San Diego

$628+ Cheap flights from London (LON) to San Diego (SAN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SAN
Apr 20 — Apr 271
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Find cheap flights from London to San Diego with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from London to San Diego are usually found in March or February, booked 79 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from London to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 April 15, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$628
(lol.travel)

Popular in

July

Cheapest in

March

Average price

$806

Good round-trip deal

$696 or less

Good one-way deal

$762 or less
Provider with most accurate pricing for London (LON)-San Diego flight deals.
Provider most trusted by Cheapflights users for London (LON)-San Diego flights.
From London (LON) to San Diego
Highest demand for flights based on searches. 18% potential increase in price ($172 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from London (LON) to San Diego.
Price to beat on a one-way flight from London (LON) to San Diego.

Find flight deals from London to San Diego

Cheapest flights from London to San Diego
Explore the most affordable flight options available from London to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 15, 2025.

This Flightnetwork deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/262:05 pmLHR - SAN
2 stops29h 43mAir Canada
Sat 5/108:00 amSAN - LHR
1 stop18h 00mAir Canada
Deal found 4/14$628
This Mytrip deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/710:55 amLGW - SAN
2 stops21h 01mMultiple Airlines
Wed 5/146:15 amSAN - LGW
2 stops20h 40mMultiple Airlines
Deal found 4/14$629
This Cheapflightsfares deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/110:30 amLHR - SAN
1 stop15h 42mBritish Airways
Thu 5/84:40 pmSAN - LHR
Nonstop10h 45mBritish Airways
Deal found 4/13$631
This United Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/261:05 pmLHR - SAN
1 stop28h 25mUnited Airlines
Sun 4/2710:00 pmSAN - LHR
1 stop29h 45mUnited Airlines
Deal found 4/13$632
This Delta deal was found by Cheapflights users on 4/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/298:40 amLHR - SAN
2 stops19h 46mDelta
Sat 5/310:01 pmSAN - LHR
1 stop13h 59mDelta
Deal found 4/12$656
This SWISS deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/18:05 pmLHR - SAN
2 stops32h 43mSWISS
Mon 9/1512:45 pmSAN - LHR
2 stops19h 40mSWISS
Deal found 4/14$664
This Global Flight Catchers deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Global Flight Catchers is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/112:30 pmLHR - SAN
1 stop14h 49mIberia
Mon 9/157:50 pmSAN - LHR
Nonstop10h 30mIberia
Deal found 4/14$672
This American Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2511:30 amLHR - SAN
Nonstop11h 20mAmerican Airlines
Thu 5/84:40 pmSAN - LHR
Nonstop10h 45mAmerican Airlines
Deal found 4/13$674
This Finnair deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/229:50 amLHR - SAN
1 stop17h 15mMultiple Airlines
Sat 9/278:40 pmSAN - LHR
1 stop15h 05mMultiple Airlines
Deal found 4/14$675
This SWISS deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/136:35 pmLGW - SAN
2 stops35h 39mSWISS
Tue 5/201:25 pmSAN - LGW
2 stops20h 25mSWISS
Deal found 4/13$677
This Lufthansa deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:35 amLHR - SAN
1 stop16h 50mLufthansa
Mon 1/53:36 pmSAN - LHR
1 stop31h 49mLufthansa
Deal found 4/13$682
This Austrian Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/226:00 amLHR - SAN
2 stops20h 56mAustrian Airlines
Thu 5/88:10 amSAN - LHR
1 stop14h 45mAustrian Airlines
Deal found 4/14$697

Cheapflights Fare Finder

Customize your flight search to find flights from London 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 2,558,603 searches. Data last updated April 15, 2025.
Use the filters below to find and compare flights from London to San Diego that are best for you.

