What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

What is the most punctual flight time for London to San Diego flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

What is the cheapest airline that flies from London Heathrow to San Diego?

WestJet is the most popular carrier operating from London Heathrow to San Diego

What airlines fly to San Diego?

British Airways, United Airlines and American Airlines are the top three most popular airlines that fly to San Diego from London Heathrow Airport according to our data. British Airways is the first choice among our users, with 50% of people opting to fly with this airline when traveling to San Diego. Keep in mind that there are 4 different airlines that fly to San Diego on a routine basis, so you have a few additional options to choose from.

Which airline has the best punctuality record on London to San Diego flights?

According to our data, British Airways have had the least number of delays on this route over the last 12 months; with about 16% of their flights experiencing any sort of delay.

How often are flights from London to San Diego delayed?

Historically, on average around 16% of flights between London and San Diego have experienced a delay on any given week. The average delay length over the past 12 months has been 146 minutes.

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?

As of January 2026, there are 4 operators available to choose from 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.

$424 Cheap Flights from London Heathrow Airport to San Diego in 2026

Q: How many flights depart from London Heathrow Airport to San Diego on average per day?

As of January 2026, 5 flights take off from London Heathrow Airport and land in San Diego each day. The most common flight departure time for this route is 12:00PM, with 100% of daily flights taking off in the afternoon.

Q: What is the typical price of a round-trip flight between London Heathrow Airport and San Diego?

Prices are currently typical for flights on this route. Typical prices usually range from $617 to $775. The lowest price recently found on this route was $621.

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Find the cheapest flights from London Heathrow Airport to San Diego

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:20 am - 3:57 pm

LHR

SAN

15h 37m1 stop

6:00 pm - 12:35 pm

SAN

LHR

10h 35mnonstop

$621American Airlines

Mon, Jan 19 - Wed, Jan 28

6:35 am - 4:45 pm

LHR

SAN

17h 10m1 stop

12:40 pm - 9:40 am

SAN

LHR

13h 00m1 stop

$622United Airlines

Wed, Mar 18 - Wed, Apr 15

12:50 pm - 4:10 pm

LHR

SAN

11h 20mnonstop

12:45 pm - 11:40 am

SAN

LHR

14h 55m1 stop

$623Iberia

Tue, Jan 20 - Wed, Feb 18

12:50 pm - 4:10 pm

LHR

SAN

11h 20mnonstop

6:00 pm - 12:35 pm

SAN

LHR

10h 35mnonstop

$624British Airways

Thu, Feb 19 - Thu, Feb 26

12:50 pm - 4:10 pm

LHR

SAN

11h 20mnonstop

6:00 pm - 12:35 pm

SAN

LHR

10h 35mnonstop

$625British Airways

Tue, Feb 3 - Sun, Feb 8

1:25 pm - 12:03 pm

LHR

SAN

30h 38m2 stops

6:05 pm - 6:30 am

SAN

LHR

28h 25m2 stops

$626Air Canada

Tue, Feb 3 - Sun, Feb 8

7:40 am - 7:54 pm

LHR

SAN

20h 14m2 stops

7:45 am - 11:50 am

SAN

LHR

20h 05m2 stops

$628Multiple Airlines

Sun, Feb 1 - Sat, Feb 7

1:25 pm - 11:53 am

LHR

SAN

30h 28m2 stops

6:05 pm - 7:10 am

SAN

LHR

29h 05m2 stops

$629Air Canada

Mon, Jan 19 - Sun, Feb 1

1:25 pm - 10:35 pm

LHR

SAN

17h 10m2 stops

6:05 pm - 6:30 am

SAN

LHR

28h 25m2 stops

$632Multiple Airlines

Thu, Feb 19 - Thu, Feb 26

1:25 pm - 11:53 am

LHR

SAN

30h 28m2 stops

12:10 pm - 11:50 am

SAN

LHR

15h 40m2 stops

$634Multiple Airlines

Thu, Feb 12 - Tue, Mar 31

United Airlines flights from London Heathrow Airport to San Diego

Our best United Airlines deals on London Heathrow Airport to San Diego flight tickets

