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$239+ Cheap flights from San Diego (SAN) to Heathrow (LHR)

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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LHR
feb. 20 — feb. 271
vie. 2/20
vie. 2/27
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from San Diego to London Heathrow are usually found in October or November, booked 34 days in advance, depart on a Wednesday or Monday and return on a Monday

Cheap flight deals from San Diego to Heathrow

Cheapest flights from San Diego to Heathrow
Explore the most affordable flight options available from San Diego to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 21, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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.
mié. 4/222:16 pm
SAN
-
LHR
1 stop13h 54m
British Airways
mié. 4/2911:35 am
LHR
-
SAN
Nonstop11h 20m
British Airways
Deal found 1/20$637
This United Airlines deal was found by Cheapflights users on 1/20. 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.
dom. 3/298:39 pm
SAN
-
LHR
1 stop29h 31m
United Airlines
jue. 4/163:00 pm
LHR
-
SAN
1 stop34h 24m
United Airlines
Deal found 1/20$638
This American Airlines deal was found by Cheapflights users on 1/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/152:18 pm
SAN
-
LHR
1 stop13h 57m
American Airlines
mar. 3/312:50 pm
LHR
-
SAN
Nonstop11h 20m
American Airlines
Deal found 1/21$639
This JetBlue deal was found by Cheapflights users on 1/20. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/159:10 pm
SAN
-
LHR
1 stop15h 35m
JetBlue
vie. 2/278:05 am
LHR
-
SAN
1 stop19h 55m
JetBlue
Deal found 1/20$640
This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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.
lun. 4/64:41 pm
SAN
-
LHR
1 stop13h 44m
British Airways
vie. 4/2411:35 am
LHR
-
SAN
Nonstop11h 20m
British Airways
Deal found 1/20$641
This Air Canada deal was found by Cheapflights users on 1/20. 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.
mar. 2/312:45 pm
SAN
-
LHR
1 stop15h 05m
Air Canada
mar. 2/101:25 pm
LHR
-
SAN
2 stops30h 28m
Air Canada
Deal found 1/20$642
This oojo deal was found by Cheapflights users on 1/20. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 9/21:08 pm
SAN
-
LHR
1 stop14h 07m
British Airways
mié. 9/162:30 pm
LHR
-
SAN
Nonstop11h 20m
British Airways
Deal found 1/20$643
This Booking.com deal was found by Cheapflights users on 1/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 10/137:40 pm
SAN
-
LHR
Nonstop10h 40m
Iberia
mié. 10/212:30 pm
LHR
-
SAN
Nonstop11h 20m
Iberia
Deal found 1/20$644
This United Airlines deal was found by Cheapflights users on 1/21. 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.
mié. 1/281:00 pm
SAN
-
LHR
1 stop12h 40m
United Airlines
jue. 2/511:35 am
LHR
-
SAN
1 stop13h 53m
United Airlines
Deal found 1/21$645
This British Airways deal was found by Cheapflights users on 1/20. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/57:40 pm
SAN
-
LHR
Nonstop10h 40m
British Airways
mié. 5/2011:35 am
LHR
-
SAN
Nonstop11h 20m
British Airways
Deal found 1/20$646
This British Airways deal was found by Cheapflights users on 1/21. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/264:45 pm
SAN
-
LHR
Nonstop10h 45m
British Airways
jue. 5/711:35 am
LHR
-
SAN
Nonstop11h 20m
British Airways
Deal found 1/21$647
This KAYAK deal was found by Cheapflights users on 1/21. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 1/284:00 pm
SAN
-
LHR
2 stops35h 15m
SWISS
mar. 2/39:00 am
LHR
-
SAN
2 stops19h 49m
SWISS
Deal found 1/21$648

Find flight deals from San Diego to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Heathrow (LHR). 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 enero 21, 2026.

Most accurate provider

oojo
3 stars

Most trusted provider

oojo
3 stars

Round-trip from

$637
(Cheapflightsfares)

One-way from

$239
(FlightHub)

Popular in

June

Cheapest in

October

Average price

$784

Good round-trip deal

$673 or less

Good one-way deal

$354 or less
Provider with most accurate pricing for San Diego-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-London Heathrow flights.
Search Deals
From San Diego to London Heathrow
Search Deals
One-way flight from San Diego to London Heathrow
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($313 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($45 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from San Diego to London Heathrow.
Search Deals
Price to beat on a one-way flight from San Diego to London Heathrow.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to Heathrow 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 enero 21, 2026.
Use the filters below to find and compare flights from San Diego to London Heathrow Airport that are best for you.

