Question 1

What are the cheapest airlines flying from London to San Francisco round-trip?

Accepted Answer

Our cheapest airline available from London to San Francisco is SWISS. Our recent data shows that you can find tickets from as low as ₹ 45,781 on this airline. Additional options worth looking into are Lufthansa and United Airlines, starting at ₹ 45,866 and ₹ 45,952 round-trip. Users have found that SWISS is 20% cheaper than the other options available to this destination. Find deals

Question 2

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

Accepted Answer

The cheapet airlines for a one-way flight from London to San Francisco are WestJet (₹ 47,489), Vueling (₹ 47,745), and TAP AIR PORTUGAL (₹ 49,112). Find deals

Question 3

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

Accepted Answer

To ensure you get the cheapest price possible for a flight from London to San Francisco, you should look to book at least 86 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. Find deals

Question 4

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

Accepted Answer

Currently, October is the cheapest month in which you can book a flight from London to San Francisco (average of ₹ 983). Flying from London to San Francisco in August is currently the most expensive (average of ₹ 1,340). 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. Find deals

Question 5

What is the cheapest day to fly from London to San Francisco?

Accepted Answer

Travellers seeking maximum savings on their London to San Francisco flight should consider departing on Sunday at midday when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

Weekly flight availability from London to San Francisco

Accepted Answer

The most flights from LON to SFO are scheduled on a Monday (42 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (42 on average).

Question 7

E

Accepted Answer

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

Question 8

E

Accepted Answer

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

Question 9

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

Accepted Answer

No one likes to see their flight delayed. When booking a flight from London to San Francisco consider choosing Air Canada(88%), Austrian Airlines(88%) or United Airlines(88%), as they are the most reliable in getting you off to your destination on time.

Question 10

What are the most popular airlines that fly from London to San Francisco?

Accepted Answer

When booking a flight from London to San Francisco, you may want to consider flying on British Airways, United Airlines or Virgin Atlantic as they are the most popular for this route.

Question 11

What is the cheapest day to fly return from London to San Francisco?

Accepted Answer

Travellers have found that booking a Wednesday departure is the best way to save up to 39% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

Question 12

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

Accepted Answer

To save up to 15% on this flight, we recommend booking at least 61 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from London to San Francisco from ₹ 52,101 1-2 weeks out and tickets from ₹ 61,411 for flights departing within the next 72 hours.

Question 13

What is the cheapest month to fly from London to San Francisco?

Accepted Answer

The best pricing can be found in the month of February. Prices to San Francisco from London average ₹ 57,938. You can even find prices in February for less than ₹ 57,938, as users have found deals to San Francisco from as low as ₹ 38,777. The month of July appears to be one of the more expensive times to travel to San Francisco from London. Flying in the targeted month can save you up to 32%.

Question 14

What is the cheapest time of day to fly from LON to SFO?

Accepted Answer

A simple way to save on the total cost of your ticket is to fly from London to San Francisco at midday. If you’re flexible enough to do this you can expect to save up to 11% on your trip compared to booking a flight in the morning.

Question 15

What airport do you fly into for flights to San Francisco from London?

Accepted Answer

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. 3 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 42 inbound flights from London per day.

Question 16

Can I find deals for flights from London to San Francisco that include hotel bookings?

Accepted Answer

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

Question 17

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

Accepted Answer

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.

Question 18

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

Accepted Answer

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.

Question 19

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

Accepted Answer

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.

Question 20

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

Accepted Answer

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.

Question 21

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

Accepted Answer

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.

Question 22

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

Accepted Answer

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.

Round-trip from	₹ 45,781
One-way from	₹ 44,671
Popular in	July
Cheapest in	February
Average price	₹ 58,849

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest₹ 38,529	Average₹ 90,269	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
British Airways	Cheapest₹ 44,759	Average₹ 52,486	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest₹ 49,910	Average₹ 52,086	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

Cheap flights from London to San Francisco from ₹ 44,671

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 14/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London to San Francisco are usually found in February or November, booked 86 days in advance, depart on a Wednesday or Saturday and return on a Sunday

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Cheapest flights from London to San FranciscoExplore 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 30 June 2025.

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 30 June 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to San Francisco that are best for you.

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.

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 27 June 2025.

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

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 30 June 2025.

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 30 June 2025.

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

Reviews of airlines servicing San Francisco

Read through reviews of airlines operating flights from London to San Francisco, such as Delta, Austrian Airlines, andSWISS. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

What are the cheapest airlines flying from London to San Francisco round-trip?

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

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

Can I find deals for flights from London to San Francisco that include hotel bookings?

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

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

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

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Top 3 airlines flying from London to San Francisco

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

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

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

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

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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 30 June 2025.