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Cheap flights from London Heathrow Airport to San Francisco from ₹ 46,457

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 27/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
13 Sep — 20 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to San Francisco are usually found in February or September, booked 23 days in advance, depart on a Wednesday or Thursday and return on a Sunday

Cheap flight deals from Heathrow to San Francisco

Enter your travel dates to find the best prices.

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 14 August 2026.

Sun 20/1207:40 -
1 stop25h 17m
Mon 28/1206:00 -
1 stop23h 30m
Deal found 11/8₹ 56,760
Fri 18/1211:35 -
2 stops20h 32m
Sat 2/119:01 -
1 stop30h 39m
Deal found 10/8₹ 56,855
Tue 24/1106:30 -
1 stop13h 15m
Mon 18/116:40 -
Nonstop10h 15m
Deal found 13/8₹ 56,950
Thu 10/908:45 -
1 stop15h 30m
Thu 17/912:50 -
Nonstop10h 35m
Deal found 13/8₹ 57,046
Thu 10/916:15 -
Nonstop11h 00m
Wed 23/912:50 -
Nonstop10h 35m
Deal found 10/8₹ 57,141
Mon 14/1206:30 -
1 stop13h 15m
Wed 13/113:05 -
1 stop13h 35m
Deal found 11/8₹ 57,332
Tue 22/910:35 -
Nonstop11h 00m
Fri 2/1012:55 -
Nonstop10h 30m
Deal found 10/8₹ 57,427
Tue 15/1206:20 -
1 stop14h 35m
Tue 29/1213:50 -
1 stop12h 50m
Deal found 13/8₹ 57,523
Sat 19/914:05 -
1 stop15h 43m
Fri 2/1012:28 -
1 stop13h 42m
Deal found 10/8₹ 57,714
Sun 6/908:20 -
1 stop15h 38m
Sat 19/916:35 -
Nonstop10h 25m
Deal found 9/8₹ 57,809

Find 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 14 August 2026.

Round-trip from

₹ 56,760

One-way from

₹ 46,457

Popular in

December

Cheapest in

February

Average price

₹ 77,174
United Airlines
  • United Airlines
  • 20/12-28/12
  • 2 total stops
  • 48h 47m total
  • London to San Francisco
Search Deals
SWISS
  • SWISS
  • 27/9
  • 1 total stop
  • 28h 10m total
  • London to San Francisco
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (₹ 19,663 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (₹ 115,988 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 454,620 searches. Data last updated 14 August 2026.
Use the filters below to find and compare flights from London Heathrow Airport to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Thu 10/9

08:45-16:15

1 stop15h 30m

San Francisco

Thu 17/9

12:50-07:25

Nonstop10h 35m

₹ 57,046
Fastest return journey

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Sun 6/9

10:35-13:35

Nonstop11h 00m

San Francisco

Sat 19/9

16:45-11:10

Nonstop10h 25m

₹ 57,237

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Wed 23/9

07:00-16:15

2 stops17h 15m

San Francisco

Wed 30/9

14:25-16:35

2 stops18h 10m

₹ 60,194

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Fri 11/9

13:00-16:05

Nonstop11h 05m

San Francisco

Thu 24/9

12:55-07:25

Nonstop10h 30m

₹ 60,575

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Sun 27/9

10:35-13:35

Nonstop11h 00m

San Francisco

Sun 4/10

16:45-11:10

Nonstop10h 25m

₹ 60,671

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Thu 8/10

17:00-22:49

1 stop13h 49m

San Francisco

Sat 17/10

11:00-15:05

1 stop20h 05m

₹ 60,862

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Sat 29/8

09:30-21:47

2 stops20h 17m

San Francisco

Fri 4/9

21:13-09:40

1 stop28h 27m

₹ 62,102

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Sat 5/9

14:50-22:55

2 stops16h 05m

San Francisco

Sat 12/9

12:35-09:40

1 stop13h 05m

₹ 65,536

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Fri 4/9

14:50-22:55

2 stops16h 05m

San Francisco

Fri 11/9

14:20-12:25

1 stop14h 05m

₹ 65,727

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Tue 15/12

18:00-11:17

2 stops25h 17m

San Francisco

Tue 22/12

19:25-08:05

1 stop28h 40m

₹ 67,444

Flights are sorted by cheapest return flights first.

Deals found on 12/8

Showing 1-10 of 22 resultsSorted by cheapest first
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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 return 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 London Heathrow Airport to San Francisco

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

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to San Francisco, you should look to book at least 22 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Francisco (average of ₹ 57,046). Flying from London Heathrow Airport to San Francisco in December is currently the most expensive (average of ₹ 82,802). 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 14 August 2026.

When flying from London Heathrow Airport to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from London Heathrow Airport to San Francisco?

Airfare is below average for this route at the moment.

London Heathrow Airport to San Francisco flights typically cost between ₹ 67,158 and ₹ 89,957 in December.
The cheapest return price found within the last 5 days was ₹ 56,760 on United Airlines (20 Dec–28 Dec).

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 17.7 km from the city centre, San Francisco is the airport most travellers 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 32 daily inbound flights from London Heathrow from 0 different airlines.

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

    Lufthansa, United Airlines, and KLM can get you from London Heathrow Airport to San Francisco in just under 11h. Your travel time can differ by up to 2h 15m. The distance from London Heathrow Airport to San Francisco is about 8610 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    No one likes to see their flight delayed. When booking a flight from London Heathrow Airport to San Francisco consider choosing Air Canada(74%), Austrian Airlines(74%) or United Airlines(74%), as they are the most reliable in getting you off to your destination on time.

  • 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 holiday 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Francisco (average of ₹ 57,046). Flying from London Heathrow Airport to San Francisco in December is currently the most expensive (average of ₹ 82,802). 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

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
San Bruno
Mountain View
Burlingame
Milpitas
Santa Clara

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How does Cheapflights help users find flights from Heathrow to San Francisco?

Deals for Heathrow to San Francisco flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to San Francisco?

Cheapflights helps you find that perfect flight to San Francisco from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Heathrow to San Francisco with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to San Francisco, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Heathrow to San Francisco become cheaper?

Not ready to book yet? You can track prices for flights from Heathrow to San Francisco on Cheapflights with our Price Alert feature and get notified when better prices are available.

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