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$397+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LHR
Apr 15 — Apr 221
Wed 4/15
Wed 4/22
1 adult, Economy
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Find cheap flights from San Diego to Heathrow with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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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 Tuesday and return on a Tuesday

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 March 16, 2026.

This eDestinos deal was found by Cheapflights users on 3/15. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/110:10 pm
SAN
-
LHR
1 stop14h 00m
Virgin Atlantic
Tue 9/82:30 pm
LHR
-
SAN
1 stop16h 25m
Virgin Atlantic
Deal found 3/15$716
This eDestinos deal was found by Cheapflights users on 3/15. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/17:40 pm
SAN
-
LHR
Nonstop10h 40m
British Airways
Tue 9/811:35 am
LHR
-
SAN
Nonstop11h 20m
British Airways
Deal found 3/15$719
This Mytrip deal was found by Cheapflights users on 3/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1012:30 pm
SAN
-
LHR
1 stop34h 05m
Multiple Airlines
Thu 8/206:55 am
LHR
-
SAN
1 stop16h 30m
Multiple Airlines
Deal found 3/10$721
This eDestinos deal was found by Cheapflights users on 3/13. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/177:40 pm
SAN
-
LHR
Nonstop10h 40m
British Airways
Wed 8/2611:35 am
LHR
-
SAN
Nonstop11h 20m
British Airways
Deal found 3/13$724
This Mytrip deal was found by Cheapflights users on 3/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/178:20 am
SAN
-
LHR
2 stops38h 10m
Multiple Airlines
Wed 8/266:55 am
LHR
-
SAN
1 stop16h 30m
Multiple Airlines
Deal found 3/13$726
This FlightHub deal was found by Cheapflights users on 3/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:05 am
SAN
-
LHR
2 stops22h 35m
Scandinavian Airlines
Thu 10/227:05 am
LHR
-
SAN
2 stops24h 40m
Scandinavian Airlines
Deal found 3/14$727
This FlightHub deal was found by Cheapflights users on 3/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:59 pm
SAN
-
LHR
2 stops17h 41m
Scandinavian Airlines
Tue 9/2210:20 am
LHR
-
SAN
2 stops20h 35m
Scandinavian Airlines
Deal found 3/13$728
This Finnair deal was found by Cheapflights users on 3/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/79:12 am
SAN
-
LHR
1 stop14h 53m
Finnair
Thu 4/2310:05 am
LHR
-
SAN
1 stop16h 00m
Finnair
Deal found 3/10$731
This The Travel House deal was found by Cheapflights users on 3/14. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1710:00 am
SAN
-
LHR
2 stops46h 00m
Scandinavian Airlines
Wed 8/265:30 pm
LHR
-
SAN
2 stops35h 18m
Scandinavian Airlines
Deal found 3/14$732
This eDestinos deal was found by Cheapflights users on 3/11. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/312:09 pm
SAN
-
LHR
1 stop15h 06m
Virgin Atlantic
Tue 4/73:15 pm
LHR
-
SAN
1 stop15h 54m
Virgin Atlantic
Deal found 3/11$733
This eDestinos deal was found by Cheapflights users on 3/13. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2811:40 am
SAN
-
LHR
1 stop14h 05m
Virgin Atlantic
Sat 11/76:30 am
LHR
-
SAN
1 stop13h 35m
Virgin Atlantic
Deal found 3/13$735
This eDestinos deal was found by Cheapflights users on 3/11. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/119:05 am
SAN
-
LHR
1 stop13h 45m
British Airways
Tue 5/1911:35 am
LHR
-
SAN
Nonstop11h 20m
British Airways
Deal found 3/11$736

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 March 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$716
(eDestinos)

One-way from

$397
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$857

Good round-trip deal

$774 or less

Good one-way deal

$421 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 ($302 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 March 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 March 16, 2026.
Use the filters below to find and compare flights from San Diego to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sun 4/26

10:05 am-6:30 pm

2 stops24h 25m

London Heathrow

Tue 5/12

7:05 am-11:15 pm

3 stops24h 10m

$769
Quickest round-trip

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sun 4/26

7:45 pm-5:35 pm

1 stop13h 50m

London Heathrow

Tue 5/12

6:30 am-11:50 am

1 stop13h 20m

$790

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 4/29

7:20 am-5:55 am

1 stop14h 35m

London Heathrow

Mon 5/4

10:50 am-3:25 pm

1 stop36h 35m

$804

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Tue 4/7

9:50 am-1:05 pm

2 stops19h 15m

London Heathrow

Thu 4/23

6:30 am-2:50 pm

2 stops16h 20m

$809

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 3/25

6:15 am-7:05 am

2 stops17h 50m

London Heathrow

Fri 4/3

9:55 am-11:14 pm

1 stop21h 19m

$838

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Fri 4/24

12:45 pm-1:20 pm

1 stop16h 35m

London Heathrow

Tue 5/5

6:55 am-3:25 pm

1 stop16h 30m

$839

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Thu 4/2

9:00 am-8:05 am

1 stop15h 05m

London Heathrow

Mon 4/6

8:55 am-6:23 pm

1 stop17h 28m

$883

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Fri 4/24

6:15 am-10:00 am

1 stop19h 45m

London Heathrow

Sun 5/10

6:30 am-2:57 pm

2 stops16h 27m

$904

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Fri 3/27

8:50 pm-11:25 am

2 stops31h 35m

London Heathrow

Sun 4/5

2:50 pm-9:54 am

2 stops27h 04m

$937

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Thu 3/26

6:15 am-7:05 am

1 stop17h 50m

London Heathrow

Sat 4/4

10:45 am-11:14 pm

2 stops20h 29m

$938

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
BudgetAirPrice Accuracy1 starTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >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 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 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 March 13, 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 $936). 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 March 16, 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.

How much does it cost to fly round-trip from San Diego to London Heathrow Airport?

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 March 16, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican 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
8,292 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Overall

7.9

Crew

8.5

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
8,292 reviews
Delta
7.9
Good
8,292 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Overall

7.9

Crew

8.5

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
9,427 reviews
Delta
7.9
Good
8,292 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Overall

7.9

Crew

8.5

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
7.1
Good
11,466 reviews
Delta
7.9
Good
8,292 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Overall

7.9

Crew

8.5

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
3,136 reviews
Delta
7.9
Good
8,292 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Overall

7.9

Crew

8.5

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
7,794 reviews
Delta
7.9
Good
8,292 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Food

7.2

Overall

7.9

Crew

8.5

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 9 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?

    Scandinavian Airlines, Delta, and United Airlines can get you from San Diego to London Heathrow Airport in just under 13h 50m. Your travel time can differ by up to 10h 35m. 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 Iberia. 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 WestJet from $361 and British Airways from $376 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 (78%), Alaska Airlines (78%) and Aer Lingus (78%).

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

    The cheapest flight price from San Diego to London Heathrow Airport is $271. On average you can expect to pay $2,448. The most popular route, (San Diego - London Heathrow), can usually be booked for $655.

  • 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 $936). 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
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Borehamwood
Broadway
Aylesbury
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 9 airlines flying from San Diego to Heathrow

Discover the top 9 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 March 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$181Average$1,178FlexibilityNo cancel feeOn-time62%
DeltaCheapest$552Average$944FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$560Average$884FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$567Average$855FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$574Average$814FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$578Average$706FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$603Average$942FlexibilityNo cancel feeOn-time71%
Virgin AtlanticCheapest$620Average$685FlexibilityNo cancel feeOn-time72%
LufthansaCheapest$621Average$847FlexibilityNo cancel feeOn-time76%

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