Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from London Heathrow Airport to San Diego from $407

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 9/5. 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.
Search flight deals

Find the cheapest flights from London Heathrow Airport to San Diego

Cheap round-trip flights

Lufthansa Logo
6:55 am - 3:25 pmLHR-SAN
16h 30m1 stop
Lufthansa Logo
12:52 pm - 9:40 amSAN-LHR
12h 48m1 stop
$590Lufthansa
Find Deal
mar., sep. 16 - jue., sep. 25
Lufthansa Logo
7:25 am - 3:25 pmLHR-SAN
16h 00m1 stop
Lufthansa Logo
12:52 pm - 9:40 amSAN-LHR
12h 48m1 stop
$591Lufthansa
Find Deal
mié., sep. 10 - mié., sep. 17
Logo
7:40 am - 7:29 amLHR-SAN
31h 49m3 stops
Logo
6:15 am - 7:25 pmSAN-LHR
29h 10m3 stops
$621
Find Deal
vie., sep. 12 - sáb., sep. 20
United Airlines Logo
7:25 am - 3:25 pmLHR-SAN
16h 00m1 stop
United Airlines Logo
10:38 am - 11:25 amSAN-LHR
16h 47m2 stops
$625United Airlines
Find Deal
mar., sep. 9 - mar., sep. 16
United Airlines Logo
6:55 am - 3:25 pmLHR-SAN
16h 30m1 stop
United Airlines Logo
11:15 am - 12:20 pmSAN-LHR
17h 05m1 stop
$626United Airlines
Find Deal
mar., sep. 16 - mar., sep. 30
SWISS Logo
6:00 am - 8:48 pmLHR-SAN
22h 48m2 stops
SWISS Logo
1:58 pm - 7:20 pmSAN-LHR
21h 22m2 stops
$629SWISS
Find Deal
mar., sep. 9 - mar., sep. 16
SWISS Logo
6:00 am - 10:02 pmLHR-SAN
24h 02m2 stops
SWISS Logo
1:59 pm - 5:50 pmSAN-LHR
43h 51m2 stops
$630SWISS
Find Deal
mar., sep. 16 - jue., sep. 25
Logo
9:30 am - 7:13 pmLHR-SAN
17h 43m2 stops
Logo
6:53 am - 6:35 amSAN-LHR
15h 42m2 stops
$675
Find Deal
mar., sep. 23 - mar., sep. 30
British Airways Logo
11:30 am - 2:50 pmLHR-SAN
11h 20mnonstop
British Airways Logo
11:30 am - 9:00 amSAN-LHR
13h 30m1 stop
$681British Airways
Find Deal
mar., sep. 9 - mar., sep. 16
British Airways Logo
11:30 am - 2:50 pmLHR-SAN
11h 20mnonstop
British Airways Logo
3:01 pm - 12:45 pmSAN-LHR
13h 44m1 stop
$682British Airways
Find Deal
mié., sep. 10 - mié., sep. 17

Lufthansa flights from London Heathrow Airport to San Diego

Our best Lufthansa deals on London Heathrow Airport to San Diego flight tickets
Lufthansa
Sep 16
LHR6:55 amLondon Heathrow
16h 30m
1 stop
SAN3:25 pmSan Diego
Sep 25
SAN12:52 pmSan Diego
12h 48m
1 stop
LHR9:40 amLondon Heathrow
$590
Find similar
Lufthansa
Sep 10
LHR7:25 amLondon Heathrow
16h 00m
1 stop
SAN3:25 pmSan Diego
Sep 17
SAN12:52 pmSan Diego
12h 48m
1 stop
LHR9:40 amLondon Heathrow
$591
Find similar
Lufthansa
Nov 3
LHR7:15 pmLondon Heathrow
28h 30m
1 stop
SAN3:45 pmSan Diego
Feb 11
SAN5:35 pmSan Diego
14h 15m
1 stop
LHR3:50 pmLondon Heathrow
$619
Find similar

