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Cheap flights from San Diego to London from £247

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 26/10. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LON
29 Aug — 5 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Diego to London are usually found in February or April, booked 51 days in advance, depart on a Sunday or Monday and return on a Tuesday

Cheap flight deals from San Diego to London

Enter your travel dates to find the best prices.

Cheapest flights from San Diego to London
Explore the most affordable flight options available from San Diego to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 July 2026.

Wed 30/909:46
SAN
-
LHR
2 stops16h 34m
Delta
Wed 7/1008:40
LHR
-
SAN
2 stops18h 34m
Delta
Deal found 26/7£718
Fri 11/915:30
SAN
-
LGW
3 stops32h 25m
Multiple Airlines
Fri 18/911:35
LGW
-
SAN
3 stops34h 35m
Multiple Airlines
Deal found 24/7£718
Wed 9/911:15
SAN
-
LHR
1 stop13h 50m
British Airways
Wed 16/911:35
LHR
-
SAN
Nonstop11h 20m
British Airways
Deal found 26/7£719
Wed 9/915:30
SAN
-
LGW
2 stops35h 15m
Multiple Airlines
Wed 16/912:40
LGW
-
SAN
2 stops33h 30m
Multiple Airlines
Deal found 26/7£719
Wed 2/907:30
SAN
-
LHR
1 stop14h 50m
Multiple Airlines
Mon 7/919:45
LHR
-
SAN
2 stops27h 16m
Multiple Airlines
Deal found 25/7£720
Wed 16/915:30
SAN
-
LGW
2 stops35h 15m
Multiple Airlines
Mon 21/912:40
LGW
-
SAN
2 stops33h 30m
Multiple Airlines
Deal found 24/7£720
Thu 8/1015:30
SAN
-
LHR
1 stop36h 35m
WestJet
Sat 17/1014:10
LHR
-
SAN
1 stop32h 00m
WestJet
Deal found 27/7£720
Wed 7/1012:35
SAN
-
LHR
1 stop16h 45m
Air Canada
Thu 15/1017:40
LHR
-
SAN
2 stops33h 00m
Air Canada
Deal found 29/7£721
Tue 8/906:42
SAN
-
LGW
2 stops17h 43m
SWISS
Tue 15/909:25
LGW
-
SAN
2 stops20h 45m
SWISS
Deal found 25/7£721
Wed 9/914:15
SAN
-
LHR
2 stops18h 25m
Lufthansa
Wed 16/906:30
LHR
-
SAN
2 stops18h 56m
Lufthansa
Deal found 27/7£722
Thu 10/915:30
SAN
-
LGW
3 stops34h 20m
Multiple Airlines
Fri 25/911:35
LGW
-
SAN
3 stops34h 35m
Multiple Airlines
Deal found 25/7£722
Wed 2/909:05
SAN
-
LHR
1 stop13h 45m
American Airlines
Wed 16/911:35
LHR
-
SAN
Nonstop11h 20m
American Airlines
Deal found 28/7£723

Find flight deals from San Diego to London

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to London (LON). 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 30 July 2026.

Round-trip from

£718

One-way from

£247

Popular in

June

Cheapest in

February

Average price

£939

Good round-trip deal

£694 or less

Good one-way deal

£473 or less
Delta
  • Delta
  • 30/9-7/10
  • 4 total stops
  • 35h 08m total
  • San Diego to London
Search Deals
JetBlue
  • JetBlue
  • 26/10
  • 1 total stop
  • 16h 15m total
  • San Diego to London
Search Deals
Highest demand for flights based on searches. 26% potential increase in price (£185 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from San Diego to London (LON).
Search Deals
Price to beat on a one-way flight from San Diego to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Diego to London 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 30 July 2026.
Use the filters below to find and compare flights from San Diego to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 30/9

09:46-10:20

2 stops16h 34m

London Heathrow

Wed 7/10

08:40-19:14

2 stops18h 34m

£718

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 24/8

06:18-07:55

2 stops17h 37m

London Heathrow

Mon 31/8

20:05-18:30

2 stops30h 25m

£721

San DiegoLondon

SAN - LGW

SANLGW

San Diego

Mon 24/8

06:18-08:25

2 stops18h 07m

London Gatwick

Tue 8/9

09:25-22:10

2 stops20h 45m

£721

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Mon 11/1

09:45-16:35

2 stops22h 50m

London City

Sat 23/1

10:00-16:06

2 stops38h 06m

£723
Fastest return journey

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 24/8

19:40-14:20

Nonstop10h 40m

London Heathrow

Thu 10/9

11:35-14:55

Nonstop11h 20m

£726

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Wed 30/9

13:38-17:20

2 stops19h 42m

London City

Mon 5/10

17:50-11:50

1 stop26h 00m

£728

San DiegoLondon

SAN - LGW

SANLGW

San Diego

Sat 17/10

07:00-06:20

1 stop15h 20m

London Gatwick

Thu 29/10

11:00-09:40

1 stop29h 40m

£728

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Wed 9/9

06:15-07:55

2 stops17h 40m

London City

Wed 16/9

17:10-11:50

1 stop26h 40m

£728

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Mon 24/8

06:29-07:15

2 stops16h 46m

London City

Tue 8/9

09:20-20:37

2 stops19h 17m

£735

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Wed 14/10

07:47-09:30

2 stops17h 43m

London City

Tue 20/10

09:20-20:14

2 stops18h 54m

£735

Flights are sorted by cheapest return flights first.

