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$543+ Cheap flights from Heathrow (LHR) to San Diego (SAN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SAN
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
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The best prices from London Heathrow to San Diego are usually found in January or February, booked 53 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

Cheap 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 January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$551
(TravelUp)

Popular in

August

Cheapest in

January

Average price

$615

Good round-trip deal

$586 or less

Good one-way deal

$612 or less
Provider with most accurate pricing for London Heathrow-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Heathrow-San Diego flights.
Search Deals
From London Heathrow to San Diego
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($142 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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.
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Find flight deals from Heathrow to San Diego

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 January 30, 2025.

This Air Canada deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/188:55 amLHR - SAN
2 stops35h 08mAir Canada
Tue 2/254:00 pmSAN - LHR
2 stops31h 10mAir Canada
Deal found 1/28$543
This TravelUp deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/266:35 amLHR - SAN
1 stop16h 50mLufthansa
Wed 3/51:00 pmSAN - LHR
1 stop12h 40mLufthansa
Deal found 1/29$551
This Cheapflightsfares deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:50 pmLHR - SAN
Nonstop11h 15mBritish Airways
Mon 11/173:00 pmSAN - LHR
1 stop13h 05mBritish Airways
Deal found 1/28$558
This Cheapflightsfares deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:50 pmLHR - SAN
Nonstop11h 15mIberia
Mon 11/176:10 pmSAN - LHR
Nonstop10h 25mIberia
Deal found 1/28$568
This Air Canada deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/106:30 amLHR - SAN
2 stops19h 20mMultiple Airlines
Mon 3/177:30 pmSAN - LHR
1 stop31h 40mMultiple Airlines
Deal found 1/29$573
This SWISS deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/246:00 amLHR - SAN
2 stops23h 59mSWISS
Tue 4/81:43 pmSAN - LHR
2 stops20h 07mSWISS
Deal found 1/30$587
This United Airlines deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/247:25 amLHR - SAN
1 stop16h 00mUnited Airlines
Thu 10/210:23 amSAN - LHR
2 stops37h 17mUnited Airlines
Deal found 1/30$591
This Kiwi.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/102:30 pmLHR - SAN
1 stop39h 38mFinnair
Mon 3/177:10 pmSAN - LHR
Nonstop10h 25mFinnair
Deal found 1/29$604
This Kiwi.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/124:20 pmLHR - SAN
1 stop36h 39mAustrian Airlines
Sat 2/228:00 amSAN - LHR
1 stop14h 40mAustrian Airlines
Deal found 1/29$628
This Kiwi.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/121:35 pmLHR - SAN
1 stop37h 25mBrussels Airlines
Wed 2/1911:10 amSAN - LHR
1 stop12h 45mBrussels Airlines
Deal found 1/29$644
This TravelUp deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/310:00 amLHR - SAN
2 stops22h 28mVirgin Atlantic
Thu 4/106:15 pmSAN - LHR
1 stop13h 25mVirgin Atlantic
Deal found 1/29$653
This Delta deal was found by Cheapflights users on 1/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/68:40 amLHR - SAN
2 stops20h 26mDelta
Sat 2/156:15 amSAN - LHR
1 stop16h 05mDelta
Deal found 1/30$675

Find flights from Heathrow to San Diego within your budget

Customize 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 2,558,603 searches. Data last updated January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 2/18

