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Cheap flights from London to San Francisco from ₹ 46,450

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.
LON — SFO
11 Sep — 18 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to San Francisco are usually found in February or September, booked 41 days in advance, depart on a Wednesday or Thursday and return on a Sunday

Cheap flight deals from London to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from London to San Francisco
Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 August 2026.

Sun 20/1207:40 -
1 stop25h 17m
Mon 28/1206:00 -
1 stop23h 30m
Deal found 11/8₹ 56,751
Fri 18/1211:35 -
2 stops20h 32m
Sat 2/119:01 -
1 stop30h 39m
Deal found 10/8₹ 56,846
Sun 20/909:50 -
1 stop14h 05m
Fri 9/1016:35 -
Nonstop10h 25m
Deal found 12/8₹ 56,941
Thu 10/916:15 -
Nonstop11h 00m
Wed 23/910:43 -
1 stop14h 57m
Deal found 11/8₹ 57,037
Thu 17/909:25 -
1 stop15h 10m
Wed 9/1214:20 -
2 stops19h 30m
Deal found 7/8₹ 57,227
Sat 5/910:35 -
Nonstop11h 00m
Fri 18/916:45 -
Nonstop10h 25m
Deal found 8/8₹ 57,323
Tue 22/909:25 -
2 stops17h 06m
Tue 29/914:40 -
2 stops19h 10m
Deal found 7/8₹ 57,323
Sun 6/916:15 -
Nonstop10h 55m
Sat 19/912:50 -
Nonstop10h 35m
Deal found 9/8₹ 57,418
Tue 8/909:25 -
1 stop15h 10m
Tue 29/914:40 -
2 stops19h 10m
Deal found 10/8₹ 57,418
Tue 15/1211:35 -
1 stop16h 10m
Wed 13/108:25 -
1 stop14h 45m
Deal found 11/8₹ 57,514
Tue 6/1016:25 -
1 stop30h 10m
Tue 20/1016:20 -
1 stop15h 15m
Deal found 10/8₹ 57,609
Sat 19/914:05 -
1 stop15h 43m
Sat 3/1012:35 -
1 stop13h 05m
Deal found 10/8₹ 57,704

Find flight deals from London to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) 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 12 August 2026.

Round-trip from

₹ 56,751

One-way from

₹ 46,450

Popular in

December

Cheapest in

February

Average price

₹ 77,257
United Airlines
  • United Airlines
  • 11/9-17/9
  • 3 total stops
  • 41h 43m total
  • London to San Francisco
Search Deals
British Airways
  • British Airways
  • 7/10
  • Nonstop
  • 11h 05m total
  • London to San Francisco
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (₹ 53,017 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (₹ 99,780 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 London 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 12 August 2026.
Use the filters below to find and compare flights from London to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Francisco

LGW London Gatwick - SFO San Francisco

LGWSFO

London Gatwick

Thu 17/9

09:25-16:35

1 stop15h 10m

San Francisco

Wed 9/12

14:20-17:50

2 stops19h 30m

₹ 57,227

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Thu 10/9

14:50-22:55

2 stops16h 05m

San Francisco

Sat 19/9

23:59-21:20

1 stop13h 21m

₹ 57,609

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Thu 17/9

14:50-22:55

2 stops16h 05m

San Francisco

Wed 9/12

12:45-09:40

1 stop12h 55m

₹ 57,800

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Wed 25/11

06:30-11:45

1 stop13h 15m

San Francisco

Wed 13/1

16:40-10:55

Nonstop10h 15m

₹ 58,467

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Wed 25/11

13:45-16:55

Nonstop11h 10m

San Francisco

Sun 6/12

12:50-07:25

Nonstop10h 35m

₹ 58,467

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Thu 17/9

07:00-16:15

2 stops17h 15m

San Francisco

Sun 20/9

19:35-21:30

2 stops17h 55m

₹ 60,089

LondonSan Francisco

LGW London Gatwick - SFO San Francisco

LGWSFO

London Gatwick

Tue 24/11

10:00-22:24

2 stops20h 24m

San Francisco

Fri 15/1

11:30-15:45

2 stops20h 15m

₹ 60,375

LondonSan Francisco

LGW London Gatwick - SFO San Francisco

LGWSFO

London Gatwick

Mon 28/9

17:00-12:20

2 stops27h 20m

San Francisco

Mon 12/10

20:10-09:25

1 stop29h 15m

₹ 61,043

LondonSan Francisco

LGW London Gatwick - SFO San Francisco

LGWSFO

London Gatwick

Tue 6/10

16:25-14:35

1 stop30h 10m

San Francisco

Mon 19/10

16:30-09:45

1 stop33h 15m

₹ 65,812

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Sat 22/8

10:35-13:35

Nonstop11h 00m

San Francisco

Fri 2/10

16:45-11:10

Nonstop10h 25m

₹ 68,673

Flights are sorted by cheapest return flights first.

Deals found on 12/8

Showing 1-10 of 48 resultsSorted by cheapest first
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Best time to book a flight from London to San Francisco

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

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

Currently, February is the cheapest month in which you can book a flight from London to San Francisco (average of ₹ 55,511). Flying from London to San Francisco in December is currently the most expensive (average of ₹ 81,740). 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 LON to SFO?

Find hourly flight availability from London 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 12 August 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to San Francisco as you normally would.

Weekly flight availability from London to San Francisco

Explore weekly flight availability from London 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 12 August 2026.

The most flights from LON to SFO are scheduled on a Monday (38 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (32 on average).

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

Airfare is below average for this route at the moment.
London to San Francisco flights typically cost between ₹ 68,768 and ₹ 89,656 in December.
The cheapest return price found within the last 5 days was ₹ 56,751 on United Airlines (20 Dec–28 Dec).

How often are flights from London to San Francisco delayed?

About 12% of weekly flights between London and San Francisco have experienced delays in the past year, with the average delay time being 144 minutes.

What is the most punctual flight time for London to San Francisco flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Friday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to San Francisco flights?

Over the past year, United Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.

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

To ensure you get the cheapest price possible for a flight from London 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.

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 12 August 2026.
Read through reviews of airlines operating flights from London to San Francisco, such as United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,111 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Food

6.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
10,111 reviews
United Airlines
7.4
Good
10,111 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Food

6.7

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Sept 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

Find useful and relevant information for your journey from London 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?

    San Francisco (SFO), located 17.7 km from the city centre, is the airport you fly into when you book flights from London to San Francisco. 0 airlines have flights to San Francisco from London on a regular basis. Booking flights from London to San Francisco should not be difficult; the airport handles an average of 37 inbound flights from London per day.

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

    Airlines like Lufthansa, United Airlines, and SWISS fly from London to San Francisco in about 11h. The time it takes to get you to your destination can typically vary by up to 4h 10m. The distance from London to San Francisco is about 8610 km. Both multi-stop and direct flights can be found to your destination and back.

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

    No one likes to see their flight delayed. When booking a flight from London 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 London to San Francisco that include hotel bookings?

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from London to San Francisco (average of ₹ 55,511). Flying from London to San Francisco in December is currently the most expensive (average of ₹ 81,740). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to San Francisco flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Deals for London 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 London to San Francisco?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from London to San Francisco.

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

Certainly. Search results for flights to San Francisco from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Of course! You can now track prices for flights from London to San Francisco and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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