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Cheap flights from San Diego to London from £378

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 20/8. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LON
19 Jul — 26 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Diego to London are usually found in February or August, booked 51 days in advance, depart on a Tuesday or Monday and return on a Monday

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 19 June 2026.

Sun 23/819:40
SAN
-
LHR
Nonstop10h 40m
Finnair
Sun 20/914:45
LHR
-
SAN
1 stop16h 40m
Finnair
Deal found 18/6£775
Sat 15/813:40
SAN
-
LCY
1 stop22h 05m
Virgin Atlantic
Tue 25/807:45
LCY
-
SAN
2 stops19h 34m
Virgin Atlantic
Deal found 18/6£775
Thu 27/808:15
SAN
-
LHR
2 stops19h 35m
Air Canada
Tue 1/909:30
LHR
-
SAN
2 stops19h 28m
Air Canada
Deal found 19/6£776
Thu 8/1006:40
SAN
-
LGW
2 stops17h 45m
SWISS
Mon 19/1009:25
LGW
-
SAN
2 stops18h 43m
SWISS
Deal found 19/6£777
Thu 13/816:07
SAN
-
LHR
1 stop12h 18m
United Airlines
Wed 26/809:30
LHR
-
SAN
1 stop18h 23m
United Airlines
Deal found 18/6£778
Fri 4/915:30
SAN
-
LGW
3 stops35h 50m
Multiple Airlines
Fri 11/911:35
LGW
-
SAN
1 stop17h 01m
Multiple Airlines
Deal found 18/6£778
Wed 2/919:40
SAN
-
LHR
Nonstop10h 40m
British Airways
Mon 14/911:35
LHR
-
SAN
Nonstop11h 20m
British Airways
Deal found 18/6£780
Tue 22/913:40
SAN
-
LCY
1 stop19h 40m
Virgin Atlantic
Fri 2/1020:15
LCY
-
SAN
1 stop23h 35m
Virgin Atlantic
Deal found 18/6£782
Thu 20/810:55
SAN
-
LHR
2 stops22h 45m
Scandinavian Airlines
Tue 25/810:20
LHR
-
SAN
2 stops16h 59m
Scandinavian Airlines
Deal found 19/6£782
Sat 26/912:54
SAN
-
LHR
1 stop13h 36m
British Airways
Sun 4/1011:35
LHR
-
SAN
Nonstop11h 20m
British Airways
Deal found 16/6£783
Wed 12/813:34
SAN
-
LCY
2 stops19h 46m
Virgin Atlantic
Wed 19/809:20
LCY
-
SAN
2 stops22h 34m
Virgin Atlantic
Deal found 16/6£783
Wed 19/820:40
SAN
-
LGW
1 stop28h 55m
JetBlue
Fri 4/912:20
LGW
-
SAN
1 stop32h 16m
JetBlue
Deal found 19/6£783

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 19 June 2026.

Round-trip from

£775

One-way from

£378

Popular in

June

Cheapest in

February

Average price

£1,041

Good round-trip deal

£810 or less

Good one-way deal

£324 or less
British Airways
  • British Airways
  • 5/11-9/11
  • Nonstop
  • 22h 05m total
  • San Diego to London
Search Deals
20/8
  • 20/8
  • 1 total stop
  • 16h 26m total
  • San Diego to London
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£185 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 19 June 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 - LCY

SANLCY

San Diego

Sat 15/8

15:30-19:45

2 stops20h 15m

London City

Tue 25/8

10:00-23:00

2 stops21h 00m

£778

San DiegoLondon

SAN - LGW

SANLGW

San Diego

Mon 12/10

06:40-08:25

2 stops17h 45m

London Gatwick

Tue 20/10

09:25-22:41

2 stops21h 16m

£787

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Thu 29/10

06:15-08:50

2 stops19h 35m

London City

Mon 2/11

17:50-12:10

1 stop26h 20m

£790

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Mon 12/10

06:40-12:35

2 stops21h 55m

London City

Mon 19/10

19:15-18:40

2 stops31h 25m

£803
Fastest return journey

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sat 22/8

16:45-11:30

Nonstop10h 45m

London Heathrow

Sun 6/9

11:35-14:55

Nonstop11h 20m

£805

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Sat 22/8

13:40-07:15

1 stop33h 35m

London City

Fri 4/9

09:20-11:50

1 stop34h 30m

£805

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Thu 20/8

06:15-07:15

2 stops17h 00m

London City

Sat 29/8

09:20-19:19

2 stops17h 59m

£816

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Sat 12/9

15:20-20:15

2 stops20h 55m

London City

Sat 19/9

08:25-19:16

2 stops18h 51m

£816

San DiegoLondon

SAN - LCY

SANLCY

San Diego

Tue 22/9

13:40-16:40

1 stop19h 00m

London City

Sun 4/10

13:45-23:52

2 stops18h 07m

£828

San DiegoLondon

SAN - LGW

SANLGW

San Diego

Wed 16/9

11:30-14:40

2 stops19h 10m

London Gatwick

Tue 22/9

15:40-22:00

2 stops38h 20m

£830

Flights are sorted by cheapest return flights first.

Deals found on 17/6

Showing 1-10 of 60 resultsSorted by cheapest first
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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, May is the cheapest month in which you can book a flight from San Diego to London (average of £77). Flying from San Diego to London in June is currently the most expensive (average of £551). 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 19 June 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 19 June 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?

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 25% 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 £427.

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 33 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 19 June 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
8,055 reviews
Check prices

Comfort

6.8

Overall

6.7

Boarding

6.9

Entertainment

6.4

Food

6.4

Crew

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.
British Airways
6.7
Okay
8,055 reviews
British Airways
6.7
Okay
8,055 reviews
Check prices

Comfort

6.8

Overall

6.7

Boarding

6.9

Entertainment

6.4

Food

6.4

Crew

7.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Jun 2026

IAH - LHR

Airline was good the flight attendant were very helpful and kind. The problem I had is with cheap tickets, my ticket was not allowed one check in baggage this was new to me. I do a lot of traveling overseas and 1 check in baggage is always allowed. Also I bought insurance for my ticket it proved to be useless. I have called several times and spoke to your customer service, not one single person mentioned it to me that baggage was not allowed. All this additional expense was too much for me. I even asked one of your customer service representative I need to buy extra baggage should I buy it now and he told me when you receive check in information you can buy it @ that time never mentioned it to me that my ticket didn’t include baggage. It was very frustrating. I will never use cheap ticket again.

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?

    Virgin Atlantic, SWISS, and Delta can get you from San Diego to London in just under 17h 45m. Your travel time can differ by up to 15h 50m. There are 5492 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 (£515), offers the cheapest pricing from San Diego to London. British Airways is currently priced 22% 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 Stansted 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 Aer Lingus (85%), Finnair (85%) and Iberia (85%).

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

    On average you can expect to pay £838 for a flight from San Diego to London. The cheapest flight overall is £264 while the most popular route, (San Diego - London Heathrow) is currently priced at £584.

  • 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, May is the cheapest month in which you can book a flight from San Diego to London (average of £77). Flying from San Diego to London in June is currently the most expensive (average of £551). 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

Travelling to a place near London?

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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 19 June 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£515Average£874FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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.

Can Cheapflights notify me if prices for flights from San Diego to London become cheaper?

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