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Cheap flights from London to San Diego from £253

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to San Diego departing on 14/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London to San Diego

Cheap return flights

Logo
10:55 - 23:24LGW-SAN
20h 29m2 stops
Logo
06:15 - 10:55SAN-LGW
20h 40m2 stops
£419
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Wed, 10 Sep - Wed, 17 Sep
Logo
10:55 - 23:24LGW-SAN
20h 29m2 stops
Logo
06:15 - 10:55SAN-LGW
20h 40m2 stops
£428
Find Deal
Wed, 10 Sep - Wed, 17 Sep
United Airlines Logo
10:50 - 15:25LHR-SAN
36h 35m1 stop
United Airlines Logo
13:58 - 07:25SAN-LHR
33h 27m1 stop
£429United Airlines
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Thu, 11 Sep - Sat, 13 Sep
Lufthansa Logo
06:55 - 15:25LHR-SAN
16h 30m1 stop
Lufthansa Logo
17:15 - 15:40SAN-LHR
14h 25m1 stop
£430Lufthansa
Find Deal
Mon, 1 Sep - Mon, 15 Sep
Lufthansa Logo
06:55 - 15:25LHR-SAN
16h 30m1 stop
Lufthansa Logo
17:15 - 22:40SAN-LHR
21h 25m1 stop
£433Lufthansa
Find Deal
Wed, 24 Sep - Mon, 29 Sep
United Airlines Logo
07:25 - 15:25LHR-SAN
16h 00m1 stop
United Airlines Logo
10:15 - 07:40SAN-LHR
13h 25m1 stop
£444United Airlines
Find Deal
Mon, 1 Sep - Mon, 15 Sep
Virgin Atlantic Logo
10:00 - 21:15LCY-SAN
19h 15m2 stops
Virgin Atlantic Logo
11:23 - 16:40SAN-LCY
21h 17m2 stops
£559Virgin Atlantic
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Mon, 1 Sep - Mon, 15 Sep
Virgin Atlantic Logo
20:10 - 12:00LCY-SAN
23h 50m1 stop
Virgin Atlantic Logo
13:55 - 07:15SAN-LCY
33h 20m1 stop
£569Virgin Atlantic
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Mon, 22 Sep - Tue, 30 Sep
British Airways Logo
20:25 - 18:42LCY-SAN
30h 17m2 stops
British Airways Logo
08:18 - 11:55SAN-LCY
19h 37m2 stops
£582British Airways
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Tue, 23 Sep - Tue, 30 Sep
British Airways Logo
16:05 - 20:20LCY-SAN
36h 15m2 stops
British Airways Logo
18:48 - 16:30SAN-LCY
37h 42m2 stops
£584British Airways
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Fri, 3 Oct - Sun, 12 Oct

SWISS flights from London to San Diego

Our best SWISS deals on London to San Diego flight tickets
SWISS
30 Aug
LGW18:40London Gatwick
34h 08m
2 stops
SAN20:48San Diego
6 Oct
SAN13:59San Diego
19h 51m
2 stops
LGW17:50London Gatwick
£463
Find similar
SWISS
1 Sept
LHR17:10London Heathrow
35h 38m
2 stops
SAN20:48San Diego
15 Sept
SAN13:58San Diego
19h 52m
2 stops
LHR17:50London Heathrow
£464
Find similar
SWISS
1 Sept
LHR20:05London Heathrow
32h 43m
2 stops
SAN20:48San Diego
15 Sept
SAN13:58San Diego
19h 52m
2 stops
LHR17:50London Heathrow
£465
Find similar

British Airways flights from London to San Diego

Our best British Airways deals on London to San Diego flight tickets
British Airways
23 Sept
LCY20:25London City
30h 17m
2 stops
SAN18:42San Diego
30 Sept
SAN08:18San Diego
19h 37m
2 stops
LCY11:55London City
£582
Find similar
British Airways
3 Oct
LCY16:05London City
36h 15m
2 stops
SAN20:20San Diego
12 Oct
SAN18:48San Diego
37h 42m
2 stops
LCY16:30London City
£584
Find similar
British Airways
6 Aug
LHR15:40London Heathrow
25h 15m
1 stop
SAN08:55San Diego
20 Aug
SAN19:50San Diego
10h 30m
LHR14:20London Heathrow
£638
Find similar

momondo 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, momondo users made 279,928 searches. Data last updated 30 July 2025.
Use the filters below to find and compare flights from London to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Diego

