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Cheap flights from London Heathrow Airport to San Diego from £364

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 Heathrow Airport to San Diego departing on 8/2. 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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0 bags

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Find the cheapest flights from London Heathrow Airport to San Diego

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
14:30 - 12:03
LHR
-
SAN
29h 33m
1 stop
Multiple Airlines Logo
12:55 - 09:40
SAN
-
LHR
12h 45m
1 stop
£426Multiple Airlines
Sun, 8 Feb - Sun, 22 Feb
United Airlines Logo
07:25 - 20:12
LHR
-
SAN
20h 47m
2 stops
United Airlines Logo
08:54 - 09:40
SAN
-
LHR
16h 46m
1 stop
£426United Airlines
Mon, 20 Apr - Sun, 3 May
Lufthansa Logo
13:45 - 20:49
LHR
-
SAN
15h 04m
1 stop
Lufthansa Logo
09:54 - 07:25
SAN
-
LHR
13h 31m
1 stop
£427Lufthansa
Tue, 17 Feb - Sun, 1 Mar
Air Canada Logo
14:30 - 12:39
LHR
-
SAN
30h 09m
2 stops
Air Canada Logo
06:30 - 11:20
SAN
-
LHR
20h 50m
2 stops
£428Air Canada
Wed, 18 Feb - Thu, 5 Mar
Air Canada Logo
14:30 - 17:24
LHR
-
SAN
34h 54m
1 stop
Air Canada Logo
18:05 - 11:50
SAN
-
LHR
33h 45m
1 stop
£428Air Canada
Tue, 17 Feb - Sat, 28 Feb
British Airways Logo
12:50 - 16:10
LHR
-
SAN
11h 20mdirect
British Airways Logo
09:29 - 06:35
SAN
-
LHR
13h 06m
1 stop
£429British Airways
Mon, 23 Feb - Wed, 4 Mar
Air Canada Logo
11:10 - 14:49
LHR
-
SAN
35h 39m
2 stops
Air Canada Logo
06:30 - 07:10
SAN
-
LHR
16h 40m
2 stops
£430Air Canada
Tue, 17 Feb - Tue, 3 Mar
Air Canada Logo
18:00 - 22:35
LHR
-
SAN
36h 35m
2 stops
Air Canada Logo
12:40 - 06:30
SAN
-
LHR
33h 50m
1 stop
£431Air Canada
Tue, 17 Feb - Wed, 4 Mar
Multiple Airlines Logo
07:40 - 20:51
LHR
-
SAN
21h 11m
2 stops
Multiple Airlines Logo
17:55 - 12:00
SAN
-
LHR
34h 05m
1 stop
£431Multiple Airlines
Sat, 14 Feb - Thu, 19 Feb
British Airways Logo
12:50 - 17:10
LHR
-
SAN
11h 20mdirect
British Airways Logo
13:34 - 10:25
SAN
-
LHR
13h 51m
1 stop
£432British Airways
Tue, 17 Mar - Tue, 24 Mar

Lufthansa flights from London Heathrow Airport to San Diego

Our best Lufthansa deals on London Heathrow Airport to San Diego flight tickets
Lufthansa
17 Feb
LHR13:45London Heathrow
15h 04m
1 stop
SAN20:49San Diego
1 Mar
SAN09:54San Diego
13h 31m
1 stop
LHR07:25London Heathrow
£427
Lufthansa
4 May
LHR06:55London Heathrow
16h 30m
1 stop
SAN15:25San Diego
8 May
SAN10:55San Diego
15h 15m
1 stop
LHR10:10London Heathrow
£435
Lufthansa
13 Feb
LHR09:30London Heathrow
22h 59m
2 stops
SAN00:29San Diego
21 Feb
SAN07:45San Diego
15h 40m
1 stop
LHR07:25London Heathrow
£447

Air Canada flights from London Heathrow Airport to San Diego

Our best Air Canada deals on London Heathrow Airport to San Diego flight tickets
Air Canada
18 Feb
LHR14:30London Heathrow
30h 09m
2 stops
SAN12:39San Diego
5 Mar
SAN06:30San Diego
20h 50m
2 stops
LHR11:20London Heathrow
£428
Air Canada
17 Feb
LHR14:30London Heathrow
34h 54m
1 stop
SAN17:24San Diego
28 Feb
SAN18:05San Diego
33h 45m
1 stop
LHR11:50London Heathrow
£428
Air Canada
17 Feb
LHR11:10London Heathrow
35h 39m
2 stops
SAN14:49San Diego
3 Mar
SAN06:30San Diego
16h 40m
2 stops
LHR07:10London Heathrow
£430

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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 29 January 2026.
Use the filters below to find and compare flights from London Heathrow Airport to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Sun 8/2

