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Cheap flights from London Heathrow Airport to San Diego from £327

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 13/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAN
10 Jan — 17 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London Heathrow to San Diego are usually found in January or September, booked 64 days in advance, depart on a Tuesday or Monday 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 11 December 2025.

Tue 30/1216:00LHR - SAN
1 stop25h 19mDelta
Wed 14/122:04SAN - LHR
1 stop24h 46mDelta
Deal found 10/12£614
Wed 24/1217:50LHR - SAN
1 stop29h 55mLufthansa
Tue 6/109:55SAN - LHR
1 stop13h 30mLufthansa
Deal found 9/12£637
Wed 24/1217:50LHR - SAN
1 stop29h 55mLufthansa
Mon 5/117:40SAN - LHR
1 stop29h 45mLufthansa
Deal found 10/12£641
Tue 30/1216:00LHR - SAN
1 stop25h 19mDelta
Sat 17/106:30SAN - LHR
2 stops18h 50mDelta
Deal found 10/12£644
Wed 24/1213:30LHR - SAN
2 stops18h 45mUnited Airlines
Mon 5/121:30SAN - LHR
1 stop25h 10mUnited Airlines
Deal found 10/12£653
Thu 25/1206:35LHR - SAN
1 stop17h 10mLufthansa
Tue 6/112:11SAN - LHR
1 stop14h 04mLufthansa
Deal found 9/12£663
Thu 25/1208:45LHR - SAN
1 stop15h 00mMultiple Airlines
Tue 6/106:30SAN - LHR
2 stops20h 50mMultiple Airlines
Deal found 9/12£674
Wed 31/1217:20LHR - SAN
1 stop30h 13mDelta
Thu 15/107:05SAN - LHR
2 stops16h 45mDelta
Deal found 10/12£678
Tue 16/1209:20LHR - SAN
1 stop18h 01mJetBlue
Mon 26/115:30SAN - LHR
1 stop22h 10mJetBlue
Deal found 9/12£680
Wed 24/1214:30LHR - SAN
2 stops17h 45mAir Canada
Tue 6/107:00SAN - LHR
2 stops17h 30mAir Canada
Deal found 9/12£682
Thu 25/1209:30LHR - SAN
2 stops19h 17mUnited Airlines
Tue 6/111:08SAN - LHR
2 stops16h 52mUnited Airlines
Deal found 9/12£683

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 11 December 2025.

Round-trip from

£557

One-way from

£327

Popular in

July

Cheapest in

January

Average price

£740

Good round-trip deal

£574 or less

Good one-way deal

£548 or less
American Airlines
  • American Airlines
  • 26/1-9/2
  • 1 total stop
  • 25h 45m total
  • London to San Diego
Search Deals
13/1
  • 13/1
  • 2 total stops
  • 29h 50m total
  • London to San Diego
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£70 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 December 2025
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 11 December 2025.
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

Wed 11/2

07:25-19:50

1 stop20h 25m

San Diego

Fri 20/2

21:00-22:00

1 stop17h 00m

£571

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Fri 13/2

13:45-00:29

1 stop18h 44m

San Diego

Thu 19/2

07:00-07:55

1 stop16h 55m

£574

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 12/1

08:20-19:12

1 stop18h 52m

San Diego

Sun 1/2

18:00-12:35

Nonstop10h 35m

£574

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 12/2

10:05-20:49

1 stop18h 44m

San Diego

Mon 16/2

10:30-07:30

1 stop13h 00m

£574

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 12/2

13:45-00:29

1 stop18h 44m

San Diego

Wed 18/2

12:16-10:15

1 stop13h 59m

£574

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 21/1

12:50-16:10

Nonstop11h 20m

San Diego

Sun 25/1

16:00-13:15

1 stop13h 15m

£578

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Fri 13/3

06:30-18:21

2 stops18h 51m

San Diego

Tue 17/3

06:21-07:05

2 stops17h 44m

£578

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 12/2

11:45-23:02

2 stops19h 17m

San Diego

Tue 31/3

13:27-13:10

2 stops15h 43m

£578

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Sat 24/1

09:30-20:49

2 stops19h 19m

San Diego

Sat 31/1

22:40-20:35

1 stop13h 55m

£581

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Thu 12/2

09:30-20:49

2 stops19h 19m

San Diego

Fri 20/2

06:15-05:55

2 stops15h 40m

£581

Flights are sorted by cheapest return flights first.

Deals found on 11/12

Showing 1-10 of 22 results
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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 5 December 2025.

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 £341). Flying from London Heathrow Airport to San Diego in August is currently the most expensive (average of £416). 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 11 December 2025.

When flying from London Heathrow Airport to San Diego, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 16% versus a flight in the afternoon.

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 11 December 2025.
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
675 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.3

Entertainment

7.5

Food

6.9

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
675 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.3

Entertainment

7.5

Food

6.9

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
9,094 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.3

Entertainment

7.5

Food

6.9

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
3,045 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.3

Entertainment

7.5

Food

6.9

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
7,626 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.3

Entertainment

7.5

Food

6.9

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
7,573 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Boarding

7.7

Overall

7.5

Comfort

7.3

Entertainment

7.5

Food

6.9

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 12 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, United Airlines, and British Airways can get you from London Heathrow Airport to San Diego in just under 16h 38m. Your travel time can differ by up to 3h 47m. London Heathrow Airport and San Diego are separated by a distance of 5469 mi. This flight may include one or multiple stops.

  • 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 £389. Additional return tickets that might be worth considering are offered by Virgin Atlantic and Lufthansa, with the lowest prices starting at £403 and £406, 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 British Airways, with whom users have recently found tickets for as low as £415. However, be on the lookout for offers from Finnair and Lufthansa, 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 (62%), Alaska Airlines (62%) or British Airways (62%) 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 £383. While the most popular route (London Heathrow - San Diego) can be booked for £324 on average, our data indicates £2,013 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 £341). Flying from London Heathrow Airport to San Diego in August is currently the most expensive (average of £416). 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 11 December 2025.
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 11 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest£389Average£518FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Virgin AtlanticCheapest£403Average£518FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
LufthansaCheapest£406Average£491FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£412Average£574FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Air FranceCheapest£419Average£428FlexibilityNo cancel feeOn-time77%
Search Air France flights
United AirlinesCheapest£423Average£575FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
FinnairCheapest£426Average£553FlexibilityNo cancel feeOn-time76%
Search Finnair flights
KLMCheapest£428Average£562FlexibilityNo cancel feeOn-time75%
Search KLM flights
JetBlueCheapest£458Average£827FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
IberiaCheapest£479Average£613FlexibilityNo 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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