San Diego

$329+ Cheap flights from London (LON) to San Diego (SAN)

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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SAN
feb. 5 — feb. 121
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Find cheap flights from London to San Diego with Cheapflights

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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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Cheapflights Tip: The best prices from London to San Diego are usually found in January or February, booked 45 days in advance, depart on a Monday 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 enero 6, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$617
(The Travel House)

One-way from

$329
(Trip.com)

Popular in

December

Cheapest in

January

Average price

$650

Good round-trip deal

$886 or less

Good one-way deal

$554 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
One-way flight from London (LON) to San Diego
Highest demand for flights based on searches. 5% potential increase in price ($42 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Average for round-trip flights in January 2026
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 enero 6, 2026.

This lastminute.com deal was found by Cheapflights users on 1/6. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/39:15 amLCY - SAN
2 stops19h 34mSWISS
mar. 2/1012:49 pmSAN - LCY
2 stops20h 16mSWISS
Deal found 1/6$615
This The Travel House deal was found by Cheapflights users on 1/6. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/312:50 pmLHR - SAN
Nonstop11h 20mFinnair
dom. 2/812:32 pmSAN - LHR
1 stop15h 08mFinnair
Deal found 1/6$617
This Delta deal was found by Cheapflights users on 1/6. 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.
lun. 2/22:30 pmLHR - SAN
2 stops16h 17mDelta
mar. 2/105:45 pmSAN - LHR
2 stops18h 25mDelta
Deal found 1/6$620
This American Airlines deal was found by Cheapflights users on 1/6. 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.
lun. 1/198:20 amLHR - SAN
1 stop15h 37mAmerican Airlines
mié. 1/286:00 pmSAN - LHR
Nonstop10h 35mAmerican Airlines
Deal found 1/6$621
This United Airlines deal was found by Cheapflights users on 1/6. 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.
mié. 3/186:35 amLHR - SAN
1 stop17h 10mUnited Airlines
mié. 4/1512:40 pmSAN - LHR
1 stop13h 00mUnited Airlines
Deal found 1/6$622
This The Travel House deal was found by Cheapflights users on 1/5. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 1/2012:50 pmLHR - SAN
Nonstop11h 20mIberia
mié. 2/1812:45 pmSAN - LHR
1 stop14h 55mIberia
Deal found 1/5$623
This Expedia deal was found by Cheapflights users on 1/5. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/1912:50 pmLHR - SAN
Nonstop11h 20mBritish Airways
jue. 2/262:18 pmSAN - LHR
1 stop13h 22mBritish Airways
Deal found 1/5$624
This British Airways deal was found by Cheapflights users on 1/6. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/312:50 pmLHR - SAN
Nonstop11h 20mBritish Airways
dom. 2/86:00 pmSAN - LHR
Nonstop10h 35mBritish Airways
Deal found 1/6$625
This Air Canada deal was found by Cheapflights users on 1/6. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/31:25 pmLHR - SAN
2 stops35h 59mMultiple Airlines
dom. 2/86:15 amSAN - LHR
2 stops16h 15mMultiple Airlines
Deal found 1/6$626
This oojo deal was found by Cheapflights users on 1/6. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/37:40 pmLGW - SAN
2 stops33h 01mIberia
mar. 2/107:10 amSAN - LGW
2 stops19h 40mIberia
Deal found 1/6$627
This The Travel House deal was found by Cheapflights users on 1/6. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/51:25 pmLHR - SAN
2 stops34h 08mAir Canada
jue. 2/125:00 pmSAN - LHR
2 stops30h 10mAir Canada
Deal found 1/6$627
This Air Canada deal was found by Cheapflights users on 1/6. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 1/191:25 pmLHR - SAN
2 stops30h 28mAir Canada
dom. 2/16:05 pmSAN - LHR
2 stops29h 05mAir Canada
Deal found 1/6$628

