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Cheap flights from London Heathrow Airport to San Diego from £287

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAN
9 Mar — 16 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to San Diego are usually found in February or January, booked 64 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap flight deals from Heathrow to San Diego

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to San Diego
Explore the most affordable flight options available from Heathrow to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 February 2026.

Sat 28/208:05
LHR
-
SAN
1 stop19h 55m
JetBlue
Sun 8/321:10
SAN
-
LHR
1 stop16h 35m
JetBlue
Deal found 4/2£437
Thu 26/207:25
LHR
-
SAN
1 stop20h 35m
JetBlue
Tue 10/312:49
SAN
-
LHR
1 stop13h 41m
JetBlue
Deal found 6/2£445
Mon 23/209:20
LHR
-
SAN
1 stop18h 04m
JetBlue
Mon 9/315:35
SAN
-
LHR
1 stop32h 20m
JetBlue
Deal found 7/2£447
Thu 19/207:25
LHR
-
SAN
1 stop20h 35m
JetBlue
Mon 23/221:10
SAN
-
LHR
1 stop16h 30m
JetBlue
Deal found 4/2£448
Fri 20/208:05
LHR
-
SAN
1 stop19h 55m
JetBlue
Tue 3/312:49
SAN
-
LHR
1 stop24h 51m
JetBlue
Deal found 6/2£452
Sat 21/209:20
LHR
-
SAN
1 stop18h 04m
JetBlue
Sat 28/221:10
SAN
-
LHR
1 stop15h 35m
JetBlue
Deal found 6/2£455
Sat 21/209:20
LHR
-
SAN
1 stop18h 04m
JetBlue
Tue 24/220:44
SAN
-
LHR
1 stop26h 11m
JetBlue
Deal found 7/2£456
Wed 18/207:25
LHR
-
SAN
1 stop36h 14m
JetBlue
Tue 3/321:10
SAN
-
LHR
1 stop16h 30m
JetBlue
Deal found 4/2£458
Sun 22/207:45
LHR
-
SAN
1 stop20h 15m
JetBlue
Mon 2/321:10
SAN
-
LHR
1 stop16h 30m
JetBlue
Deal found 5/2£459
Sat 21/209:20
LHR
-
SAN
1 stop18h 04m
JetBlue
Wed 25/215:35
SAN
-
LHR
1 stop31h 20m
JetBlue
Deal found 7/2£459

Find flight deals from Heathrow to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 7 February 2026.

Round-trip from

£437

One-way from

£287

Popular in

July

Cheapest in

February

Average price

£484

Good round-trip deal

£538 or less

Good one-way deal

£517 or less
JetBlue
  • JetBlue
  • 28/2-8/3
  • 2 total stops
  • 36h 30m total
  • London to San Diego
Search Deals
WestJet
  • WestJet
  • 5/3
  • 1 total stop
  • 28h 57m total
  • London to San Diego
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£67 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from London Heathrow to San Diego.
Search Deals
Price to beat on a one-way flight from London Heathrow to San Diego.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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, Cheapflights users made 858,174 searches. Data last updated 7 February 2026.
Use the filters below to find and compare flights from London Heathrow Airport to San Diego that are best for you.

Fly from

Heathrow

Fly to

San Diego

Route

Depart

Return

Price

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 9/3

08:05-19:58

1 stop18h 53m

San Diego

Tue 17/3

21:05-21:40

1 stop17h 35m

£445

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Sun 8/3

09:20-18:28

1 stop17h 08m

San Diego

Mon 16/3

21:05-21:40

1 stop17h 35m

£445

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Sat 14/3

08:05-19:52

1 stop18h 47m

San Diego

Sun 15/3

21:05-20:45

1 stop16h 40m

£445

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 19/2

09:20-19:24

1 stop18h 04m

San Diego

Fri 27/2

21:10-22:00

1 stop16h 50m

£448

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 23/2

09:20-14:38

1 stop37h 18m

San Diego

Mon 9/3

21:10-21:40

1 stop17h 30m

£450

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Fri 20/2

09:20-19:24

1 stop18h 04m

San Diego

Fri 27/2

21:10-22:00

1 stop16h 50m

£467

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 18/2

07:25-20:00

1 stop20h 35m

San Diego

Sat 28/2

21:10-20:45

1 stop15h 35m

£489

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Fri 20/2

08:05-20:00

1 stop19h 55m

San Diego

Wed 25/2

21:10-21:40

1 stop16h 30m

£489

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 21/4

06:55-15:25

1 stop16h 30m

San Diego

Tue 28/4

09:46-10:40

2 stops16h 54m

£527

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 22/4

07:25-15:25

1 stop16h 00m

San Diego

Tue 28/4

16:21-14:10

1 stop13h 49m

£527

Flights are sorted by cheapest return flights first.

Deals found on 4/2

Showing 1-10 of 23 results
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2
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Best time to book a flight from Heathrow to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to San Diego

How far ahead should I book a flight from London Heathrow Airport to San Diego?

Use this chart to determine the optimal time to book a return flight from Heathrow to San Diego. Price data was last updated on 30 January 2026.

The best time to book flights from London Heathrow Airport to San Diego is 64 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London Heathrow Airport to San Diego?

