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Cheap flights from London to San Diego from £362

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 21/6. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SAN
4 Mar — 11 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to San Diego are usually found in February or January, booked 45 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap flight deals from London to San Diego

Enter your travel dates to find the best prices.

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 2 February 2026.

Mon 23/209:20
LHR
-
SAN
1 stop33h 12m
JetBlue
Wed 4/315:35
SAN
-
LHR
1 stop31h 20m
JetBlue
Deal found 2/2£432
Mon 23/209:20
LHR
-
SAN
1 stop18h 04m
JetBlue
Mon 9/312:49
SAN
-
LHR
1 stop13h 41m
JetBlue
Deal found 1/2£432
Thu 5/307:25
LHR
-
SAN
1 stop20h 35m
JetBlue
Wed 18/321:05
SAN
-
LHR
1 stop17h 35m
JetBlue
Deal found 30/1£433
Thu 19/209:20
LHR
-
SAN
1 stop18h 04m
JetBlue
Sat 7/321:44
SAN
-
LHR
1 stop15h 01m
JetBlue
Deal found 1/2£445
Thu 19/207:25
LHR
-
SAN
1 stop20h 35m
JetBlue
Wed 4/321:10
SAN
-
LHR
1 stop16h 30m
JetBlue
Deal found 31/1£446
Wed 18/207:25
LHR
-
SAN
1 stop20h 35m
JetBlue
Tue 3/321:10
SAN
-
LHR
1 stop16h 30m
JetBlue
Deal found 1/2£454
Tue 17/209:20
LHR
-
SAN
1 stop18h 04m
JetBlue
Tue 3/312:49
SAN
-
LHR
1 stop24h 51m
JetBlue
Deal found 31/1£456
Sun 8/209:20
LHR
-
SAN
1 stop19h 10m
JetBlue
Sun 15/221:10
SAN
-
LHR
1 stop15h 35m
JetBlue
Deal found 1/2£457
Tue 17/207:25
LHR
-
SAN
1 stop20h 35m
JetBlue
Wed 11/312:49
SAN
-
LHR
1 stop13h 41m
JetBlue
Deal found 1/2£462
Thu 19/209:20
LHR
-
SAN
1 stop18h 04m
JetBlue
Sun 8/321:10
SAN
-
LHR
1 stop16h 35m
JetBlue
Deal found 1/2£463
Fri 6/313:00
LGW
-
SAN
1 stop39h 00m
Multiple Airlines
Tue 24/322:02
SAN
-
LGW
1 stop28h 58m
Multiple Airlines
Deal found 1/2£484
Sat 14/320:15
LGW
-
SAN
2 stops46h 32m
Multiple Airlines
Mon 30/322:02
SAN
-
LGW
1 stop27h 58m
Multiple Airlines
Deal found 1/2£491

Find 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 2 February 2026.

Round-trip from

£432

One-way from

£362

Popular in

December

Cheapest in

February

Average price

£477

Good round-trip deal

£510 or less

Good one-way deal

£513 or less
JetBlue
  • JetBlue
  • 23/2-9/3
  • 2 total stops
  • 31h 45m total
  • London to San Diego
Search Deals
21/6
  • 21/6
  • 3 total stops
  • 44h 27m total
  • London to San Diego
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£21 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from London (LON) to San Diego.
Search Deals
Price to beat on a one-way flight from London (LON) to San Diego.
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 2 February 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

Thu 5/3

07:25-20:00

1 stop20h 35m

San Diego

Wed 18/3

10:44-09:30

1 stop15h 46m

£445

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 19/2

07:25-20:00

1 stop20h 35m

San Diego

Sun 8/3

21:10-20:45

1 stop16h 35m

£445

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Fri 20/2

09:20-19:24

1 stop18h 04m

San Diego

Sun 8/3

21:10-20:45

1 stop16h 35m

£485

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 18/2

07:25-20:00

1 stop20h 35m

San Diego

Sun 1/3

21:10-20:45

1 stop15h 35m

£486

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 17/2

09:20-19:24

1 stop18h 04m

San Diego

Sat 28/2

21:10-20:45

1 stop15h 35m

£486

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 3/3

06:00-22:44

2 stops24h 44m

San Diego

Tue 10/3

11:03-13:00

2 stops18h 57m

£516

LondonSan Diego

LGW - SAN

LGWSAN

London Gatwick

Fri 20/3

13:00-12:52

1 stop30h 52m

San Diego

Mon 23/3

22:02-10:00

1 stop28h 58m

£527

LondonSan Diego

LGW - SAN

LGWSAN

London Gatwick

Thu 5/3

14:00-10:30

1 stop28h 30m

San Diego

Wed 18/3

22:02-10:00

1 stop28h 58m

£537

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 19/3

09:00-00:14

2 stops22h 14m

San Diego

Thu 26/3

10:30-10:15

1 stop16h 45m

£545

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 5/3

13:30-00:14

2 stops18h 44m

San Diego

Wed 18/3

22:30-21:20

2 stops15h 50m

£551

Flights are sorted by cheapest return flights first.