Fly from

London

Fly to

San Diego

Route

Depart

Return

Price

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Sat 4/26

2:05 pm-11:48 am

2 stops29h 43m

San Diego

Sat 5/10

8:00 am-10:00 am

1 stop18h 00m

$628

LondonSan Diego

LGW - SAN

LGWSAN

London Gatwick

Wed 5/7

10:55 am-11:56 pm

2 stops21h 01m

San Diego

Wed 5/14

6:15 am-10:55 am

2 stops20h 40m

$629

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 5/1

10:30 am-6:12 pm

1 stop15h 42m

San Diego

Thu 5/8

4:40 pm-11:25 am

Nonstop10h 45m

$631

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Sat 4/26

1:05 pm-9:30 am

1 stop28h 25m

San Diego

Sun 4/27

10:00 pm-11:45 am

1 stop29h 45m

$632

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 4/29

8:40 am-8:26 pm

2 stops19h 46m

San Diego

Sat 5/3

10:01 pm-8:00 pm

1 stop13h 59m

$656

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 9/1

8:05 pm-8:48 pm

2 stops32h 43m

San Diego

Mon 9/15

12:45 pm-4:25 pm

2 stops19h 40m

$664

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 9/1

12:30 pm-7:19 pm

1 stop14h 49m

San Diego

Mon 9/15

7:50 pm-2:20 pm

Nonstop10h 30m

$672

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Fri 4/25

11:30 am-2:50 pm

Nonstop11h 20m

San Diego

Thu 5/8

1:48 pm-12:30 pm

1 stop14h 42m

$674

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 9/22

9:50 am-7:05 pm

1 stop17h 15m

San Diego

Sat 9/27

8:40 pm-7:45 pm

1 stop15h 05m

$675

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Sat 4/26

8:20 am-6:12 pm

1 stop17h 52m

San Diego

Sat 5/10

7:50 pm-2:20 pm

Nonstop10h 30m

$676

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/13

Showing 1-10 of 57 results
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Compare providers for flights from London to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to San Diego in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London-San Diego flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on London-San Diego flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from London-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London-San Diego flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from London to San Diego

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

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

Use this chart to determine the optimal time to book a round-trip flight from London to San Diego. Price data was last updated on April 11, 2025.

The best time to book flights from London to San Diego is 79 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 to San Diego?

Currently, August is the cheapest month in which you can book a flight from London to San Diego (average of $286). Flying from London to San Diego in March is currently the most expensive (average of $366). 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 LON to SAN?

Find hourly flight availability from London 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 April 15, 2025.

One of the essential ways to save on airfare from London to San Diego is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 7% on airfare.

Weekly flight availability from London to San Diego

Explore weekly flight availability from London 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 April 15, 2025.

The most flights from LON to SAN are scheduled on a Monday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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 April 15, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Air Transat from London to San Diego to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very good
8.0
Very good

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very good

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very good

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very good

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very good

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from London 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?

    San Diego (SAN), located 2.6 mi from the city center, is the airport you fly into when you book flights from London to San Diego. 4 airlines have flights to San Diego from London on a regular basis. Booking flights from London to San Diego should not be difficult; the airport handles an average of 7 inbound flights from London per day.

  • What are the cheapest airlines flying from London to San Diego round-trip?

    Our cheapest airline available from London to San Diego is Air Canada. Our recent data shows that you can find tickets from as low as $628 on this airline. Additional options worth looking into are British Airways and United Airlines, starting at $631 and $632 round-trip. Air Canada is priced at 19% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from London to San Diego one-way?

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $670. However, be on the lookout for offers from Lufthansa and Aer Lingus, as they are both options that can get you from London to San Diego for a low price.

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

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

    No one likes to see their flight delayed. When booking a flight from London to San Diego consider choosing Aer Lingus (80%), Finnair (80%) or Iberia (79%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from London to San Diego is generally $1,377, our data shows the cheapest flight currently is $639. When looking at the most popular route, (London Heathrow - San Diego), you can expect to pay $576 for that flight.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from London to San Diego (average of $286). Flying from London to San Diego in March is currently the most expensive (average of $366). 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 4 airlines flying from London to San Diego

Discover the top 4 airlines that operate flights from London 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 2,558,603 searches. Data last updated April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$523Average$637FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$553Average$739FlexibilityNo cancel feeOn-time70%
IberiaCheapest$576Average$760FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$579Average$748FlexibilityNo cancel feeOn-time71%

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