SWISS flights from London Heathrow Airport to San Diego

Our best SWISS deals on London Heathrow Airport to San Diego flight tickets
SWISS
Sep 9
LHR6:00 amLondon Heathrow
22h 48m
2 stops
SAN8:48 pmSan Diego
Sep 16
SAN1:58 pmSan Diego
21h 22m
2 stops
LHR7:20 pmLondon Heathrow
$629
Find similar
SWISS
Sep 16
LHR6:00 amLondon Heathrow
24h 02m
2 stops
SAN10:02 pmSan Diego
Sep 25
SAN1:59 pmSan Diego
43h 51m
2 stops
LHR5:50 pmLondon Heathrow
$630
Find similar
SWISS
Sep 16
LHR6:00 amLondon Heathrow
24h 02m
2 stops
SAN10:02 pmSan Diego
Sep 23
SAN4:11 pmSan Diego
17h 39m
2 stops
LHR5:50 pmLondon Heathrow
$631
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated agosto 14, 2025.
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

mar. 9/16

6:55 am-3:25 pm

1 stop16h 30m

San Diego

jue. 9/25

12:52 pm-9:40 am

1 stop12h 48m

$590

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

mié. 9/10

7:25 am-3:25 pm

1 stop16h 00m

San Diego

mié. 9/17

12:52 pm-9:40 am

1 stop12h 48m

$591

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

vie. 9/12

7:40 am-7:29 am

3 stops31h 49m

San Diego

sáb. 9/20

6:15 am-7:25 pm

3 stops29h 10m

$621

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

mar. 9/9

7:25 am-3:25 pm

1 stop16h 00m

San Diego

mar. 9/16

10:38 am-11:25 am

2 stops16h 47m

$625

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

mar. 9/16

6:55 am-3:25 pm

1 stop16h 30m

San Diego

mar. 9/30

11:15 am-12:20 pm

1 stop17h 05m

$626

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

mar. 9/9

6:00 am-8:48 pm

2 stops22h 48m

San Diego

mar. 9/16

1:58 pm-7:20 pm

2 stops21h 22m

$629

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

mar. 9/16

6:00 am-10:02 pm

2 stops24h 02m

San Diego

jue. 9/25

1:59 pm-5:50 pm

2 stops43h 51m

$630

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

mar. 9/23

9:30 am-7:13 pm

2 stops17h 43m

San Diego

mar. 9/30

6:53 am-6:35 am

2 stops15h 42m

$675

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

mar. 9/9

11:30 am-2:50 pm

Nonstop11h 20m

San Diego

mar. 9/16

11:30 am-9:00 am

1 stop13h 30m

$681

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

mié. 9/10

11:30 am-2:50 pm

Nonstop11h 20m

San Diego

mié. 9/17

3:01 pm-12:45 pm

1 stop13h 44m

$682

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 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 typical price of a round-trip flight between London Heathrow Airport 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 January, then departing from London Heathrow Airport during the month February is also very affordable. Most momondo users find prices during this month for around $660.

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. Travelers who choose to depart for San Diego on a Tuesday will often find tickets for as low as $738. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $880. 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 $764. Flights at noon are often more expensive with an average ticket price of $808.

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 $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 Heathrow Airport for as low as $672 on momondo.

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

There are 3 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 4% 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 August 2025, prices for London Heathrow Airport to San Diego flights are approximately 1% more expensive 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 round-trip 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

$407

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 $407. The best round-trip flight deal from London Heathrow Airport to San Diego found on momondo in the last 72 hours is $590.
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 near San Diego: San Diego (SAN)
Search flight deals

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

    A flight from London Heathrow to San Diego will travel around 5468.7 mi. A reasonable flight in good conditions will take 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 are updated daily.

  • 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 necessary travel and health documents for your San Diego Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • 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
United AirlinesPriceFrom $533Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
British AirwaysPriceFrom $572Free CancellationRating
6.6
7,266 reviews
Search British Airways flights
American AirlinesPriceFrom $579Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
IberiaPriceFrom $599Free CancellationRating
7.0
2,878 reviews
Search Iberia flights

  • American Airlines Flights From London Heathrow Airport to San Diego

    American Airlines is one of the most popular airlines flying from London Heathrow Airport to San Diego, operating 13 flights/week on average for this route. A good American Airlines flight deal for London Heathrow Airport to San Diego starts from $579 round-trip, up to an average price of $780. Our users have rated American Airlines at 7.2/10.

  • Iberia Flights From London Heathrow Airport to San Diego

    Across 2,878 Iberia reviews on momondo, the average score is 7.0/10. Iberia flies from London Heathrow Airport to San Diego about 6 times each week, with ticket deals ranging from $599 to $780. Price data is based on momondo searches in the last 72 hours.

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
National City
La Mesa
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?

momondo does allow users to show only those flights to San Diego from London which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Diego from London.

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 not ready to book a flight from London to San Diego now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Diego and let you know 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
mar. 8/19
mar. 8/26
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States