LGW - SAN

LGWSAN

London Gatwick

Wed 10/9

10:55-23:24

2 stops20h 29m

San Diego

Wed 17/9

06:15-10:55

2 stops20h 40m

£419

LondonSan Diego

LGW - SAN

LGWSAN

London Gatwick

Wed 10/9

10:55-23:24

2 stops20h 29m

San Diego

Wed 17/9

06:15-10:55

2 stops20h 40m

£428

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 11/9

10:50-15:25

1 stop36h 35m

San Diego

Sat 13/9

13:58-07:25

1 stop33h 27m

£429

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 1/9

06:55-15:25

1 stop16h 30m

San Diego

Mon 15/9

17:15-15:40

1 stop14h 25m

£430

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 24/9

06:55-15:25

1 stop16h 30m

San Diego

Mon 29/9

17:15-22:40

1 stop21h 25m

£433

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 1/9

07:25-15:25

1 stop16h 00m

San Diego

Mon 15/9

10:15-07:40

1 stop13h 25m

£444

LondonSan Diego

LCY - SAN

LCYSAN

London City

Mon 1/9

10:00-21:15

2 stops19h 15m

San Diego

Mon 15/9

11:23-16:40

2 stops21h 17m

£559

LondonSan Diego

LCY - SAN

LCYSAN

London City

Mon 22/9

20:10-12:00

1 stop23h 50m

San Diego

Tue 30/9

13:55-07:15

1 stop33h 20m

£569

LondonSan Diego

LCY - SAN

LCYSAN

London City

Tue 23/9

20:25-18:42

2 stops30h 17m

San Diego

Tue 30/9

08:18-11:55

2 stops19h 37m

£582

LondonSan Diego

LCY - SAN

LCYSAN

London City

Fri 3/10

16:05-20:20

2 stops36h 15m

San Diego

Sun 12/10

18:48-16:30

2 stops37h 42m

£584

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Diego from

How to get the cheapest flight ticket from London to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Diego?

If you don’t want to visit San Diego in February, then you should wait until March to fly from London, when ticket prices are also cheap, with an average price of £489.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from London to San Diego is on a Friday when prices can be found for as low as £556. Flights from London to San Diego on a Sunday will generally be more expensive and average around £620. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to San Diego?

In the morning is the cheapest time of day to fly from London to San Diego when you can find flight prices for as low as £553. Flying to San Diego in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around £621. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London to San Diego flight route?

Fly from London Heathrow to San Diego for the best London - San Diego flight prices

How far in advance should I book a flight to San Diego?

You are more likely to see cheaper flights to San Diego from London when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around £571 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from London for as low as £501 on momondo.

What cabin class options are available on London to San Diego flights?

There are 4 cabin classes available to choose from on London to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to San Diego flights?

You could potentially save up to 23% on your flight if you consider stops on a London to San Diego flight.

How have London to San Diego flight prices changed over time?

As of July 2025, prices for London to San Diego flights are approximately 3% cheaper when compared to flights at the same time last year.

When to book flights from London to San Diego

Are you open to changing your travel dates? Check out the ideal times to fly from London to San Diego according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London to San Diego (LON to SAN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to San Diego

Best price found

£253

Fastest flight time

16h 00m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from London in the past 72 hours is £253. The best return flight deal from London to San Diego found on momondo in the last 72 hours is £419.
The fastest flight from London to San Diego takes 16h 00m
Direct flights go from London to San Diego every day.
There is 1 airport near San Diego: San Diego (SAN)
Search flight deals

  • How far is London to San Diego by plane?

    The straight-line distance from London to San Diego is 5478.3 mi. In terms of flight time, this usually takes a little over 16h 00m.

  • When did momondo last update prices for flights from London to San Diego Airport?

    Prices for flights from London to San Diego Airport are updated daily.

  • How many operators does momondo search for flights from London to San Diego Airport?

  • How old do you have to be to fly from London to San Diego Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London to San Diego?

  • What is the most popular airline from London to San Diego?

Best airlines flying from London to San Diego

Compare and see reviews for airlines that fly from London to San Diego with momondo
Airline
Rating
Free Cancellation
Price
Air FrancePriceFrom £374Free CancellationRating
7.5
1,465 reviews
Search Air France flights
Air CanadaPriceFrom £389Free CancellationRating
7.1
9,826 reviews
Search Air Canada flights
Virgin AtlanticPriceFrom £403Free CancellationRating
7.4
655 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £404Free CancellationRating
6.6
7,208 reviews
Search British Airways flights
LufthansaPriceFrom £409Free CancellationRating
6.8
7,265 reviews
Search Lufthansa flights
United AirlinesPriceFrom £417Free CancellationRating
7.4
8,896 reviews
Search United Airlines flights
KLMPriceFrom £427Free CancellationRating
7.8
1,383 reviews
Search KLM flights
FinnairPriceFrom £434Free CancellationRating
7.6
1,316 reviews
Search Finnair flights
American AirlinesPriceFrom £442Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
IberiaPriceFrom £485Free CancellationRating
7.0
2,859 reviews
Search Iberia flights

  • Finnair Flights From London to San Diego

    Across 6 Finnair flights from London to San Diego this week, the average price was £751, with the best Finnair deals starting from £579 round-trip. 1,316 users have rated Finnair on momondo, with an average score of 7.6/10.

  • American Airlines Flights From London to San Diego

    The best American Airlines deal for London to San Diego flight tickets found on momondo in the last 72 hours was £590, round-trip. It should be noted that an average American Airlines flight deal for this route in this time was higher, at £895 round-trip. American Airlines operates 13 flights out of London into San Diego in an average week, so prices vary by time and availability. 10,000 American Airlines reviews by users on momondo have scored the airline at 7.2/10.

Travelling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista

Why use momondo?

Why should I use momondo to find a flight deal from London to San Diego?

Finding the right flight to San Diego from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Diego quick and easy, saving you time and money.

Can I find flights from London to San Diego with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to San Diego from London with this policy.

How can momondo help me find flights from London to San Diego?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to San Diego.

I’m not ready to book a flight from London to San Diego right now. Can momondo alert me if prices change?

Price alerts on flights to San Diego from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your San Diego trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
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