
Fri 5/312:45 -
Nonstop11h 25m
Deal found 14/10£692
Sun 24/118:00 -
Nonstop10h 40m
Sun 31/112:45 -
Nonstop11h 25m
Deal found 15/10£695
Sun 24/118:00 -
Nonstop10h 40m
Sun 7/212:45 -
Nonstop11h 25m
Deal found 15/10£696
Last-minute flights from San Diego to Heathrow
Discover last-minute flight deals from San Diego to Heathrow. Data last updated 15 October 2026 and is based on user searches.
Wed 4/1121:40 -
1 stop16h 00m
Tue 10/1109:20 -
1 stop17h 38m
Deal found 13/10£661
Sat 7/1121:40 -
1 stop15h 15m
Fri 13/1109:20 -
1 stop17h 38m
Deal found 13/10£666
Sat 7/1121:40 -
1 stop15h 15m
Thu 12/1107:25 -
1 stop20h 57m
Deal found 12/10£672
Mon 9/1121:40 -
1 stop16h 00m
Mon 7/1209:20 -
1 stop18h 59m
Deal found 13/10£669
Tue 10/1111:48 -
1 stop13h 42m
Thu 19/1109:20 -
1 stop18h 16m
Deal found 13/10£673
Wed 11/1121:40 -
1 stop16h 00m
Sun 15/1107:45 -
1 stop34h 50m
Deal found 15/10£665
Thu 12/1115:59 -
2 stops40h 01m
Sun 15/1106:40 -
2 stops24h 52m
Deal found 14/10£668
Tue 17/1111:06 -
2 stops41h 44m
Wed 25/1108:45 -
1 stop15h 00m
Deal found 15/10£662
Sat 21/1120:55 -
1 stop16h 00m
Fri 11/1209:20 -
1 stop18h 59m
Deal found 15/10£654
Mon 23/1120:55 -
1 stop16h 45m
Tue 8/1212:45 -
Nonstop11h 25m
Deal found 15/10£659
Mon 23/1120:55 -
1 stop16h 45m
Tue 8/1207:25 -
1 stop20h 53m
Deal found 12/10£662
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 15 October 2026.
Wed 13/115:09 -
2 stops37h 41m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 11/10£201
Tue 12/115:09 -
2 stops37h 41m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 11/10£202
Wed 3/215:09 -
2 stops37h 41m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 12/10£203
Mon 1/215:09 -
2 stops37h 41m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 12/10£206
Thu 4/215:09 -
2 stops37h 41m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 12/10£207
Sat 5/1217:43 -
2 stops35h 07m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/10£214
Tue 10/1111:06 -
2 stops41h 44m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/10£215
Mon 7/1219:06 -
2 stops33h 44m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/10£217
Mon 9/1121:40 -
1 stop16h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/10£219
Thu 26/1113:02 -
2 stops39h 48m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/10£220
Fri 27/1113:02 -
2 stops39h 48m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/10£223
Thu 26/1120:55 -
1 stop16h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 15/10£226
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 15 October 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 7,457,451 searches. Data last updated 15 October 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
Fri 15/1
21:45-21:40
1 stop15h 55m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£248
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Tue 13/4
21:05-20:45
1 stop15h 40m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£248
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Mon 7/12
21:40-21:40
1 stop16h 00m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£248
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Thu 4/2
21:45-20:55
1 stop15h 10m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£248
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Thu 14/1
21:45-20:55
1 stop15h 10m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£248
Fastest return journey
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Tue 12/1
18:00-12:40
Nonstop10h 40m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£249
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Wed 13/1
18:00-12:40
Nonstop10h 40m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£249
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Sun 10/1
18:00-12:40
Nonstop10h 40m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£249
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Sun 11/4
16:45-11:30
Nonstop10h 45m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£249
San DiegoLondon
SAN San Diego - LHR London Heathrow
SANLHR
San Diego
Mon 5/4
11:20-09:40
1 stop14h 20m
London Heathrow
Wed 31/12
00:00-15:00
Nonstop0h 00m
£252
Flights are sorted by cheapest return flights first.
Deals found on 12/10
Showing 1-10 of 24 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 10 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, February is the cheapest month in which you can book a flight from San Diego to London Heathrow Airport (average of £601). Flying from San Diego to London Heathrow Airport in June is currently the most expensive (average of £1,142). 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 15 October 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 £565 and £842 in January.The cheapest return price found within the last 5 days was £649 on Multiple Airlines (24 Jan–7 Feb).
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 15 October 2026.
The most flights from SAN to LHR are scheduled on a Wednesday (11 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 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 15 October 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 10 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 14h 10m. Fly via United Airlines, Delta, or Finnair 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 £515 on this airline. This flight start at 35% lower than the current average price 3 months from now.
What are the most reliable airlines from San Diego to London Heathrow Airport?
Consider Finnair (91%), Iberia (91%) or Aer Lingus (81%) when booking your flight. These represent the most reliable airlines when flying from San Diego to London Heathrow Airport.
Can I find deals for flights from San Diego to Heathrow that include hotel bookings?
Yes. In addition to deals on San Diego to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from San Diego to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Heathrow.
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, February is the cheapest month in which you can book a flight from San Diego to London Heathrow Airport (average of £601). Flying from San Diego to London Heathrow Airport in June is currently the most expensive (average of £1,142). 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 15 October 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 7,457,451 searches. Data last updated 15 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 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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