Fly from

San Diego

Fly to

Heathrow

Route

Depart

Return

Price

San DiegoLondon

SAN - LHR

SANLHR

San Diego

dom. 4/19

7:40 pm-2:20 pm

Nonstop10h 40m

London Heathrow

mar. 4/28

11:35 am-2:55 pm

Nonstop11h 20m

$646

San DiegoLondon

SAN - LHR

SANLHR

San Diego

lun. 5/11

9:05 am-6:50 am

1 stop13h 45m

London Heathrow

mar. 5/19

11:35 am-2:55 pm

Nonstop11h 20m

$651

San DiegoLondon

SAN - LHR

SANLHR

San Diego

mar. 3/24

3:40 pm-11:55 am

1 stop13h 15m

London Heathrow

lun. 3/30

11:45 am-11:50 am

1 stop32h 05m

$659

San DiegoLondon

SAN - LHR

SANLHR

San Diego

dom. 3/22

7:55 am-7:25 am

1 stop16h 30m

London Heathrow

mié. 4/1

4:15 pm-10:38 pm

1 stop14h 23m

$661

San DiegoLondon

SAN - LHR

SANLHR

San Diego

sáb. 2/7

4:10 pm-9:40 am

1 stop33h 30m

London Heathrow

sáb. 2/28

6:00 pm-11:53 am

1 stop25h 53m

$681

San DiegoLondon

SAN - LHR

SANLHR

San Diego

sáb. 2/28

7:50 pm-5:55 am

2 stops26h 05m

London Heathrow

sáb. 3/14

1:45 pm-12:14 am

1 stop17h 29m

$689

San DiegoLondon

SAN - LHR

SANLHR

San Diego

jue. 3/26

8:45 am-9:40 am

1 stop17h 55m

London Heathrow

mar. 3/31

11:25 am-5:16 pm

1 stop13h 51m

$695

San DiegoLondon

SAN - LHR

SANLHR

San Diego

dom. 4/19

4:45 pm-11:30 am

Nonstop10h 45m

London Heathrow

lun. 4/27

11:35 am-2:55 pm

Nonstop11h 20m

$696

San DiegoLondon

SAN - LHR

SANLHR

San Diego

vie. 5/1

4:45 pm-11:30 am

Nonstop10h 45m

London Heathrow

mié. 5/6

11:35 am-2:55 pm

Nonstop11h 20m

$697

San DiegoLondon

SAN - LHR

SANLHR

San Diego

jue. 4/16

1:26 pm-12:15 pm

1 stop14h 49m

London Heathrow

vie. 4/24

2:30 pm-5:50 pm

Nonstop11h 20m

$701

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/20

Showing 1-10 of 21 results
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Compare providers for flights from San Diego to Heathrow

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 San Diego to Heathrow in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
BudgetAirPrice Accuracy1 starTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 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 San Diego-London Heathrow Airport flights, users find the pricing of oojo to be most consistent on Cheapflights vs. oojo Users can find the same prices on San Diego-London Heathrow Airport flight deals on Cheapflights vs. oojo >95% of the time. Price accuracy is based on data collected from San Diego-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-London Heathrow Airport flights, Cheapflights users trust oojo the most. oojo 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 San Diego-London Heathrow Airport 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 San Diego to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Diego 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.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from San Diego to Heathrow. Price data was last updated on January 16, 2026.

The price you pay for your flight from San Diego to London Heathrow Airport may vary depending on when you book. For the best chance of a lower fare, look to book 34 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, December is the cheapest month in which you can book a flight from San Diego to London Heathrow Airport (average of $469). Flying from San Diego to London Heathrow Airport in June is currently the most expensive (average of $899). 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 SAN to LHR?

Find hourly flight availability from San Diego to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated enero 21, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Diego to London Heathrow Airport as you normally would.

The best insider tips for San Diego to London Heathrow Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Diego to London Heathrow Airport trip
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated enero 21, 2026.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from San Diego to London Heathrow Airport. 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.
Delta
7.9
Good
8,088 reviews

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
7.9
Good
8,088 reviews
Delta
7.9
Good
8,088 reviews

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
9,191 reviews
Delta
7.9
Good
8,088 reviews

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
11,173 reviews
Delta
7.9
Good
8,088 reviews

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Iberia
7.0
Good
3,094 reviews
Delta
7.9
Good
8,088 reviews

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
British Airways
6.7
Okay
7,689 reviews
Delta
7.9
Good
8,088 reviews

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Heathrow. 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 from for flights from San Diego to London Heathrow?

    Most people fly from San Diego (SAN) if they book a flight from San Diego to London Heathrow. On average, San Diego has 6 outbound flights to London Heathrow per day from 10 airlines. San Diego is conveniently located just 2.6 mi from San Diego’s city center.

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

    British Airways, Delta, and United Airlines can get you from San Diego to London Heathrow Airport in just under 10h 40m. Your travel time can differ by up to 5h 50m. There are 5469 mi between San Diego and London Heathrow Airport. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    JetBlue, at $181, was found to be the cheapest airline from San Diego to London Heathrow Airport.Alternate airlines to your destination round-trip include Delta and Finnair. JetBlue is priced at 79% lower than the current average price of a flight leaving 3 months from now.

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

    One-way options have recently been found by users for as low as $179 on JetBlue. Other airlines that offer cheap prices include Iberia from $379 and British Airways from $381 one-way.

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

    The top 3 most reliable airlines when flying from San Diego to London Heathrow Airport are American Airlines (56%), Alaska Airlines (56%) and Aer Lingus (56%).

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

    The cheapest flight price from San Diego to London Heathrow Airport is $253. On average you can expect to pay $2,279. The most popular route, (San Diego - London Heathrow), can usually be booked for $580.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Diego to Heathrow 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 San Diego to London Heathrow Airport?

    Currently, December is the cheapest month in which you can book a flight from San Diego to London Heathrow Airport (average of $469). Flying from San Diego to London Heathrow Airport in June is currently the most expensive (average of $899). 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
Ilford
Hounslow
Southend-on-Sea
Harrow
Croydon
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Diego to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from San Diego to Heathrow

Discover the top 10 airlines that operate flights from San Diego to Heathrow. 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 enero 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$181Average$1,087FlexibilityNo cancel feeOn-time62%
DeltaCheapest$552Average$874FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$556Average$844FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$567Average$768FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$575Average$838FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$578Average$706FlexibilityNo cancel feeOn-time77%
IberiaCheapest$587Average$908FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$593Average$932FlexibilityNo cancel feeOn-time71%
Virgin AtlanticCheapest$620Average$742FlexibilityNo cancel feeOn-time72%
LufthansaCheapest$620Average$888FlexibilityNo cancel feeOn-time76%

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