Cheap flights from London to San Diego from $599

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 10/2. 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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Cheap round-trip flights

American Airlines Logo
11:30 am - 2:50 pmLHR-SAN
11h 20mnonstop
American Airlines Logo
4:40 pm - 11:25 amSAN-LHR
10h 45mnonstop
$643American Airlines
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Mon, Oct 6 - Mon, Oct 20
 Logo
11:30 am - 2:50 pmLHR-SAN
11h 20mnonstop
 Logo
4:40 pm - 11:25 amSAN-LHR
10h 45mnonstop
Mon, Oct 6 - Mon, Oct 20
United Airlines Logo
4:25 pm - 3:25 pmLHR-SAN
31h 00m1 stop
United Airlines Logo
12:43 pm - 9:40 amSAN-LHR
12h 57m1 stop
$646United Airlines
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Tue, Oct 21 - Fri, Nov 7
Virgin Atlantic Logo
9:20 am - 7:06 pmLCY-SAN
17h 46m2 stops
Virgin Atlantic Logo
2:00 pm - 5:20 pmSAN-LCY
19h 20m2 stops
$646Virgin Atlantic
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Wed, Sep 24 - Thu, Oct 2
British Airways Logo
2:55 pm - 6:00 pmLHR-SAN
11h 05mnonstop
British Airways Logo
11:30 am - 9:00 amSAN-LHR
13h 30m1 stop
$649British Airways
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Wed, Sep 24 - Fri, Oct 3
British Airways Logo
2:55 pm - 6:00 pmLHR-SAN
11h 05mnonstop
British Airways Logo
3:01 pm - 12:45 pmSAN-LHR
13h 44m1 stop
$654British Airways
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Wed, Sep 24 - Fri, Oct 3
United Airlines Logo
9:30 am - 7:35 pmLHR-SAN
18h 05m1 stop
United Airlines Logo
10:30 pm - 8:40 pmSAN-LHR
14h 10m1 stop
$656United Airlines
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Thu, Sep 25 - Thu, Oct 2
Delta Logo
6:30 am - 3:25 pmLHR-SAN
16h 55m2 stops
Delta Logo
10:30 pm - 6:45 amSAN-LHR
24h 15m1 stop
$671Delta
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Mon, Sep 22 - Sat, Sep 27
Delta Logo
6:30 am - 12:00 pmLHR-SAN
13h 30m1 stop
Delta Logo
6:20 am - 6:45 amSAN-LHR
16h 25m2 stops
$677Delta
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Tue, Oct 14 - Tue, Oct 21
Iberia Logo
8:40 pm - 8:16 pmLGW-SAN
55h 36m2 stops
Iberia Logo
12:18 pm - 7:00 pmSAN-LGW
23h 42m2 stops
$737Iberia
Find Deal
Tue, Sep 30 - Wed, Oct 29

Virgin Atlantic flights from London to San Diego

Our best Virgin Atlantic deals on London to San Diego flight tickets
Virgin Atlantic
Sep 24
LCY9:20 amLondon City
17h 46m
2 stops
SAN7:06 pmSan Diego
Oct 2
SAN2:00 pmSan Diego
19h 20m
2 stops
LCY5:20 pmLondon City
Virgin Atlantic
Oct 7
LCY8:40 amLondon City
18h 28m
2 stops
SAN7:08 pmSan Diego
Oct 14
SAN7:25 amSan Diego
15h 50m
2 stops
LCY7:15 amLondon City
Virgin Atlantic
Oct 7
LCY7:45 amLondon City
19h 23m
2 stops
SAN7:08 pmSan Diego
Oct 14
SAN1:55 pmSan Diego
19h 25m
1 stop
LCY5:20 pmLondon City

British Airways flights from London to San Diego

Our best British Airways deals on London to San Diego flight tickets
British Airways
Sep 24
LHR2:55 pmLondon Heathrow
11h 05m
SAN6:00 pmSan Diego
Oct 3
SAN11:30 amSan Diego
13h 30m
1 stop
LHR9:00 amLondon Heathrow
British Airways
Sep 24
LHR2:55 pmLondon Heathrow
11h 05m
SAN6:00 pmSan Diego
Oct 3
SAN3:01 pmSan Diego
13h 44m
1 stop
LHR12:45 pmLondon Heathrow
British Airways
Oct 9
LHR2:55 pmLondon Heathrow
11h 05m
SAN6:00 pmSan Diego
Oct 16
SAN4:20 pmSan Diego
12h 30m
1 stop
LHR12:50 pmLondon Heathrow

momondo 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, momondo users made 832,500 searches. Data last updated September 3, 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

