Heathrow

$312+ 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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — LHR
Mar 1 — Mar 81
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Find cheap flights from San Diego to Heathrow with Cheapflights

1. Tell us where you want to go
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The best prices from San Diego to London Heathrow are usually found in January or October, booked 51 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap 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 February 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$634
(American Airlines)

One-way from

$312
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$781

Good round-trip deal

$772 or less

Good one-way deal

$598 or less
Provider with most accurate pricing for San Diego-London Heathrow flight deals.
Provider most trusted by Cheapflights users for San Diego-London Heathrow flights.
From San Diego to London Heathrow
One-way flight from San Diego to London Heathrow
Highest demand for flights based on searches. 21% potential increase in price ($250 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
Average for round-trip flights in February 2025
Price to beat on a round-trip flight from San Diego to London Heathrow.
Price to beat on a one-way flight from San Diego to London Heathrow.

Find 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 February 24, 2025.

This American Airlines deal was found by Cheapflights users on 2/23. 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.
Sun 5/184:31 pmSAN - LHR
1 stop14h 09mAmerican Airlines
Thu 1/1512:50 pmLHR - SAN
Nonstop11h 15mAmerican Airlines
Deal found 2/23$634
This Gotogate deal was found by Cheapflights users on 2/24. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/1712:40 pmSAN - LHR
2 stops35h 30mMultiple Airlines
Mon 3/315:50 pmLHR - SAN
1 stop29h 35mMultiple Airlines
Deal found 2/24$636
This Cheapflightsfares deal was found by Cheapflights users on 2/23. 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.
Wed 9/247:50 pmSAN - LHR
Nonstop10h 30mIberia
Wed 10/222:55 pmLHR - SAN
Nonstop11h 05mIberia
Deal found 2/23$638
This Gotogate deal was found by Cheapflights users on 2/23. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/912:40 pmSAN - LHR
1 stop34h 50mAir Canada
Tue 3/256:00 pmLHR - SAN
1 stop25h 03mAir Canada
Deal found 2/23$641
This United Airlines deal was found by Cheapflights users on 2/22. 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.
Sun 3/911:45 amSAN - LHR
1 stop15h 25mUnited Airlines
Wed 3/198:45 amLHR - SAN
1 stop14h 40mUnited Airlines
Deal found 2/22$647
This CheapOair deal was found by Cheapflights users on 2/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/307:50 pmSAN - LHR
Nonstop10h 30mBritish Airways
Wed 5/72:55 pmLHR - SAN
Nonstop11h 05mBritish Airways
Deal found 2/23$652
This Finnair deal was found by Cheapflights users on 2/24. 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.
Mon 3/107:10 pmSAN - LHR
Nonstop10h 25mFinnair
Tue 3/2512:50 pmLHR - SAN
Nonstop11h 15mFinnair
Deal found 2/24$653
This Delta deal was found by Cheapflights users on 2/24. 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.
Mon 3/106:20 amSAN - LHR
2 stops17h 45mDelta
Tue 3/256:30 amLHR - SAN
2 stops18h 36mDelta
Deal found 2/24$660
This Scandinavian Airlines deal was found by Cheapflights users on 2/24. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/317:15 amSAN - LHR
2 stops18h 20mScandinavian Airlines
Mon 4/77:05 amLHR - SAN
2 stops24h 42mScandinavian Airlines
Deal found 2/24$666
This Aeromexico deal was found by Cheapflights users on 2/22. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/77:00 amSAN - LHR
1 stop19h 15mAir France
Mon 7/216:15 amLHR - SAN
2 stops26h 02mAir France
Deal found 2/22$667
This Lufthansa deal was found by Cheapflights users on 2/23. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/155:15 pmSAN - LHR
1 stop19h 30mLufthansa
Wed 4/236:55 amLHR - SAN
1 stop16h 30mLufthansa
Deal found 2/23$670
This JetBlue deal was found by Cheapflights users on 2/22. 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.
Fri 2/289:37 pmSAN - LHR
1 stop15h 08mJetBlue
Tue 3/47:25 amLHR - SAN
1 stop21h 02mJetBlue
Deal found 2/22$736

Find flights from San Diego to Heathrow within your budget

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 February 24, 2025.

