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$502+ Cheap flights from Heathrow (LHR) to San Francisco (SFO)

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
Jan 22 — Jan 291
Wed 1/22
Wed 1/29
1 adult, Economy
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The best prices from London Heathrow to San Francisco are usually found in February or November, booked 22 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 January 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$536
(Air Canada)

One-way from

$502
(Trip.com)

Popular in

July

Cheapest in

February

Average price

$596
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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One-way flight 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 January 2025
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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 January 17, 2025.

This Air Canada deal was found by Cheapflights users on 1/16. 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.
Wed 3/126:30 amLHR - SFO
2 stops18h 01mMultiple Airlines
Fri 3/287:00 amSFO - LHR
2 stops18h 30mMultiple Airlines
Deal found 1/16$536
This ChecknFly deal was found by Cheapflights users on 1/16. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/105:40 pmLHR - SFO
1 stop25h 23mLufthansa
Sun 7/2010:35 amSFO - LHR
1 stop16h 35mLufthansa
Deal found 1/16$538
This Voliamo deal was found by Cheapflights users on 1/16. 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 Voliamo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/197:55 pmLHR - SFO
1 stop26h 50mTAP AIR PORTUGAL
Fri 1/247:15 pmSFO - LHR
1 stop18h 20mTAP AIR PORTUGAL
Deal found 1/16$540
This Austrian Airlines deal was found by Cheapflights users on 1/15. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/1310:05 amLHR - SFO
Nonstop11h 10mAustrian Airlines
Sun 3/212:50 pmSFO - LHR
Nonstop10h 35mAustrian Airlines
Deal found 1/15$541
This Delta deal was found by Cheapflights users on 1/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2011:15 amLHR - SFO
Nonstop11h 05mDelta
Sat 5/39:20 pmSFO - LHR
Nonstop10h 20mDelta
Deal found 1/15$543
This United Airlines deal was found by Cheapflights users on 1/16. 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.
Sat 4/1910:35 amLHR - SFO
Nonstop11h 05mUnited Airlines
Mon 4/2812:55 pmSFO - LHR
Nonstop10h 30mUnited Airlines
Deal found 1/16$545
This Air Canada deal was found by Cheapflights users on 1/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/131:00 pmLHR - SFO
1 stop31h 11mAir Canada
Mon 3/37:00 amSFO - LHR
2 stops17h 30mAir Canada
Deal found 1/15$546
This Netflights deal was found by Cheapflights users on 1/16. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2111:40 amLHR - SFO
Nonstop11h 05mVirgin Atlantic
Tue 2/44:40 pmSFO - LHR
Nonstop10h 15mVirgin Atlantic
Deal found 1/16$547
This SWISS deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/2912:05 pmLHR - SFO
1 stop36h 20mSWISS
Sat 2/87:25 pmSFO - LHR
1 stop14h 25mSWISS
Deal found 1/16$551
This Finnair deal was found by Cheapflights users on 1/16. 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.
Thu 1/233:20 pmLHR - SFO
Nonstop11h 25mFinnair
Wed 2/510:40 amSFO - LHR
1 stop13h 55mFinnair
Deal found 1/16$552
This TravelUp deal was found by Cheapflights users on 1/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/208:25 pmLHR - SFO
1 stop23h 25mKLM
Fri 2/712:09 pmSFO - LHR
1 stop14h 26mKLM
Deal found 1/16$554
This Cheapflightsfares deal was found by Cheapflights users on 1/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/162:15 pmLHR - SFO
Nonstop11h 00mBritish Airways
Wed 4/304:35 pmSFO - LHR
Nonstop10h 25mBritish Airways
Deal found 1/15$565

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 January 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 3/12

