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Cheap flights from London Heathrow Airport to San Francisco from ₹ 45,873

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
4 May — 11 May1
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 60 days in advance, depart on a Tuesday or Wednesday 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 4 April 2026.

Wed 29/408:40
LHR
-
SFO
1 stop15h 35m
United Airlines
Wed 6/512:00
SFO
-
LHR
1 stop13h 40m
United Airlines
Deal found 30/3₹ 55,418
Mon 20/406:30
LHR
-
SFO
1 stop14h 10m
Lufthansa
Mon 4/519:30
SFO
-
LHR
Nonstop10h 40m
Lufthansa
Deal found 30/3₹ 55,882
Wed 3/612:10
LHR
-
SFO
1 stop36h 05m
United Airlines
Wed 10/616:30
SFO
-
LHR
1 stop30h 05m
United Airlines
Deal found 30/3₹ 56,160
Mon 20/413:00
LHR
-
SFO
Nonstop11h 10m
Austrian Airlines
Mon 4/519:30
SFO
-
LHR
Nonstop10h 40m
Austrian Airlines
Deal found 30/3₹ 58,755
Mon 20/410:35
LHR
-
SFO
Nonstop11h 05m
United Airlines
Mon 4/516:35
SFO
-
LHR
Nonstop10h 35m
United Airlines
Deal found 30/3₹ 59,033
Mon 20/418:40
LHR
-
SFO
2 stops33h 05m
SWISS
Mon 4/514:00
SFO
-
LHR
2 stops18h 35m
SWISS
Deal found 30/3₹ 59,125
Mon 3/813:40
LHR
-
SFO
1 stop18h 35m
United Airlines
Thu 20/810:40
SFO
-
LHR
1 stop15h 00m
United Airlines
Deal found 30/3₹ 59,311
Fri 12/606:55
LHR
-
SFO
1 stop15h 25m
United Airlines
Tue 30/605:05
SFO
-
LHR
1 stop19h 55m
United Airlines
Deal found 30/3₹ 59,496
Sat 25/413:35
LHR
-
SFO
1 stop37h 25m
United Airlines
Thu 30/412:05
SFO
-
LHR
1 stop14h 05m
United Airlines
Deal found 30/3₹ 60,423
Wed 15/407:00
LHR
-
SFO
2 stops17h 15m
SWISS
Wed 22/419:35
SFO
-
LHR
2 stops17h 55m
SWISS
Deal found 30/3₹ 61,720

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 4 April 2026.

Round-trip from

₹ 55,418

One-way from

₹ 45,873

Popular in

December

Cheapest in

February

Average price

₹ 59,218
United Airlines
  • United Airlines
  • 29/4-6/5
  • 2 total stops
  • 29h 15m total
  • London to San Francisco
Search Deals
SWISS
  • SWISS
  • 10/5
  • 1 total stop
  • 28h 10m total
  • London to San Francisco
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (₹ 289,050 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (₹ 154,945 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 4 April 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 - SFO

LHRSFO

London Heathrow

Sun 2/8

09:30-11:21

1 stop33h 51m

San Francisco

Mon 10/8

16:45-11:10

Nonstop10h 25m

₹ 62,832

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 1/6

16:55-00:09

1 stop15h 14m

San Francisco

Tue 9/6

12:36-10:55

1 stop14h 19m

₹ 67,744

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 5/9

15:35-14:40

2 stops31h 05m

San Francisco

Fri 18/9

16:45-18:30

2 stops17h 45m

₹ 68,022

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 15/4

12:45-15:45

Nonstop11h 00m

San Francisco

Wed 22/4

23:15-17:30

Nonstop10h 15m

₹ 68,393

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 1/5

18:25-21:20

Nonstop10h 55m

San Francisco

Tue 5/5

13:10-10:15

1 stop13h 05m

₹ 69,690
Fastest return journey

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 27/4

18:30-21:25

Nonstop10h 55m

San Francisco

Fri 1/5

23:15-17:30

Nonstop10h 15m

₹ 70,153

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 23/9

10:45-13:50

Nonstop11h 05m

San Francisco

Sun 27/9

19:30-13:55

Nonstop10h 25m

₹ 70,802

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 2/9

19:50-14:40

2 stops26h 50m

San Francisco

Wed 16/9

16:45-17:00

2 stops16h 15m

₹ 70,987

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 18/5

06:30-11:45

1 stop13h 15m

San Francisco

Tue 26/5

23:15-17:30

Nonstop10h 15m

₹ 72,285
Cheapest one-way
Fastest single journey

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 15/9

13:00-16:05

Nonstop11h 05m

₹ 48,190

Flights are sorted by cheapest return flights first.

Deals found on 1/4

Showing 1-10 of 21 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?

Use this chart to determine the optimal time to book a return flight from Heathrow to San Francisco. Price data was last updated on 2 April 2026.

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 60 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 ₹ 44,020). Flying from London Heathrow Airport to San Francisco in July is currently the most expensive (average of ₹ 54,121). 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 4 April 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?

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 37 daily inbound flights from London Heathrow from 0 different airlines.

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

    Delta, Scandinavian Airlines, and British Airways can get you from London Heathrow Airport to San Francisco in just under 10h 55m. Your travel time can differ by up to 14h 40m. 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 New Zealand(83%), Air Canada(79%) or Austrian Airlines(79%), 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 ₹ 44,020). Flying from London Heathrow Airport to San Francisco in July is currently the most expensive (average of ₹ 54,121). 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
Fairfield
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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