United Airlines

Mar 18

LHR6:35 amLondon Heathrow

17h 10m

1 stop

SAN4:45 pmSan Diego

Apr 15

SAN12:40 pmSan Diego

13h 00m

1 stop

LHR9:40 amLondon Heathrow

$622

Find similar

United Airlines

Apr 30

LHR6:55 amLondon Heathrow

16h 30m

1 stop

SAN3:25 pmSan Diego

May 31

SAN10:30 pmSan Diego

24h 15m

1 stop

LHR6:45 amLondon Heathrow

$638

Find similar

United Airlines

Apr 30

LHR6:55 amLondon Heathrow

23h 21m

2 stops

SAN10:16 pmSan Diego

May 31

SAN9:55 pmSan Diego

25h 00m

1 stop

LHR6:55 amLondon Heathrow

$644

Find similar

Iberia flights from London Heathrow Airport to San Diego

Our best Iberia deals on London Heathrow Airport to San Diego flight tickets

Iberia

Jan 20

LHR12:50 pmLondon Heathrow

11h 20m

SAN4:10 pmSan Diego

Feb 18

SAN12:45 pmSan Diego

14h 55m

1 stop

LHR11:40 amLondon Heathrow

$623

Find similar

Iberia

May 1

LHR4:25 pmLondon Heathrow

15h 31m

1 stop

SAN11:56 pmSan Diego

May 13

SAN4:45 pmSan Diego

10h 45m

LHR11:30 amLondon Heathrow

$640

Find similar

Iberia

Jan 30

LHR2:25 pmLondon Heathrow

15h 33m

1 stop

SAN9:58 pmSan Diego

Feb 1

SAN6:00 pmSan Diego

10h 35m

LHR12:35 pmLondon Heathrow

$664

Find similar

momondo Fare Finder

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

Mon 1/19

8:20 am-3:57 pm

1 stop15h 37m

San Diego

Wed 1/28

6:00 pm-12:35 pm

Nonstop10h 35m

$621

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 3/18

6:35 am-4:45 pm

1 stop17h 10m

San Diego

Wed 4/15

12:40 pm-9:40 am

1 stop13h 00m

$622

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 1/20

12:50 pm-4:10 pm

Nonstop11h 20m

San Diego

Wed 2/18

12:45 pm-11:40 am

1 stop14h 55m

$623

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 2/19

12:50 pm-4:10 pm

Nonstop11h 20m

San Diego

Thu 2/26

6:00 pm-12:35 pm

Nonstop10h 35m

$624

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 2/3

12:50 pm-4:10 pm

Nonstop11h 20m

San Diego

Sun 2/8

6:00 pm-12:35 pm

Nonstop10h 35m

$625

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 2/3

1:25 pm-12:03 pm

2 stops30h 38m

San Diego

Sun 2/8

6:05 pm-6:30 am

2 stops28h 25m

$626

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Sun 2/1

7:40 am-7:54 pm

2 stops20h 14m

San Diego

Sat 2/7

7:45 am-11:50 am

2 stops20h 05m

$628

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 1/19

1:25 pm-11:53 am

2 stops30h 28m

San Diego

Sun 2/1

6:05 pm-7:10 am

2 stops29h 05m

$629

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 2/19

1:25 pm-10:35 pm

2 stops17h 10m

San Diego

Thu 2/26

6:05 pm-6:30 am

2 stops28h 25m

$632

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 2/12

1:25 pm-11:53 am

2 stops30h 28m

San Diego

Tue 3/31

12:10 pm-11:50 am

2 stops15h 40m

$634

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Delays

Other information

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 Monday. Travelers who choose to depart for San Diego on a Monday will often find tickets for as low as $741. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $919. 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 $782. Flights at noon are often more expensive with an average ticket price of $801.

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 $780 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 $714 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?

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to San Diego.

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 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	$554
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 $554. The best round-trip flight deal from London Heathrow Airport to San Diego found on momondo in the last 72 hours is $886.

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?
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?
As of January 2026, there are 4 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London Heathrow Airport to San Diego is Boeing 777 (47.48% of total bookings). The next most popular plane models are Boeing 777-300ER (24.51%), Boeing 787-8 Dreamliner (9.00%), and Airbus A350-1000 (8.46%).
What is the most popular airline from London Heathrow Airport to San Diego?
Based on momondo bookings for flights between London Heathrow Airport and San Diego, the leading airline is British Airways, making up 55% of the total bookings. Other popular airlines include American Airlines with 22%, Iberia with 12%, and United Airlines with 11%.

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 Airlines	PriceFrom $533	Free Cancellation	Rating 7.4 9,134 reviews	Search United Airlines flights
British Airways	PriceFrom $589	Free Cancellation	Rating 6.7 7,657 reviews	Search British Airways flights
Iberia	PriceFrom $599	Free Cancellation	Rating 7.0 3,073 reviews	Search Iberia flights
American Airlines	PriceFrom $664	Free Cancellation	Rating 7.2 11,083 reviews	Search American Airlines 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 6 flights/week on average for this route. A good American Airlines flight deal for London Heathrow Airport to San Diego starts from $664 round-trip, up to an average price of $851. Our users have rated American Airlines at 7.2/10.
Iberia Flights From London Heathrow Airport to San Diego
Across 3,073 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 $817. Price data is based on momondo searches in the last 72 hours.

Coronado

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El Cajon

Julian

Poway

National City

Imperial Beach

Borrego Springs

La Mesa

San Ysidro

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.

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Cheap flights from London Heathrow Airport to San Diego from $424

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Use the filters below to find and compare flights from London Heathrow Airport to San Diego that are best for you.

See travel insights to San Diego from

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

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?

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 $782. Flights at noon are often more expensive with an average ticket price of $801.

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?

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?

No. A direct flight is the cheapest option for a flight between London Heathrow Airport to San Diego.

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.

What is the cheapest airline that flies from London Heathrow to San Diego?

WestJet is the most popular carrier operating from London Heathrow to San Diego

What airlines fly to San Diego?

How often are flights from London to San Diego delayed?

Historically, on average around 16% of flights between London and San Diego have experienced a delay on any given week. The average delay length over the past 12 months has been 146 minutes.

What is the most punctual flight time for London to San Diego flights?

Generally, flights departing in the morning tend to experience fewer delays. Flights in the early afternoon have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on London to San Diego flights?

According to our data, British Airways have had the least number of delays on this route over the last 12 months; with about 16% of their flights experiencing any sort of delay.

How many flights depart from London Heathrow Airport to San Diego on average per day?

As of January 2026, 5 flights take off from London Heathrow Airport and land in San Diego each day. The most common flight departure time for this route is 12:00PM, with 100% of daily flights taking off in the afternoon.

How many flights depart from London Heathrow Airport to San Diego on average per week?

36 flights are operational weekly from London Heathrow Airport to San Diego as of January 2026. The most popular departure day for this route is Mon, with 17% of flights per week taking off on this day.

When to book flights from London Heathrow Airport to San Diego

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

Fastest flight time

Direct flights

Airports in San Diego

How far is London Heathrow to San Diego by plane?

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

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?

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

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

American Airlines Flights From London Heathrow Airport to San Diego

Iberia Flights From London Heathrow Airport to San Diego

Traveling to a place near San Diego?

Why use momondo?

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

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

How can momondo help me find flights 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?

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.