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Cheap flights from London to San Francisco from ₹ 43,891

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 17/1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SFO
2 Jan — 9 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London to San Francisco are usually found in September or February, booked 51 days in advance, depart on a Wednesday or Saturday and return on a Friday

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 3 December 2025.

Thu 25/1219:55LHR - SFO
1 stop28h 10mTAP AIR PORTUGAL
Wed 14/116:35SFO - LHR
1 stop16h 55mTAP AIR PORTUGAL
Deal found 3/12₹ 56,148
Fri 12/1211:40LHR - SFO
Nonstop11h 00mDelta
Mon 29/1213:55SFO - LHR
1 stop12h 50mDelta
Deal found 2/12₹ 56,329
Thu 25/1216:00LGW - SFO
1 stop32h 05mTAP AIR PORTUGAL
Sat 17/116:35SFO - LGW
1 stop33h 15mTAP AIR PORTUGAL
Deal found 3/12₹ 56,419
Sun 14/1206:00LHR - SFO
1 stop18h 30mSWISS
Tue 20/111:45SFO - LHR
2 stops20h 35mSWISS
Deal found 2/12₹ 56,599
Tue 23/1218:40LHR - SFO
1 stop29h 50mSWISS
Thu 15/119:25SFO - LHR
1 stop18h 15mSWISS
Deal found 3/12₹ 56,689
Tue 16/1211:40LHR - SFO
Nonstop11h 00mDelta
Fri 9/116:30SFO - LHR
Nonstop10h 10mDelta
Deal found 2/12₹ 56,779
Sat 13/1210:45LHR - SFO
1 stop20h 16mDelta
Mon 29/1213:55SFO - LHR
1 stop15h 55mDelta
Deal found 2/12₹ 56,869
Sun 14/1207:50LHR - SFO
1 stop16h 45mBritish Airways
Sun 28/1211:20SFO - LHR
1 stop18h 40mBritish Airways
Deal found 2/12₹ 57,230
Tue 16/1211:45LHR - SFO
Nonstop11h 15mBritish Airways
Tue 23/1217:20SFO - LHR
1 stop18h 30mBritish Airways
Deal found 1/12₹ 58,131
Sun 14/1206:00LHR - SFO
1 stop18h 30mSWISS
Thu 22/119:25SFO - LHR
2 stops18h 00mSWISS
Deal found 2/12₹ 58,582
Sat 6/1210:10LGW - SFO
2 stops60h 25mTAP AIR PORTUGAL
Mon 12/116:35SFO - LGW
1 stop15h 10mTAP AIR PORTUGAL
Deal found 2/12₹ 58,852
Sat 27/1211:40LHR - SFO
Nonstop11h 00mDelta
Mon 19/116:30SFO - LHR
Nonstop10h 10mDelta
Deal found 2/12₹ 59,032

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 3 December 2025.

Round-trip from

₹ 55,878

One-way from

₹ 43,891

Popular in

July

Cheapest in

September

Average price

₹ 72,011
Delta
  • Delta
  • 2/3-27/3
  • 2 total stops
  • 55h 10m total
  • London to San Francisco
Search Deals
SWISS
  • SWISS
  • 17/1
  • 1 total stop
  • 29h 50m total
  • London to San Francisco
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (₹ 860,199 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (₹ 139,117 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 3 December 2025.
Use the filters below to find and compare flights from London to San Francisco that are best for you.

Fly from

London

Fly to

San Francisco

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 16/12

11:40-14:40

Nonstop11h 00m

San Francisco

Fri 9/1

16:30-10:40

Nonstop10h 10m

₹ 56,779

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 6/4

06:40-14:40

1 stop16h 00m

San Francisco

Thu 23/4

16:45-17:40

1 stop16h 55m

₹ 57,681

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 6/4

06:40-14:40

1 stop16h 00m

San Francisco

Sat 25/4

16:45-18:30

1 stop17h 45m

₹ 57,681

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 6/4

06:40-14:40

1 stop16h 00m

San Francisco

Tue 28/4

16:45-17:40

1 stop16h 55m

₹ 57,681

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 6/4

06:40-14:40

1 stop16h 00m

San Francisco

Mon 27/4

16:45-18:30

1 stop17h 45m

₹ 57,681

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 6/4

06:40-14:40

1 stop16h 00m

San Francisco

Fri 24/4

16:45-16:00

1 stop15h 15m

₹ 57,681

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 21/1

10:05-13:20

Nonstop11h 15m

San Francisco

Tue 10/2

16:20-13:30

1 stop13h 10m

₹ 58,852

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 19/2

09:00-16:30

1 stop15h 30m

San Francisco

Wed 4/3

11:09-09:40

1 stop14h 31m

₹ 59,123

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 22/2

11:45-11:50

1 stop32h 05m

San Francisco

Tue 10/3

17:30-10:40

Nonstop10h 10m

₹ 59,393

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 18/2

10:15-22:59

1 stop20h 44m

San Francisco

Sat 7/3

17:30-12:00

Nonstop10h 30m

₹ 60,114

Flights are sorted by cheapest return flights first.

Deals found on 3/12

Showing 1-10 of 44 results
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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

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

Use this chart to determine the optimal time to book a return flight from London to San Francisco. Price data was last updated on 28 November 2025.

To ensure you get the cheapest price possible for a flight from London to San Francisco, you should look to book at least 51 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 to San Francisco?

Currently, April is the cheapest month in which you can book a flight from London to San Francisco (average of ₹ 41,097). Flying from London to San Francisco in July is currently the most expensive (average of ₹ 55,247). 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 3 December 2025.

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 3 December 2025.

The most flights from LON to SFO are scheduled on a Monday (31 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (31 on average).

How often are flights from London to San Francisco delayed?

About 13% of weekly flights between London and San Francisco have experienced delays in the past year, with the average delay time being 140 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?

Tuesday tends to have the lowest number of delays on this route, whereas Sunday 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, Virgin Atlantic have had the lowest number of delays on this route, with just 12% of flights being delayed.

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 3 December 2025.
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
9,063 reviews
Check prices

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.
United Airlines
7.4
Good
9,063 reviews
United Airlines
7.4
Good
9,063 reviews
Check prices

Boarding

7.7

Food

6.6

Overall

7.4

Comfort

7.3

Entertainment

7.1

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Tim,Sept 2025

LHR - IAD

The premium economy seats were very comfortable and the attention and service by the flight attendants was superb.

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 19.0 km from the city centre, is the airport you fly into when you book flights from London to San Francisco. 2 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 31 inbound flights from London per day.

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

    Airlines like Delta, Scandinavian Airlines, and Air Transat 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 22h. 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 cheapest airlines flying from London to San Francisco round-trip?

    Our cheapest airline available from London to San Francisco is Virgin Atlantic. Our recent data shows that you can find tickets from as low as ₹ 50,125 on this airline. An additional option worth looking into is British Airways, starting at ₹ 51,348. Users have found that Virgin Atlantic is 17% cheaper than the other options available to this destination.

  • 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 New Zealand(85%), KLM(84%) or Air France(83%), 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, April is the cheapest month in which you can book a flight from London to San Francisco (average of ₹ 41,097). Flying from London to San Francisco in July is currently the most expensive (average of ₹ 55,247). 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
Fairfield
Mountain View
Burlingame
Milpitas

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

Top 2 airlines flying from London to San Francisco

Discover the top 2 airlines that operate flights from London 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 454,620 searches. Data last updated 3 December 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest₹ 50,125Average₹ 53,941FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest₹ 51,348Average₹ 55,382FlexibilityNo cancel feeOn-time70%
Search British Airways 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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