Currently, December is the cheapest month in which you can book a flight from London Heathrow Airport to San Diego (average of £327). Flying from London Heathrow Airport to San Diego in July is currently the most expensive (average of £408). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to SAN?

Find hourly flight availability from Heathrow to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 February 2026.

When flying from London Heathrow Airport to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated 7 February 2026.
Read reviews from past customers who have flown with Virgin Atlantic, United Airlines, andIberia from London Heathrow Airport to San Diego. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Boarding

7.7

Entertainment

7.6

Comfort

7.3

Food

6.9

Overall

7.5

Crew

8.2

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
678 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Boarding

7.7

Entertainment

7.6

Comfort

7.3

Food

6.9

Overall

7.5

Crew

8.2

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
United Airlines
7.4
Good
9,254 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Boarding

7.7

Entertainment

7.6

Comfort

7.3

Food

6.9

Overall

7.5

Crew

8.2

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Iberia
7.0
Good
3,106 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Boarding

7.7

Entertainment

7.6

Comfort

7.3

Food

6.9

Overall

7.5

Crew

8.2

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Lufthansa
6.8
Okay
7,773 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Boarding

7.7

Entertainment

7.6

Comfort

7.3

Food

6.9

Overall

7.5

Crew

8.2

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,720 reviews
Virgin Atlantic
7.5
Good
678 reviews
Check prices

Boarding

7.7

Entertainment

7.6

Comfort

7.3

Food

6.9

Overall

7.5

Crew

8.2

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Related info for your journey

Find useful and relevant information for your journey from Heathrow to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Diego from London Heathrow?

    San Diego (SAN) is the airport you will fly into if you book a flight from London Heathrow to San Diego. You should not have trouble finding flights to San Diego from London Heathrow; the airport handles an average of 5 inbound flights from London Heathrow per day. You should also have plenty of airline options to choose from since 10 airlines have flights to the San Diego airport from London Heathrow. It is only a 2.6 mi journey from San Diego (SAN) to San Diego’s city center.

  • How long is the flight from London Heathrow Airport to San Diego?

    JetBlue can get you from London Heathrow Airport to San Diego in just under 18h 53m. Your travel time can differ by up to . London Heathrow Airport and San Diego are separated by a distance of 5469 mi.

  • What are the cheapest airlines flying from London Heathrow Airport to San Diego round-trip?

    Flying on Air Canada is currently your cheapest option to San Diego, with prices starting at £382. Additional return tickets that might be worth considering are offered by Lufthansa and United Airlines, with the lowest prices starting at £415 and £418, respectively. You may be able to fly from London Heathrow Airport to San Diego for 33% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from London Heathrow Airport to San Diego one-way?

    The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as £306. However, be on the lookout for offers from Iberia and British Airways, as they are both options that can get you from London Heathrow Airport to San Diego for a low price.

  • What are the most reliable airlines from London Heathrow Airport to San Diego?

    No one likes to see their flight delayed. When booking a flight from London Heathrow Airport to San Diego consider choosing American Airlines (71%), Alaska Airlines (71%) or Aer Lingus (71%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from London Heathrow Airport to San Diego?

    Looking at all options, your cheapest flight can be booked for £378. While the most popular route (London Heathrow - San Diego) can be booked for £386 on average, our data indicates £1,939 when flying from London Heathrow Airport to San Diego.

  • Can I find deals for flights from Heathrow to San Diego that include hotel bookings?

    Yes. In addition to deals on Heathrow to San Diego flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to San Diego.

  • Can I find deals for business class flights from Heathrow to San Diego?

    Yes. Cheapflights offers flight deals from Heathrow to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to San Diego?

    Currently, December is the cheapest month in which you can book a flight from London Heathrow Airport to San Diego (average of £327). Flying from London Heathrow Airport to San Diego in July is currently the most expensive (average of £408). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
Coronado
El Cajon

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Fly from Heathrow to San Diego on these airlines

Choose from the following airlines for your flight from Heathrow to San Diego. Flights are based on user searches made on Cheapflights and were last updated on 7 February 2026.
British Airways flights from London Heathrow to San Diego
Virgin Atlantic flights from London Heathrow to San Diego
Finnair flights from London Heathrow to San Diego

Top 10 airlines flying from Heathrow to San Diego

Discover the top 10 airlines that operate flights from Heathrow to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 7 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£382Average£508FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
LufthansaCheapest£415Average£481FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£418Average£562FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
KLMCheapest£449Average£668FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£449Average£589FlexibilityNo cancel feeOn-time70%
Search British Airways flights
FinnairCheapest£452Average£623FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Virgin AtlanticCheapest£464Average£516FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
JetBlueCheapest£478Average£873FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
American AirlinesCheapest£478Average£654FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
IberiaCheapest£488Average£610FlexibilityNo cancel feeOn-time77%
Search Iberia flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to San Diego?

When you search for this flight from Heathrow to San Diego, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to San Diego?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to San Diego.

Can Cheapflights find flights from Heathrow to San Diego with no change fees?

Need flexible booking options for your flight to San Diego from Heathrow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Heathrow to San Diego become cheaper?

Not ready to book yet? You can track prices for flights from Heathrow to San Diego on Cheapflights with our Price Alert feature and get notified when better prices are available.

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