14:30-12:03

1 stop29h 33m

San Diego

Sun 22/2

12:55-09:40

1 stop12h 45m

£426

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 20/4

07:25-20:12

2 stops20h 47m

San Diego

Sun 3/5

08:54-09:40

1 stop16h 46m

£426

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 17/2

13:45-20:49

1 stop15h 04m

San Diego

Sun 1/3

09:54-07:25

1 stop13h 31m

£427

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 18/2

14:30-12:39

2 stops30h 09m

San Diego

Thu 5/3

06:30-11:20

2 stops20h 50m

£428

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 17/2

14:30-17:24

1 stop34h 54m

San Diego

Sat 28/2

18:05-11:50

1 stop33h 45m

£428

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 23/2

12:50-16:10

Nonstop11h 20m

San Diego

Wed 4/3

09:29-06:35

1 stop13h 06m

£429

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 17/2

11:10-14:49

2 stops35h 39m

San Diego

Tue 3/3

06:30-07:10

2 stops16h 40m

£430

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 17/2

18:00-22:35

2 stops36h 35m

San Diego

Wed 4/3

12:40-06:30

1 stop33h 50m

£431

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Sat 14/2

07:40-20:51

2 stops21h 11m

San Diego

Thu 19/2

17:55-12:00

1 stop34h 05m

£431

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 17/3

12:50-17:10

Nonstop11h 20m

San Diego

Tue 24/3

13:34-10:25

1 stop13h 51m

£432

Flights are sorted by cheapest return 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 Heathrow Airport 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 January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £481.

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

The cheapest day to depart from London Heathrow Airport to San Diego is on a Tuesday when prices can be found for as low as £557. Flights from London Heathrow Airport to San Diego on a Saturday will generally be more expensive and average around £623. 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 Heathrow Airport to San Diego when you can find flight prices for as low as £576. Flying to San Diego in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at midday because they tend to be around £586. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London Heathrow to San Diego flight route?

Fly from London Heathrow to San Diego for the best London Heathrow - 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 Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around £567 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 Heathrow Airport for as low as £521 on momondo.

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

There are 4 cabin classes available to choose from on London Heathrow 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 Heathrow Airport to San Diego flights?

You could potentially save up to 17% on your flight if you consider stops on a London Heathrow Airport to San Diego flight.

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

As of January 2026, prices for London Heathrow Airport to San Diego flights are approximately 6% cheaper when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to San Diego

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

Cheap London Heathrow Airport to San Diego (LHR to SAN) flight deals and tips

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

Best price found

£540

Fastest flight time

11h 20m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from London Heathrow Airport in the past 72 hours is £540. The best return flight deal from London Heathrow Airport to San Diego found on momondo in the last 72 hours is £487.
The fastest flight from London Heathrow Airport to San Diego takes 11h 20m
Direct flights go from London Heathrow Airport to San Diego every day.
There is 1 airport in San Diego. From London Heathrow Airport there are direct flights to San Diego (SAN).
Search flight deals

  • How far is London Heathrow to San Diego by plane?

    London Heathrow and San Diego are 5468.7 mi apart from one another. In terms of flight time, this usually takes a little over 11h 20m.

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

    Prices for flights from London Heathrow Airport to San Diego Airport were last updated today.

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

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

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

    The travel and health documents required for your trip to San Diego Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Diego Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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

Best airlines flying from London Heathrow Airport to San Diego

Compare and see reviews for airlines that fly from London Heathrow Airport to San Diego with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom £376Free CancellationRating
7.1
10,667 reviews
Search Air Canada flights
LufthansaPriceFrom £405Free CancellationRating
6.8
7,756 reviews
Search Lufthansa flights
KLMPriceFrom £420Free CancellationRating
7.7
1,443 reviews
Search KLM flights
United AirlinesPriceFrom £430Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
British AirwaysPriceFrom £431Free CancellationRating
6.7
7,705 reviews
Search British Airways flights
FinnairPriceFrom £432Free CancellationRating
7.6
1,356 reviews
Search Finnair flights
American AirlinesPriceFrom £435Free CancellationRating
7.2
11,206 reviews
Search American Airlines flights
Virgin AtlanticPriceFrom £454Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
IberiaPriceFrom £463Free CancellationRating
7.0
3,100 reviews
Search Iberia flights
JetBluePriceFrom £470Free CancellationRating
7.2
2,891 reviews
Search JetBlue flights

  • Finnair Flights From London Heathrow Airport to San Diego

    Finnair flies from London Heathrow Airport to San Diego around 6 times per week, with 1,356 momondo users rating the airline 7.6/10. The cheapest Finnair deal from London Heathrow Airport to San Diego in the last 72 hours was £432 (round-trip), much lower than the average airfare cost of £597 for Finnair flights on this route.

  • American Airlines Flights From London Heathrow Airport to San Diego

    Another popular option for London Heathrow Airport to San Diego flights is American Airlines (7.2/10, 11,206 ratings). American Airlines flies from London Heathrow Airport to San Diego around 6 times per week, with deals starting from £435 round-trip and rising to an average price of around £634.

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?

All flight searches from London to San Diego on momondo can be filtered to show those which offer flexible booking policies.

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.
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