6:30 am-5:31 pm

2 stops18h 01m

San Francisco

Fri 3/28

7:00 am-8:30 am

2 stops18h 30m

$536

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 7/10

5:40 pm-11:03 am

1 stop25h 23m

San Francisco

Sun 7/20

10:35 am-11:10 am

1 stop16h 35m

$538

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 2/13

8:05 pm-4:25 pm

1 stop28h 20m

San Francisco

Tue 2/25

7:25 pm-5:50 pm

1 stop14h 25m

$541

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 2/13

10:05 am-1:15 pm

Nonstop11h 10m

San Francisco

Fri 2/21

12:50 pm-7:25 am

Nonstop10h 35m

$542

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 4/20

11:15 am-2:20 pm

Nonstop11h 05m

San Francisco

Tue 4/29

4:10 pm-10:30 am

Nonstop10h 20m

$543

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 4/19

10:35 am-1:40 pm

Nonstop11h 05m

San Francisco

Mon 4/28

12:55 pm-7:25 am

Nonstop10h 30m

$545

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 2/13

1:00 pm-12:11 pm

1 stop31h 11m

San Francisco

Mon 3/3

7:00 am-8:30 am

2 stops17h 30m

$546

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 2/3

11:45 am-3:00 pm

Nonstop11h 15m

San Francisco

Sat 2/8

10:53 pm-6:45 am

1 stop23h 52m

$560

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 3/25

9:05 pm-4:40 pm

2 stops26h 35m

San Francisco

Tue 4/1

7:40 pm-9:35 pm

2 stops17h 55m

$563

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 2/14

7:10 am-6:45 pm

2 stops19h 35m

San Francisco

Sun 2/23

8:35 pm-9:20 pm

2 stops16h 45m

$570

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

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 January.
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*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
Thrive TravelPrice Accuracy3 starsTrust Score*1 star
OvagoPrice Accuracy2 starsTrust Score*3 stars
KAYAKPrice Accuracy-Trust Score*1 star
PricelinePrice Accuracy2 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 stars

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

  • Most accurate provider: When it comes to deals on London Heathrow Airport-San 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 January 10, 2025.

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 22 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 $405). 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 January 17, 2025.

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 January 17, 2025.

The most flights from LHR to SFO are scheduled on a Monday (31 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (24 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 January 17, 2025.
Get a feel of what it's like to fly with Finnair, American Airlines and Brussels 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
8,511 reviews

Comfort

8.0

Entertainment

7.9

Overall

8.0

Food

7.3

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
8,511 reviews
Delta
8.0
Very good
8,511 reviews

Comfort

8.0

Entertainment

7.9

Overall

8.0

Food

7.3

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
7.9
Good
485 reviews
Delta
8.0
Very good
8,511 reviews

Comfort

8.0

Entertainment

7.9

Overall

8.0

Food

7.3

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
7.6
Good
1,285 reviews
Delta
8.0
Very good
8,511 reviews

Comfort

8.0

Entertainment

7.9

Overall

8.0

Food

7.3

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
786 reviews
Delta
8.0
Very good
8,511 reviews

Comfort

8.0

Entertainment

7.9

Overall

8.0

Food

7.3

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

SWISS
7.5
Good
1,598 reviews
Delta
8.0
Very good
8,511 reviews

Comfort

8.0

Entertainment

7.9

Overall

8.0

Food

7.3

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 30 daily inbound flights from London Heathrow from 12 different airlines.

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

    According to our current data, Lufthansa ($538), SWISS ($541), and Delta ($543) offers the cheapest pricing from London Heathrow Airport to San Francisco. Lufthansa is priced at 20% 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 WestJet, which is currently one of the cheapest options available, starting at $502. Aer Lingus flights start at $503 while deals on Air New Zealand start at $516 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 Air Canada (63%), Austrian Airlines (63%) and United Airlines (63%).

  • 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 $1,367, our data shows the cheapest flight currently is $532. When looking at the most popular route, (London Heathrow - San Francisco), you can expect to pay $460 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 $405). 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
Mountain View
Roseville
Turlock
Santa Cruz
Fairfield
Manteca
Sausalito
Watsonville
Hayward
Richmond
Hollister
Antioch
South San Francisco
Milpitas
Elk Grove
Newark
Alameda
Campbell
Lathrop
Pacific Grove

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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 January 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$415Average$680FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$476Average$692FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$514Average$670FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$515Average$655FlexibilityNo cancel feeOn-time70%
DeltaCheapest$519Average$719FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$525Average$571FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$545Average$734FlexibilityNo cancel feeOn-time71%
Brussels AirlinesCheapest$546Average$647FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$549Average$715FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$551Average$753FlexibilityNo cancel feeOn-time72%
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