Deals found on 31/1

Showing 1-10 of 60 results
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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 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 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 return flight from London to San Diego. Price data was last updated on 30 January 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, December is the cheapest month in which you can book a flight from London to San Diego (average of £324). Flying from London to San Diego in July is currently the most expensive (average of £405). 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 2 February 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to San Diego as you normally would.

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 2 February 2026.

The most flights from LON to SAN are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

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

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

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

Denver (DEN) – chosen by Cheapflights users on 41% of one-stop itineraries from London to San Diego on Cheapflights.

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

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

Montreal (YUL) is the most affordable one-stop option, with an average return flight price of £436.

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

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

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 13h 30m.

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

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

Flights via Amsterdam (AMS) offer the fastest connection on this route, with an average stopover time of 1h 01m.

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

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 2 February 2026.
Read through reviews of airlines operating flights from London to San Diego, such as United Airlines, American Airlines, andIberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,231 reviews
Check prices

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.
United Airlines
7.4
Good
9,231 reviews
United Airlines
7.4
Good
9,231 reviews
Check prices

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.
American Airlines
7.2
Good
11,212 reviews
United Airlines
7.4
Good
9,231 reviews
Check prices

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.
Iberia
7.0
Good
3,101 reviews
United Airlines
7.4
Good
9,231 reviews
Check prices

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.
Lufthansa
6.8
Okay
7,758 reviews
United Airlines
7.4
Good
9,231 reviews
Check prices

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.
British Airways
6.7
Okay
7,711 reviews
United Airlines
7.4
Good
9,231 reviews
Check prices

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Tim,Sept 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?

    If you book a flight to San Diego from London, you will be flying to San Diego, which is the city’s only airport. San Diego (SAN) is located 2.6 mi from the center of San Diego. There are 6 flights from London to San Diego per day from 10 different airlines.

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

    Departing from London to San Diego will take you 20h 35m. London and San Diego are separated by a distance of 5469 mi. This flight may include one or multiple stops.

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

    According to our current data, Air Canada (£379), Lufthansa (£409), and United Airlines (£414) offers the cheapest pricing from London to San Diego. Air Canada is 34% cheaper than the average price of flights available within the next 90 days to this destination.

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

    £303 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on Iberia and British Airways, with prices starting from £375 and £390, respectively.

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

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

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

    Consider American Airlines (71%), Alaska Airlines (71%) or Aer Lingus (71%) when booking your flight. These represent the most reliable airlines when flying from London to San Diego.

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

    Looking at all options, your cheapest flight can be booked for £375. While the most popular route (London Heathrow - San Diego) can be booked for £395 on average, our data indicates £1,924 when flying from London to San Diego.

  • 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 holiday 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, December is the cheapest month in which you can book a flight from London to San Diego (average of £324). Flying from London to San Diego in July is currently the most expensive (average of £405). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
El Cajon

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Fly from London to San Diego on these airlines

Choose from the following airlines for your flight from London to San Diego. Flights are based on user searches made on Cheapflights and were last updated on 2 February 2026.
British Airways flights from London to San Diego
Virgin Atlantic flights from London to San Diego
Finnair flights from London to San Diego

Top 10 airlines flying from London to San Diego

Discover the top 10 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 858,174 searches. Data last updated 2 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£379Average£504FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapest£409Average£475FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£414Average£554FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£423Average£591FlexibilityNo cancel feeOn-time75%
Search KLM flights
FinnairCheapest£435Average£610FlexibilityNo cancel feeOn-time76%
Search Finnair flights
American AirlinesCheapest£438Average£616FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest£443Average£578FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£457Average£509FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
IberiaCheapest£466Average£603FlexibilityNo cancel feeOn-time77%
Search Iberia flights
JetBlueCheapest£474Average£985FlexibilityNo cancel feeOn-time62%
Search JetBlue flights

Fly with Cheapflights

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 London to San Diego?

Cheapflights makes it easy to find London to San Diego flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Diego from London.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to San Diego flexibly with Cheapflights today.

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

Yes! Start tracking prices for London to San Diego flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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