Deals found on 27/7

Showing 1-10 of 60 resultsSorted by cheapest first
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6

Best time to book a flight from San Diego to London

Have a flexible travel schedule? Discover the best time to fly to London from San Diego with our price prediction graph.
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

What is the cheapest month to book a flight from San Diego to London?

Currently, February is the cheapest month in which you can book a flight from San Diego to London (average of £568). Flying from San Diego to London in June is currently the most expensive (average of £1,098). 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 LON?

Find hourly flight availability from San Diego to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 July 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 as you normally would.

Weekly flight availability from San Diego to London

Explore weekly flight availability from San Diego to London. 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 30 July 2026.

The most flights from SAN to LON 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).

How much does it cost for a return flight from San Diego to London?

Airfare is typical for this route at the moment.
San Diego to London flights typically cost between £616 and £825 in September.
The cheapest return price found within the last 5 days was £718 on Delta (30 Sept–7 Oct).

What’s the top stopover airport for flights from San Diego to London?

Share of one-stop return flights from San Diego to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Boston (BOS) – chosen by Cheapflights users on 33% of one-stop itineraries from San Diego to London on Cheapflights.

What’s the cheapest stopover airport for flights from San Diego to London?

Average return fare for one-stop flights from San Diego to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Denver (DEN) is the most affordable one-stop option, with an average return flight price of £425.

What’s the fastest stopover option from San Diego to London?

Shortest average travel time for one-stop one-way flights from San Diego to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Denver (DEN) have the shortest average one-way travel time for one-stop routes: 12h 17m.

Which airport typically offers the quickest stopover for flights from San Diego to London?

Average stopover duration for one-stop one-way flights from San Diego to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Denver (DEN) offer the fastest connection on this route, with an average stopover time of 1h 08m.

How far ahead should I book a flight from San Diego to London?

The price you pay for your flight from San Diego to London may vary depending on when you book. For the best chance of a lower fare, look to book 50 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated 30 July 2026.
Get a feel of what it's like to fly with British Airways from San Diego to London by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
8,129 reviews
Check prices

Crew

7.7

Food

6.4

Comfort

6.8

Overall

6.7

Boarding

7.0

Entertainment

6.5

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

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.
British Airways
6.7
Okay
8,129 reviews
British Airways
6.7
Okay
8,129 reviews
Check prices

Crew

7.7

Food

6.4

Comfort

6.8

Overall

6.7

Boarding

7.0

Entertainment

6.5

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

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 London. 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?

    San Diego (SAN), located 2.6 mi from the city center, is the airport you fly out of when you book flights from San Diego to London. 1 airline have flights from San Diego to London on a regular basis. Booking flights from San Diego to London should not be difficult; the airport handles an average of 9 outbound flights to London per day.

  • How long is the flight from San Diego to London?

    Delta, SWISS, and British Airways can get you from San Diego to London in just under 10h 40m. Your travel time can differ by up to 6h 57m. There are 5469 mi between San Diego and London. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from San Diego to London round-trip?

    According to our current data, British Airways (£513), offers the cheapest pricing from San Diego to London. British Airways is currently priced 26% below the average price you’ll pay for this route.

  • What are the most popular routes from San Diego to London?

    When deciding which route to take from San Diego to London consider San Diego - London Heathrow, San Diego - London Gatwick or San Diego - London City as they are the most popular.

  • What are the most reliable airlines from San Diego to London?

    The top 3 most reliable airlines when flying from San Diego to London are American Airlines (86%), Alaska Airlines (86%) and British Airways (86%).

  • What are the cheapest flights from San Diego to London?

    On average you can expect to pay £722 for a flight from San Diego to London. The cheapest flight overall is £247 while the most popular route, (San Diego - London Heathrow) is currently priced at £515.

  • Can I find deals for flights from San Diego to London that include hotel bookings?

    Yes. In addition to deals on San Diego to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Diego to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to London.

  • Can I find deals for business class flights from San Diego to London?

    Yes. Cheapflights offers flight deals from San Diego to London 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?

    Currently, February is the cheapest month in which you can book a flight from San Diego to London (average of £568). Flying from San Diego to London in June is currently the most expensive (average of £1,098). 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.

See more FAQs

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Top airline flying from San Diego to London

Discover the top airline that operate flights from San Diego to London. 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 30 July 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£513Average£956FlexibilityNo cancel feeOn-time70%
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Fly with Cheapflights

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How does Cheapflights help users find flights from San Diego to London?

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Why should you use Cheapflights to find cheap flight tickets from San Diego to London?

Millions of users choose and trust Cheapflights to book the best flight deals from San Diego to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from San Diego to London with no change fees?

Yes, we can. To see specific flights from San Diego to London with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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