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$527+ Cheap flights from Heathrow (LHR) to San Francisco (SFO)

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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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The best prices from London Heathrow to San Francisco are usually found in February or November, booked 82 days in advance, depart on a Thursday or Wednesday and return on a Tuesday

Cheap flight deals from Heathrow to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to San Francisco (SFO). 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 December 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$527
(Voliamo)

Popular in

July

Cheapest in

February

Average price

$791
Provider with most accurate pricing for London Heathrow-San Francisco flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-San Francisco flights.
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From London Heathrow to San Francisco
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High demand for flights, 19% potential price rise
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Best time to find cheap flights, 3% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from Heathrow to San Francisco

Cheapest flights from Heathrow to San Francisco
Explore the most affordable flight options available from Heathrow to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This The Travel House deal was found by Cheapflights users on 12/18. 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.
Sat 12/281:50 pmLHR - SFO
1 stop17h 09mFinnair
Sun 1/1210:53 pmSFO - LHR
1 stop15h 17mFinnair
Deal found 12/18$594
This Delta deal was found by Cheapflights users on 12/18. 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 12/266:30 amLHR - SFO
1 stop13h 20mDelta
Tue 1/144:40 pmSFO - LHR
Nonstop10h 15mDelta
Deal found 12/18$598
This World Air Fares deal was found by Cheapflights users on 12/17. 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 World Air Fares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2810:30 amLHR - SFO
1 stop17h 35mLufthansa
Sun 1/123:20 pmSFO - LHR
1 stop14h 10mLufthansa
Deal found 12/17$604
This Iberia deal was found by Cheapflights users on 12/18. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2812:10 pmLHR - SFO
1 stop17h 01mIberia
Thu 1/165:30 pmSFO - LHR
Nonstop10h 30mIberia
Deal found 12/18$616
This British Airways deal was found by Cheapflights users on 12/18. 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.
Fri 12/273:20 pmLHR - SFO
Nonstop11h 25mBritish Airways
Tue 1/145:30 pmSFO - LHR
Nonstop10h 30mBritish Airways
Deal found 12/18$660
This lastminute.com deal was found by Cheapflights users on 12/17. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2810:45 amLHR - SFO
1 stop15h 37mVirgin Atlantic
Thu 2/207:10 amSFO - LHR
1 stop15h 10mVirgin Atlantic
Deal found 12/17$662
This Cheapflightsfares deal was found by Cheapflights users on 12/18. 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.
Fri 12/2710:05 amLHR - SFO
Nonstop11h 10mMultiple Airlines
Fri 1/107:25 pmSFO - LHR
1 stop14h 25mMultiple Airlines
Deal found 12/18$667
This Expedia deal was found by Cheapflights users on 12/17. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2511:40 amLHR - SFO
Nonstop11h 05mAir France
Tue 12/314:40 pmSFO - LHR
Nonstop10h 15mAir France
Deal found 12/17$674
This Air Canada deal was found by Cheapflights users on 12/17. 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 12/241:00 pmLHR - SFO
1 stop15h 11mAir Canada
Tue 1/141:00 pmSFO - LHR
1 stop13h 10mAir Canada
Deal found 12/17$675
This TravelUp deal was found by Cheapflights users on 12/17. 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 12/255:50 pmLHR - SFO
1 stop26h 00mKLM
Tue 12/314:40 pmSFO - LHR
Nonstop10h 15mKLM
Deal found 12/17$678
This United Airlines deal was found by Cheapflights users on 12/18. 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.
Fri 12/276:00 pmLHR - SFO
1 stop35h 42mUnited Airlines
Fri 1/108:25 amSFO - LHR
1 stop14h 15mUnited Airlines
Deal found 12/18$684
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/253:20 pmLHR - SFO
Nonstop11h 25mAmerican Airlines
Tue 12/318:40 pmSFO - LHR
Nonstop10h 35mAmerican Airlines
Deal found 12/17$714

Find flights from Heathrow to San Francisco within your budget

Customize your flight search to find flights from Heathrow to San Francisco 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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 2/14

