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Cheap flights from London to San Diego from £250

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 17/1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SAN
27 Dec — 3 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London to San Diego are usually found in February or March, booked 45 days in advance, depart on a Tuesday or Monday and return on a Monday

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 27 November 2025.

Round-trip from

£529

One-way from

£250

Popular in

July

Cheapest in

February

Average price

£563

Good round-trip deal

£586 or less

Good one-way deal

£619 or less
British Airways
  • British Airways
  • 1/5-13/5
  • Nonstop
  • 22h 05m total
  • London to San Diego
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14/1
  • 14/1
  • 2 total stops
  • 55h 05m total
  • London to San Diego
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Highest demand for flights based on searches. 13% potential increase in price (£70 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Price to beat on a round-trip flight from London (LON) to San Diego.
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Price to beat on a one-way flight from London (LON) to San Diego.
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Find 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 27 November 2025.

Tue 2/1211:55LHR - SAN
1 stop18h 40mBritish Airways
Tue 9/1207:21SAN - LHR
1 stop15h 29mBritish Airways
Deal found 25/11£530
Tue 2/1217:00LHR - SAN
2 stops35h 16mFinnair
Fri 12/1222:45SAN - LHR
1 stop25h 05mFinnair
Deal found 25/11£546
Thu 11/1217:00LHR - SAN
2 stops35h 16mFinnair
Wed 14/113:19SAN - LHR
1 stop14h 21mFinnair
Deal found 24/11£547
Wed 3/1211:55LHR - SAN
1 stop16h 21mIberia
Sun 14/1209:23SAN - LHR
1 stop14h 27mIberia
Deal found 26/11£548
Thu 4/1212:50LHR - SAN
Nonstop11h 20mAmerican Airlines
Thu 11/1210:47SAN - LHR
1 stop15h 13mAmerican Airlines
Deal found 25/11£549
Wed 3/1219:40LHR - SAN
2 stops20h 48mIberia
Thu 11/1210:47SAN - LHR
1 stop15h 13mIberia
Deal found 26/11£551
Tue 9/1212:50LHR - SAN
Nonstop11h 20mAmerican Airlines
Mon 15/1209:23SAN - LHR
1 stop14h 27mAmerican Airlines
Deal found 26/11£552
Wed 10/1209:00LHR - SAN
2 stops34h 53mAir Canada
Wed 24/1218:10SAN - LHR
1 stop33h 40mAir Canada
Deal found 24/11£555
Thu 4/1219:05LHR - SAN
2 stops35h 16mIberia
Mon 15/1206:15SAN - LHR
1 stop18h 00mIberia
Deal found 26/11£558
Tue 2/1211:55LHR - SAN
1 stop18h 40mBritish Airways
Sun 7/1213:22SAN - LHR
1 stop13h 03mBritish Airways
Deal found 25/11£559
Wed 10/1208:45LHR - SAN
1 stop15h 00mMultiple Airlines
Tue 23/1218:10SAN - LHR
1 stop33h 40mMultiple Airlines
Deal found 24/11£560
Thu 11/1207:15LCY - SAN
2 stops22h 29mBritish Airways
Wed 14/109:24SAN - LCY
2 stops20h 41mBritish Airways
Deal found 24/11£578

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 27 November 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

Thu 12/2

10:15-18:50

1 stop16h 35m

San Diego

Thu 19/2

09:25-06:35

1 stop13h 10m

£537

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Fri 13/3

06:35-16:45

1 stop17h 10m

San Diego

Mon 16/3

13:53-10:15

1 stop13h 22m

£542

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 28/1

12:50-16:10

Nonstop11h 20m

San Diego

Sun 1/2

07:10-06:50

1 stop15h 40m

£545

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 15/1

09:30-21:56

2 stops20h 26m

San Diego

Mon 19/1

06:30-07:10

2 stops16h 40m

£547

LondonSan Diego

LCY - SAN

LCYSAN

London City

Thu 15/1

09:15-22:33

2 stops21h 18m

San Diego

Wed 28/1

10:52-12:55

2 stops42h 03m

£548

LondonSan Diego

STN - SAN

STNSAN

London Stansted

Thu 15/1

18:25-15:45

2 stops29h 20m

San Diego

Wed 28/1

17:35-22:10

2 stops20h 35m

£552

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 15/1

12:50-16:10

Nonstop11h 20m

San Diego

Wed 28/1

10:09-13:15

1 stop19h 06m

£554

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 16/4

06:55-15:25

1 stop16h 30m

San Diego

Wed 22/4

06:20-07:25

2 stops17h 05m

£554

LondonSan Diego

LGW - SAN

LGWSAN

London Gatwick

Tue 3/2

18:40-20:49

2 stops34h 09m

San Diego

Wed 25/3

16:00-17:50

2 stops18h 50m

£556

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 18/3

09:30-20:53

2 stops18h 23m

San Diego

Wed 15/4

06:20-06:30

2 stops16h 10m

£557

Flights are sorted by cheapest return flights first.

Deals found on 26/11

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 21 November 2025.

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 £345). Flying from London to San Diego in August is currently the most expensive (average of £420). 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 27 November 2025.

A simple way to save on the total cost of your ticket is to fly from London to San Diego in the evening. If you’re flexible enough to do this you can expect to save up to 16% on your trip compared to booking a flight in the afternoon.

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 37% 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.

Washington, D.C. (IAD) is the most affordable one-stop option, with an average return flight price of £408.

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 17% of weekly flights between London and San Diego have experienced delays in the past year, with the average delay time being 144 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 17% 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 27 November 2025.
Read through reviews of airlines operating flights from London to San Diego, such as Finnair, Virgin Atlantic, andIberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,334 reviews
Check prices

Food

6.7

Boarding

7.6

Comfort

7.4

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Finnair
7.6
Good
1,334 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Food

6.7

Boarding

7.6

Comfort

7.4

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Virgin Atlantic
7.5
Good
675 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Food

6.7

Boarding

7.6

Comfort

7.4

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Iberia
7.0
Good
3,036 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Food

6.7

Boarding

7.6

Comfort

7.4

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Lufthansa
6.8
Okay
7,594 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Food

6.7

Boarding

7.6

Comfort

7.4

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
British Airways
6.7
Okay
7,539 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Food

6.7

Boarding

7.6

Comfort

7.4

Crew

8.1

Entertainment

6.9

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.

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 4 flights from London to San Diego per day from 12 different airlines.

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

    Departing from London to San Diego will take you 16h 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 (£393), Virgin Atlantic (£407), and British Airways (£417) 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?

    £330 is the cheapest one-way deal found within the past few days, from Lufthansa. You may also be able to find cheap deals on SWISS and United Airlines, with prices starting from £344 and £354, 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 (66%), Alaska Airlines (66%) or British Airways (66%) 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 £491. While the most popular route (London Heathrow - San Diego) can be booked for £483 on average, our data indicates £2,091 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 £345). Flying from London to San Diego in August is currently the most expensive (average of £420). 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 27 November 2025.
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 27 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£393Average£499FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AtlanticCheapest£407Average£526FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£417Average£573FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LufthansaCheapest£418Average£502FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air FranceCheapest£423Average£433FlexibilityNo cancel feeOn-time77%
Search Air France flights
FinnairCheapest£427Average£559FlexibilityNo cancel feeOn-time76%
Search Finnair flights
United AirlinesCheapest£427Average£568FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£433Average£567FlexibilityNo cancel feeOn-time75%
Search KLM flights
JetBlueCheapest£462Average£835FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IberiaCheapest£484Average£616FlexibilityNo cancel feeOn-time77%
Search Iberia 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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