LHR - SAN

LHRSAN

London Heathrow

Mon 10/6

11:30 am-2:50 pm

Nonstop11h 20m

San Diego

Mon 10/20

4:40 pm-11:25 am

Nonstop10h 45m

$643

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 10/6

11:30 am-2:50 pm

Nonstop11h 20m

San Diego

Mon 10/20

4:40 pm-11:25 am

Nonstop10h 45m

$644

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 10/21

4:25 pm-3:25 pm

1 stop31h 00m

San Diego

Fri 11/7

12:43 pm-9:40 am

1 stop12h 57m

$646

LondonSan Diego

LCY - SAN

LCYSAN

London City

Wed 9/24

9:20 am-7:06 pm

2 stops17h 46m

San Diego

Thu 10/2

2:00 pm-5:20 pm

2 stops19h 20m

$646

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 9/24

2:55 pm-6:00 pm

Nonstop11h 05m

San Diego

Fri 10/3

11:30 am-9:00 am

1 stop13h 30m

$649

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 9/24

2:55 pm-6:00 pm

Nonstop11h 05m

San Diego

Fri 10/3

3:01 pm-12:45 pm

1 stop13h 44m

$654

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 9/25

9:30 am-7:35 pm

1 stop18h 05m

San Diego

Thu 10/2

10:30 pm-8:40 pm

1 stop14h 10m

$656

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 9/22

6:30 am-3:25 pm

2 stops16h 55m

San Diego

Sat 9/27

10:30 pm-6:45 am

1 stop24h 15m

$671

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 10/14

6:30 am-12:00 pm

1 stop13h 30m

San Diego

Tue 10/21

6:20 am-6:45 am

2 stops16h 25m

$677

LondonSan Diego

LGW - SAN

LGWSAN

London Gatwick

Tue 9/30

8:40 pm-8:16 pm

2 stops55h 36m

San Diego

Wed 10/29

12:18 pm-7:00 pm

2 stops23h 42m

$737

Flights are sorted by cheapest round-trip 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 are unable to visit San Diego during the month of February, then departing from London during the month March is also very affordable. Most momondo users find prices during this month for around $662.

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 Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $720. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $942. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

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

The cheapest time of day to fly to San Diego is in the morning when flights can be purchased for as low as $778. Flights at noon are often more expensive with an average ticket price of $803.

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 $765 when searching weeks out. 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 $674 on momondo.

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

There are 3 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 13% 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 September 2025, prices for London to San Diego flights are approximately 12% 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 round-trip 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

$821

Fastest flight time

11h 05m

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 $821. The best round-trip flight deal from London to San Diego found on momondo in the last 72 hours is $750.
The fastest flight from London to San Diego takes 11h 05m
Direct flights go from London to San Diego every day.
There is 1 airport near San Diego: San Diego (SAN)
  • How far is London to San Diego by plane?

    London and San Diego are 5478.3 mi apart from one another. Flights usually cover this in 11h 05m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from London to San Diego Airport are refreshed on a daily basis.

  • 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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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
United AirlinesPriceFrom $533Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
American AirlinesPriceFrom $579Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
British AirwaysPriceFrom $586Free CancellationRating
6.7
7,345 reviews
Search British Airways flights
IberiaPriceFrom $599Free CancellationRating
7.0
2,909 reviews
Search Iberia flights
  • American Airlines Flights From London to San Diego

    American Airlines operates around 13 flights from London to San Diego every week. The average price of these flights found in the last 72 hours has been $790, but momondo users have found American Airlines deals from London to San Diego from as low as $579 round-trip. American Airlines has been scored 7.2/10 in 10,000 reviews.

  • Iberia Flights From London to San Diego

    Another popular option for London to San Diego flights is Iberia (7.0/10, 2,909 ratings). Iberia flies from London to San Diego around 6 times per week, with deals starting from $599 round-trip and rising to an average price of around $780.

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
Chula Vista
El Cajon
Julian
La Mesa
National City
Imperial Beach
Poway
San Ysidro
Borrego Springs
Alpine
Lemon Grove
Santee

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Diego from London.

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

Flights from London to San Diego with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once all potential London to San Diego flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are simply researching potential flights to San Diego, momondo offers a useful price alert feature which will track prices for flights to San Diego from London and alert you when they change.

An easier way to manage your San Diego trip

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1 adult
Mon 9/8
Mon 9/15

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