Fly from

San Diego

Fly to

Heathrow

Route

Depart

Return

Price

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sun 5/18

4:31 pm-2:40 pm

1 stop14h 09m

London Heathrow

Thu 1/15

12:50 pm-4:05 pm

Nonstop11h 15m

$634

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 3/17

12:40 pm-7:10 am

2 stops35h 30m

London Heathrow

Mon 3/31

5:50 pm-3:25 pm

1 stop29h 35m

$636

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 3/10

12:55 pm-11:50 am

1 stop15h 55m

London Heathrow

Tue 3/25

3:00 pm-12:03 pm

2 stops28h 03m

$638

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 4/30

3:04 pm-12:15 pm

1 stop13h 11m

London Heathrow

Thu 5/8

2:55 pm-6:00 pm

Nonstop11h 05m

$639

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Sun 3/9

11:45 am-10:10 am

1 stop15h 25m

London Heathrow

Wed 3/19

8:45 am-4:25 pm

1 stop14h 40m

$647

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Wed 4/30

7:50 pm-2:20 pm

Nonstop10h 30m

London Heathrow

Wed 5/7

2:55 pm-6:00 pm

Nonstop11h 05m

$652

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 3/10

7:10 pm-12:35 pm

Nonstop10h 25m

London Heathrow

Tue 3/25

12:50 pm-5:05 pm

Nonstop11h 15m

$653

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 3/10

6:20 am-7:05 am

2 stops17h 45m

London Heathrow

Tue 3/25

6:30 am-6:06 pm

2 stops18h 36m

$660

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 3/31

7:15 am-9:35 am

2 stops18h 20m

London Heathrow

Mon 4/7

7:05 am-11:47 pm

2 stops24h 42m

$666

San DiegoLondon

SAN - LHR

SANLHR

San Diego

Mon 7/7

7:00 am-10:15 am

1 stop19h 15m

London Heathrow

Thu 7/31

6:15 am-12:17 am

2 stops26h 02m

$667

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/24

Showing 1-10 of 26 results
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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy1 starTrust 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 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.

Travel insights for flights from San Diego to Heathrow

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

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 February 14, 2025.

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 51 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, November is the cheapest month in which you can book a flight from San Diego to London Heathrow Airport (average of $661). Flying from San Diego to London Heathrow Airport in June is currently the most expensive (average of $1,136). 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 February 24, 2025.

A simple way to save on the total cost of your ticket is to fly from San Diego to London Heathrow Airport at noon. If you’re flexible enough to do this you can expect to save up to 9% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from San Diego to London Heathrow Airport?

Use this chart to determine the cheapest time to fly round-trip from San Diego to Heathrow. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Diego to London Heathrow Airport flight should consider departing on Wednesday at noon when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Diego to London Heathrow Airport

Explore weekly flight availability from San Diego to Heathrow. 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 February 24, 2025.

The most flights from SAN to LHR 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 Heathrow by month

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

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

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

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 February 24, 2025.
See what other customers who have flown with Delta, KLM and Finnair from San Diego to London have to say. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

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.

8.0
Very good
8.0
Very good

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

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.

8.0
Very good

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

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.

8.0
Very good

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

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.

8.0
Very good

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

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.

8.0
Very good

Comfort

8.0

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.3

Entertainment

7.9

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 11 airlines. San Diego is conveniently located just 2.6 mi from San Diego’s city center.

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

    American Airlines, at $634, was found to be the cheapest airline from San Diego to London Heathrow Airport.Alternate airlines to your destination round-trip include Air Canada and Iberia. American Airlines is priced at 30% 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 $324 on JetBlue. Other airlines that offer cheap prices include WestJet from $411 and British Airways from $427 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 (68%), Alaska Airlines (68%) and Aer Lingus (68%).

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

    The cheapest flight price from San Diego to London Heathrow Airport is $453. On average you can expect to pay $4,165. The most popular route, (San Diego - London Heathrow), can usually be booked for $589.

  • 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, November is the cheapest month in which you can book a flight from San Diego to London Heathrow Airport (average of $661). Flying from San Diego to London Heathrow Airport in June is currently the most expensive (average of $1,136). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
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Wembley
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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.

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 February 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$590Average$942FlexibilityNo cancel feeOn-time76%
FinnairCheapest$595Average$690FlexibilityNo cancel feeOn-time76%
JetBlueCheapest$597Average$921FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$602Average$913FlexibilityNo cancel feeOn-time69%
IberiaCheapest$603Average$797FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$608Average$942FlexibilityNo cancel feeOn-time67%
Virgin AtlanticCheapest$623Average$890FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$653Average$965FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$654Average$971FlexibilityNo cancel feeOn-time70%
DeltaCheapest$710Average$980FlexibilityNo cancel feeOn-timeN/A
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