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Cheap flights from London to San Francisco from ₹ 44,532

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
15 Dec — 22 Dec1
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

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 15 November 2025.

Round-trip from

₹ 49,145

One-way from

₹ 44,532

Popular in

July

Cheapest in

September

Average price

₹ 53,315
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 8/3-18/3
  • 2 total stops
  • 55h 00m total
  • London to San Francisco
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United Airlines
  • United Airlines
  • 17/1
  • Nonstop
  • 11h 15m total
  • London to San Francisco
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Highest demand for flights based on searches. 14% potential increase in price (₹ 873,459 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (₹ 139,344 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Find 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 15 November 2025.

Thu 20/1116:00LGW - SFO
1 stop32h 05mTAP AIR PORTUGAL
Mon 1/1216:35SFO - LGW
2 stops20h 00mTAP AIR PORTUGAL
Deal found 14/11₹ 50,033
Sat 6/1206:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Mon 12/116:40SFO - LHR
2 stops18h 10mScandinavian Airlines
Deal found 14/11₹ 50,831
Thu 4/1221:05LHR - SFO
2 stops25h 30mScandinavian Airlines
Mon 8/1216:40SFO - LHR
2 stops18h 10mScandinavian Airlines
Deal found 14/11₹ 51,541
Sat 13/1210:10LGW - SFO
2 stops60h 25mTAP AIR PORTUGAL
Sat 17/116:35SFO - LGW
1 stop33h 15mTAP AIR PORTUGAL
Deal found 14/11₹ 53,492
Fri 12/1219:50LHR - SFO
2 stops26h 45mScandinavian Airlines
Sat 17/116:40SFO - LHR
1 stop17h 00mScandinavian Airlines
Deal found 14/11₹ 53,847
Sat 22/1110:10LGW - SFO
2 stops60h 25mTAP AIR PORTUGAL
Sat 29/1116:35SFO - LGW
1 stop33h 15mTAP AIR PORTUGAL
Deal found 14/11₹ 55,799
Mon 15/1206:20LHR - SFO
1 stop15h 05mDelta
Tue 30/1213:45SFO - LHR
1 stop12h 45mDelta
Deal found 15/11₹ 55,976
Fri 12/1206:30LHR - SFO
1 stop13h 20mDelta
Sun 14/1211:40SFO - LHR
1 stop13h 05mDelta
Deal found 13/11₹ 56,065
Fri 12/1206:30LHR - SFO
1 stop13h 20mDelta
Fri 26/1200:10SFO - LHR
1 stop22h 55mDelta
Deal found 14/11₹ 56,154
Fri 12/1206:30LHR - SFO
1 stop13h 20mDelta
Tue 16/1214:00SFO - LHR
1 stop13h 40mDelta
Deal found 14/11₹ 56,242
Wed 26/1119:30LHR - SFO
1 stop27h 05mScandinavian Airlines
Mon 8/1216:40SFO - LHR
2 stops19h 15mScandinavian Airlines
Deal found 13/11₹ 56,420
Sat 6/1210:10LGW - SFO
2 stops60h 25mTAP AIR PORTUGAL
Mon 12/116:35SFO - LGW
1 stop15h 10mTAP AIR PORTUGAL
Deal found 14/11₹ 57,484

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 15 November 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

LGW - SFO

LGWSFO

London Gatwick

Mon 16/2

21:25-14:30

2 stops49h 05m

San Francisco

Wed 25/2

16:35-09:50

1 stop33h 15m

₹ 51,274

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 11/2

09:00-16:30

1 stop15h 30m

San Francisco

Tue 24/2

00:43-07:30

1 stop22h 47m

₹ 54,379

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 18/3

09:00-17:30

1 stop15h 30m

San Francisco

Wed 25/3

18:25-12:00

Nonstop10h 35m

₹ 54,379

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 4/2

09:00-16:30

1 stop15h 30m

San Francisco

Wed 18/2

06:50-09:40

1 stop18h 50m

₹ 54,557

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 15/4

08:45-16:10

1 stop15h 25m

San Francisco

Tue 21/4

00:45-07:40

1 stop22h 55m

₹ 55,799

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 20/2

11:40-14:40

Nonstop11h 00m

San Francisco

Tue 24/2

16:30-10:40

Nonstop10h 10m

₹ 56,065

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 3/12

19:30-14:35

1 stop27h 05m

San Francisco

Fri 1/5

16:45-09:35

2 stops32h 50m

₹ 56,154

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 16/2

11:40-14:40

Nonstop11h 00m

San Francisco

Sun 22/2

00:40-07:05

1 stop22h 25m

₹ 56,242

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 1/5

19:50-14:40

2 stops26h 50m

San Francisco

Mon 18/5

16:45-19:55

2 stops19h 10m

₹ 56,331

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 15/2

13:40-14:35

1 stop32h 55m

San Francisco

Mon 2/3

16:35-17:30

1 stop16h 55m

₹ 57,307

Flights are sorted by cheapest return flights first.

Deals found on 13/11

Showing 1-10 of 40 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 7 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, December is the cheapest month in which you can book a flight from London to San Francisco (average of ₹ 40,186). Flying from London to San Francisco in July is currently the most expensive (average of ₹ 54,379). 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 15 November 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 15 November 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 much does it cost for a return flight from London to San Francisco?

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 15 November 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
9,017 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

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
9,017 reviews
United Airlines
7.4
Good
9,017 reviews
Check prices

Entertainment

7.1

Comfort

7.3

Crew

8.1

Overall

7.4

Food

6.6

Boarding

7.7

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 TAP AIR PORTUGAL, United Airlines, and Delta fly from London to San Francisco in about 15h 05m. The time it takes to get you to your destination can typically vary by up to 34h. 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 ₹ 49,338 on this airline. An additional option worth looking into is British Airways, starting at ₹ 50,542. Users have found that Virgin Atlantic is 17% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from London to San Francisco one-way?

    The cheapet airlines for a one-way flight from London to San Francisco are British Airways (₹ 44,621), JetBlue (₹ 44,976), and United Airlines (₹ 45,331).

  • 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(84%), Air Canada(82%) or Austrian Airlines(82%), 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, December is the cheapest month in which you can book a flight from London to San Francisco (average of ₹ 40,186). Flying from London to San Francisco in July is currently the most expensive (average of ₹ 54,379). 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

Browse thousands of different options on Cheapflights for your next trip

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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 15 November 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest₹ 49,338Average₹ 54,097FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest₹ 50,542Average₹ 54,859FlexibilityNo 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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