Cheap flights from London to San Diego from $582

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 10/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from London to San Diego

Cheap round-trip flights

Air Canada Logo
6:00 pm - 5:24 pmLHR-SAN
30h 24m2 stops
Air Canada Logo
6:10 pm - 7:10 amSAN-LHR
29h 00m2 stops
$632Air Canada
Find Deal
Tue, Oct 28 - Tue, Nov 4
Air Canada Logo
8:30 am - 7:35 pmLHR-SAN
19h 05m2 stops
Air Canada Logo
8:10 am - 11:50 amSAN-LHR
19h 40m2 stops
$634Air Canada
Find Deal
Thu, Oct 2 - Sun, Oct 5
Delta Logo
6:20 am - 4:19 pmLHR-SAN
17h 59m2 stops
Delta Logo
3:32 pm - 12:50 pmSAN-LHR
13h 18m1 stop
$638Delta
Find Deal
Mon, Nov 3 - Mon, Nov 17
British Airways Logo
12:50 pm - 5:10 pmLHR-SAN
11h 20mnonstop
British Airways Logo
2:39 pm - 11:40 amSAN-LHR
13h 01m1 stop
$641British Airways
Find Deal
Thu, Oct 30 - Thu, Nov 6
British Airways Logo
8:20 am - 3:53 pmLHR-SAN
15h 33m1 stop
British Airways Logo
7:50 pm - 2:20 pmSAN-LHR
10h 30mnonstop
$643British Airways
Find Deal
Sat, Sep 27 - Wed, Oct 22
American Airlines Logo
12:50 pm - 4:10 pmLHR-SAN
11h 20mnonstop
American Airlines Logo
6:00 pm - 12:35 pmSAN-LHR
10h 35mnonstop
$645American Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 17
American Airlines Logo
12:50 pm - 4:10 pmLHR-SAN
11h 20mnonstop
American Airlines Logo
2:55 pm - 12:15 pmSAN-LHR
13h 20m1 stop
$646American Airlines
Find Deal
Mon, Nov 3 - Mon, Nov 17
United Airlines Logo
8:30 am - 8:16 pmLHR-SAN
19h 46m2 stops
United Airlines Logo
6:15 am - 7:40 amSAN-LHR
17h 25m1 stop
$650United Airlines
Find Deal
Wed, Oct 15 - Sun, Oct 19
United Airlines Logo
6:30 am - 3:51 pmLHR-SAN
17h 21m2 stops
United Airlines Logo
11:02 am - 12:00 pmSAN-LHR
16h 58m2 stops
$656United Airlines
Find Deal
Wed, Oct 15 - Sat, Dec 13
Delta Logo
8:40 am - 8:34 pmLCY-SAN
19h 54m2 stops
Delta Logo
1:41 pm - 8:50 amSAN-LCY
59h 09m2 stops
$678Delta
Find Deal
Wed, Nov 5 - Sun, Nov 9

British Airways flights from London to San Diego

Our best British Airways deals on London to San Diego flight tickets
British Airways
Oct 30
LHR12:50 pmLondon Heathrow
11h 20m
SAN5:10 pmSan Diego
Nov 6
SAN2:39 pmSan Diego
13h 01m
1 stop
LHR11:40 amLondon Heathrow
British Airways
Sep 27
LHR8:20 amLondon Heathrow
15h 33m
1 stop
SAN3:53 pmSan Diego
Oct 22
SAN7:50 pmSan Diego
10h 30m
LHR2:20 pmLondon Heathrow
British Airways
Sep 27
LHR8:20 amLondon Heathrow
15h 33m
1 stop
SAN3:53 pmSan Diego
Oct 22
SAN4:40 pmSan Diego
10h 45m
LHR11:25 amLondon Heathrow

Air Canada flights from London to San Diego

Our best Air Canada deals on London to San Diego flight tickets
Air Canada
Sep 22
LHR3:50 pmLondon Heathrow
29h 30m
2 stops
SAN1:20 pmSan Diego
Oct 6
SAN8:10 amSan Diego
17h 25m
1 stop
LHR9:35 amLondon Heathrow
Air Canada
Oct 28
LHR6:00 pmLondon Heathrow
30h 24m
2 stops
SAN5:24 pmSan Diego
Nov 4
SAN6:10 pmSan Diego
29h 00m
2 stops
LHR7:10 amLondon Heathrow
Air Canada
Oct 2
LHR8:30 amLondon Heathrow
19h 05m
2 stops
SAN7:35 pmSan Diego
Oct 5
SAN8:10 amSan Diego
19h 40m
2 stops
LHR11:50 amLondon 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 15, 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

Tue 10/28

6:00 pm-5:24 pm

2 stops30h 24m

San Diego

Tue 11/4

6:10 pm-7:10 am

2 stops29h 00m

$632

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 10/2

8:30 am-7:35 pm

2 stops19h 05m

San Diego

Sun 10/5

8:10 am-11:50 am

2 stops19h 40m

$634

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 11/3

6:20 am-4:19 pm

2 stops17h 59m

San Diego

Mon 11/17

3:32 pm-12:50 pm

1 stop13h 18m

$638

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 10/30

12:50 pm-5:10 pm

Nonstop11h 20m

San Diego

Thu 11/6

2:39 pm-11:40 am

1 stop13h 01m

$641

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Sat 9/27

8:20 am-3:53 pm

1 stop15h 33m

San Diego

Wed 10/22

7:50 pm-2:20 pm

Nonstop10h 30m

$643

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 11/3

12:50 pm-4:10 pm

Nonstop11h 20m

San Diego

Mon 11/17

6:00 pm-12:35 pm

Nonstop10h 35m

$645

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 11/3

12:50 pm-4:10 pm

Nonstop11h 20m

San Diego

Mon 11/17

2:55 pm-12:15 pm

1 stop13h 20m

$646

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 10/15

8:30 am-8:16 pm

2 stops19h 46m

San Diego

Sun 10/19

6:15 am-7:40 am

1 stop17h 25m

$650

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 10/15

6:30 am-3:51 pm

2 stops17h 21m

San Diego

Sat 12/13

11:02 am-12:00 pm

2 stops16h 58m

$656

LondonSan Diego

LCY - SAN

LCYSAN

London City

Wed 11/5

8:40 am-8:34 pm

2 stops19h 54m

San Diego

Sun 11/9

1:41 pm-8:50 am

2 stops59h 09m

$678

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 typical price of a round-trip flight between London and San Diego?

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 $663.

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 $955. 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 afternoon when flights can be purchased for as low as $777. 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 $764 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 $673 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 20% 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 14% 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 $767.
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 20m, 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
8,929 reviews
Search United Airlines flights
British AirwaysPriceFrom $589Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
IberiaPriceFrom $599Free CancellationRating
7.0
2,924 reviews
Search Iberia flights
American AirlinesPriceFrom $664Free CancellationRating
7.2
10,000 reviews
Search American Airlines 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 $844, but momondo users have found American Airlines deals from London to San Diego from as low as $664 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, 2,924 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 $804.

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
Poway
Imperial Beach
San Ysidro
Borrego Springs
Lemon Grove
Alpine
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

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

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 10/15
Wed 10/22

Find better results for your trip to the United States