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 enero 6, 2026.
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

mié. 3/18

6:35 am-4:45 pm

1 stop17h 10m

San Diego

mié. 4/15

11:00 am-9:40 am

1 stop14h 40m

$622

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

jue. 2/12

12:50 pm-4:10 pm

Nonstop11h 20m

San Diego

mar. 3/31

9:00 am-6:20 am

1 stop13h 20m

$625

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

mié. 2/11

12:50 pm-4:10 pm

Nonstop11h 20m

San Diego

vie. 2/27

1:32 pm-11:35 am

1 stop14h 03m

$625

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

lun. 4/13

8:55 am-6:05 pm

1 stop17h 10m

San Diego

jue. 5/14

4:45 pm-11:30 am

Nonstop10h 45m

$641

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

vie. 5/1

11:35 am-2:55 pm

Nonstop11h 20m

San Diego

mié. 5/13

4:45 pm-11:30 am

Nonstop10h 45m

$641

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

sáb. 5/16

7:30 am-10:34 pm

2 stops23h 04m

San Diego

lun. 5/18

5:15 pm-10:40 pm

1 stop21h 25m

$644

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

jue. 4/30

6:55 am-10:16 pm

2 stops23h 21m

San Diego

dom. 5/31

9:55 pm-6:55 am

1 stop25h 00m

$644

LondonSan Diego

LCY - SAN

LCYSAN

London City

lun. 3/16

7:45 am-8:48 pm

2 stops20h 03m

San Diego

lun. 3/30

2:47 pm-4:40 pm

2 stops17h 53m

$649

LondonSan Diego

LCY - SAN

LCYSAN

London City

lun. 2/9

10:00 am-8:37 pm

2 stops18h 37m

San Diego

lun. 2/23

6:25 am-8:10 am

2 stops17h 45m

$649

LondonSan Diego

LCY - SAN

LCYSAN

London City

mié. 2/4

10:00 am-9:05 pm

2 stops19h 05m

San Diego

mié. 2/11

6:15 am-8:10 am

2 stops17h 55m

$649

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

Showing 1-10 of 60 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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy2 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London-San Diego flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 January 2, 2026.

The best time to book flights from London to San Diego is 45 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, February is the cheapest month in which you can book a flight from London to San Diego (average of $441). Flying from London to San Diego in August is currently the most expensive (average of $555). 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 enero 6, 2026.

When flying from London to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 enero 6, 2026.

The most flights from LON to SAN are scheduled on a Friday (11 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from London to San Diego?

How often are flights from London to San Diego delayed?

About 16% of weekly flights between London and San Diego have experienced delays in the past year, with the average delay time being 146 minutes.

What is the most punctual flight time for London to San Diego flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to San Diego flights?

Over the last year, British Airways have had the lowest number of delays on this route, with just 16% of flights being delayed.

The best insider tips for London to San Diego flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your London to San Diego trip
Airports
LHR

Heathrow's strict security means long waits. Ensure all liquids are in a small bag to avoid delays during manual screening.

SAN

For a quick city transfer, use the free San Diego Flyer shuttle to reach downtown from SAN.

Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

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 enero 6, 2026.
Read reviews from past customers who have flown United Airlines, American Airlines, and Iberia from London to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Tim,Sep 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Tim,Sep 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Tim,Sep 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Tim,Sep 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Tim,Sep 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

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 6 inbound flights from London per day.

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

    For as low as $625, United Airlines can have you in San Diego from London in 11h 20m. The distance between London and San Diego is about 5469 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Our cheapest airline available from London to San Diego is United Airlines. Our recent data shows that you can find tickets from as low as $533 on this airline. Additional options worth looking into are British Airways and Iberia, starting at $589 and $599 round-trip. United Airlines is priced at 32% 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 American Airlines, with whom users have recently found tickets for as low as $545. However, be on the lookout for offers from British Airways and Lufthansa, 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 American Airlines (80%), Alaska Airlines (80%) or Aer Lingus (80%) 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 $818, our data shows the cheapest flight currently is $432. When looking at the most popular route, (London Heathrow - San Diego), you can expect to pay $483 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, February is the cheapest month in which you can book a flight from London to San Diego (average of $441). Flying from London to San Diego in August is currently the most expensive (average of $555). 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

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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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 enero 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$533Average$715FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$589Average$834FlexibilityNo cancel feeOn-time70%
IberiaCheapest$599Average$817FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$664Average$851FlexibilityNo cancel feeOn-time71%

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