8:55 am-12:03 pm

2 stops35h 08m

San Diego

Tue 2/25

4:00 pm-7:10 am

2 stops31h 10m

$543

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 2/26

6:35 am-3:25 pm

1 stop16h 50m

San Diego

Wed 3/5

1:00 pm-9:40 am

1 stop12h 40m

$551

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 2/18

12:50 pm-4:05 pm

Nonstop11h 15m

San Diego

Tue 2/25

2:45 pm-12:05 pm

1 stop13h 20m

$567

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 3/10

6:30 am-6:50 pm

2 stops19h 20m

San Diego

Mon 3/17

7:30 pm-7:10 am

2 stops28h 40m

$573

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 2/25

12:50 pm-4:05 pm

Nonstop11h 15m

San Diego

Tue 3/4

6:10 pm-12:35 pm

Nonstop10h 25m

$578

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 3/24

6:00 am-10:59 pm

2 stops23h 59m

San Diego

Tue 4/8

1:43 pm-5:50 pm

2 stops20h 07m

$587

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Mon 3/10

2:30 pm-11:08 pm

1 stop39h 38m

San Diego

Mon 3/17

7:10 pm-12:35 pm

Nonstop10h 25m

$604

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Tue 4/22

7:25 am-3:25 pm

1 stop16h 00m

San Diego

Fri 5/2

8:50 am-10:40 am

2 stops17h 50m

$623

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 2/12

4:20 pm-8:59 pm

1 stop36h 39m

San Diego

Sat 2/22

8:00 am-6:40 am

1 stop14h 40m

$628

LondonSan Diego

LHR - SAN

LHRSAN

London Heathrow

Wed 2/12

1:35 pm-7:00 pm

1 stop37h 25m

San Diego

Wed 2/19

11:10 am-7:55 am

1 stop12h 45m

$644

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 26 results
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Compare providers for flights from Heathrow to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to San Diego in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
StudentUniversePrice Accuracy3 starsTrust Score*3 stars
JetabroadPrice Accuracy3 starsTrust Score*3 stars
Thrive TravelPrice Accuracy3 starsTrust Score*2 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London Heathrow Airport-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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.

Travel insights for flights from Heathrow to San Diego

Get recent, data-driven insights about flights from Heathrow to San Diego including ideal travel times, pricing trends, and more.

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 round-trip flight from Heathrow to San Diego. Price data was last updated on January 24, 2025.

Booking 53 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, August is the cheapest month in which you can book a flight from London Heathrow Airport to San Diego (average of $286). Flying from London Heathrow Airport to San Diego in March is currently the most expensive (average of $366). 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 January 30, 2025.

One of the essential ways to save on airfare from London Heathrow Airport to San Diego is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 10% on airfare.

Weekly flight availability from London Heathrow Airport to San Diego

Explore weekly flight availability from Heathrow to San Diego. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated January 30, 2025.

The most flights from LHR to SAN are scheduled on a Monday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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 January 30, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair from London to San Diego to help guide your decision. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,450 reviews

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,450 reviews
Delta
8.0
Very good
8,450 reviews

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,335 reviews
Delta
8.0
Very good
8,450 reviews

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,285 reviews
Delta
8.0
Very good
8,450 reviews

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines
7.5
Good
786 reviews
Delta
8.0
Very good
8,450 reviews

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,584 reviews
Delta
8.0
Very good
8,450 reviews

Entertainment

7.9

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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?

    Located just 2.6 mi from the city center, San Diego is the airport most travelers will use when flying to San Diego from London Heathrow. Booking flights from London Heathrow to San Diego (SAN) should be relatively easy as there are 6 daily inbound flights from London Heathrow from 4 different airlines.

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

    Our cheapest airline available from London Heathrow Airport to San Diego is United Airlines. Our recent data shows that you can find tickets from as low as $583 on this airline. Additional options worth looking into are SWISS and Air Canada, starting at $587 and $588 round-trip. United Airlines is currently priced 23% below the average price you’ll pay for this route.

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

    The cheapest airline one-way is WestJet, with whom users have recently found tickets for as low as $563. However, be on the lookout for offers from Lufthansa and Finnair, 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?

    The top 3 most reliable airlines when flying from London Heathrow Airport to San Diego are American Airlines (69%), Alaska Airlines (69%) and Aer Lingus (69%).

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

    Looking for the cheapest flight from London Heathrow Airport to San Diego? While on average our users pay $1,323, our data indicates the cheapest price to be $539. The most popular route (London Heathrow - San Diego), is priced around $520.

  • 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 vacation 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, August is the cheapest month in which you can book a flight from London Heathrow Airport to San Diego (average of $286). Flying from London Heathrow Airport to San Diego in March is currently the most expensive (average of $366). 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

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
El Cajon
Chula Vista
Lemon Grove
National City
Imperial Beach
La Mesa
Alpine
Poway
Santee
Coronado
Borrego Springs

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Alternative routes for Heathrow to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Heathrow to San Diego

Discover the top 4 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 2,558,603 searches. Data last updated January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$513Average$671FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$539Average$756FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$563Average$748FlexibilityNo cancel feeOn-time71%
IberiaCheapest$576Average$744FlexibilityNo cancel feeOn-time77%
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