6:40 am-3:40 pm

1 stop17h 00m

San Francisco

Sun 2/23

5:30 pm-9:40 pm

1 stop20h 10m

$527

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 1/25

6:00 am-2:55 pm

1 stop16h 55m

San Francisco

Fri 1/31

7:15 pm-6:55 pm

1 stop15h 40m

$536

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 2/11

11:10 am-6:45 pm

1 stop15h 35m

San Francisco

Thu 2/27

5:25 pm-12:00 pm

Nonstop10h 35m

$540

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 1/15

6:00 am-4:25 pm

1 stop18h 25m

San Francisco

Mon 1/20

5:25 pm-12:00 pm

Nonstop10h 35m

$570

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 1/16

6:30 am-11:50 am

1 stop13h 20m

San Francisco

Fri 5/2

4:05 pm-10:25 am

Nonstop10h 20m

$591

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 2/10

8:55 am-4:25 pm

1 stop15h 30m

San Francisco

Tue 2/25

8:26 am-6:40 am

1 stop14h 14m

$594

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 1/16

3:05 pm-6:30 pm

Nonstop11h 25m

San Francisco

Thu 1/23

5:30 pm-12:00 pm

Nonstop10h 30m

$606

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 1/16

11:40 am-2:45 pm

Nonstop11h 05m

San Francisco

Thu 1/23

4:40 pm-10:55 am

Nonstop10h 15m

$607

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 3/20

6:30 am-12:50 pm

1 stop13h 20m

San Francisco

Mon 3/24

5:40 pm-10:55 am

Nonstop10h 15m

$608

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 1/9

10:15 am-10:16 pm

1 stop20h 01m

San Francisco

Sun 2/23

11:35 pm-8:35 am

2 stops25h 00m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 32 results
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Compare providers for flights from Heathrow to San Francisco

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 Francisco in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
OvagoPrice Accuracy1 starTrust Score*3 stars
KAYAKPrice Accuracy1 starTrust Score*3 stars
oojoPrice 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 London Heathrow Airport-San Francisco 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 Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-San Francisco 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 Francisco 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 Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco 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 Francisco

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

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

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to San Francisco. Price data was last updated on December 13, 2024.

The price you pay for your flight from London Heathrow Airport to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 82 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 London Heathrow Airport to San Francisco?

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to San Francisco (average of $276). Flying from London Heathrow Airport to San Francisco in June is currently the most expensive (average of $381). 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 SFO?

Find hourly flight availability from Heathrow to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

When flying from London Heathrow Airport to San Francisco, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 10% versus a flight in the afternoon.

Weekly flight availability from London Heathrow Airport to San Francisco

Explore weekly flight availability from Heathrow to San Francisco. 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 December 18, 2024.

The most flights from LHR to SFO are scheduled on a Monday (33 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (33 on average).

Rainfall in San Francisco by month

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

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

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

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September 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 51.8 F).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 Francisco. Reviews last updated December 18, 2024.
Get a feel of what it's like to fly with Lufthansa, Virgin Atlantic and United Airlines from London to San Francisco by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,604 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

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

Delta
8.0
Very good
8,604 reviews
Delta
8.0
Very good
8,604 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

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

Air New Zealand
8.0
Very good
496 reviews
Delta
8.0
Very good
8,604 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

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

KLM
7.8
Good
1,349 reviews
Delta
8.0
Very good
8,604 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

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

Finnair
7.7
Good
1,285 reviews
Delta
8.0
Very good
8,604 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

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

Austrian Airlines
7.6
Good
787 reviews
Delta
8.0
Very good
8,604 reviews

Food

7.3

Overall

8.0

Comfort

7.9

Entertainment

7.9

Crew

8.6

Boarding

8.2

Reviews

1 / 10

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 Francisco. 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 Francisco from London Heathrow?

    Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from London Heathrow. Booking flights from London Heathrow to San Francisco (SFO) should be relatively easy as there are 33 daily inbound flights from London Heathrow from 11 different airlines.

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

    According to our current data, Scandinavian Airlines ($527), TAP AIR PORTUGAL ($536), and Lufthansa ($540) offers the cheapest pricing from London Heathrow Airport to San Francisco. Scandinavian Airlines is priced at 21% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $539. Virgin Atlantic flights start at $567 while deals on SWISS start at $595 one-way.

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

    The top 3 most reliable airlines when flying from London Heathrow Airport to San Francisco are Iberia (73%), Air Canada (71%) and Austrian Airlines (71%).

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

    While on average a flight from London Heathrow Airport to San Francisco is generally $1,507, our data shows the cheapest flight currently is $601. When looking at the most popular route, (London Heathrow - San Francisco), you can expect to pay $479 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow to San Francisco 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 Francisco?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to San Francisco (average of $276). Flying from London Heathrow Airport to San Francisco in June is currently the most expensive (average of $381). 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

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Alternative routes for Heathrow to San Francisco

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

Discover the top 10 airlines that operate flights from Heathrow to San Francisco. 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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$415Average$643FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$476Average$662FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$507Average$661FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$515Average$650FlexibilityNo cancel feeOn-time70%
DeltaCheapest$519Average$780FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$526Average$750FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$545Average$729FlexibilityNo cancel feeOn-time71%
Brussels AirlinesCheapest$546Average$633FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$549Average$719FlexibilityNo cancel feeOn-time69%
IberiaCheapest$602Average$736FlexibilityNo cancel feeOn-time77%
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