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

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

How many flights depart from London to San Francisco on average per week?

The number of flights available between London and San Francisco is 217 per week as of December 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

What is the cheapest airline that flies from London to San Francisco?

SWISS, Finnair, and United Airlines are the most popular carriers operating from London to San Francisco

Which stopover airport offers the lowest fares from London to San Francisco?

Flights via Zurich (ZRH) offer the lowest average return price of £387.

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

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which stopover airport has the shortest connection time from London to San Francisco?

Amsterdam (AMS) has the shortest average stopover time for this route: 1h 06m.

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

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 12% of their flights experiencing any sort of delay.

Which airport is the most popular for stopovers for flights between London and San Francisco?

Copenhagen (CPH) was the most common stop: 31% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport has the shortest travel time from London to San Francisco?

Flights connecting via Amsterdam (AMS) have the shortest average one-way travel time: 13h 18m.

How many flights depart from London to San Francisco on average per day?

The number of flights available between London and San Francisco is 31 per day as of December 2025. The most frequent departure time is 11:00, with 58% of daily flights leaving at midday.

Which airlines fly to San Francisco?

Virgin Atlantic, British Airways and Lufthansa are the top three most popular airlines that fly to San Francisco from London according to our data. Virgin Atlantic is the first choice among our users, with 39% of people opting to fly with this airline when travelling to San Francisco. Keep in mind that there are 18 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

How often are flights from London to San Francisco delayed?

Historically, on average around 13% of flights between London and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 140 minutes.

When did momondo last update prices for flights from London to San Francisco Airport?

Prices for flights from London to San Francisco Airport are updated daily.

How many operators does momondo search for flights from London to San Francisco Airport?

As of December 2025, there are 18 operators available to choose from for flights from London to San Francisco Airport.

How old do you have to be to fly from London to San Francisco Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London to San Francisco Airport.

What documentation or ID do you need to fly to San Francisco Airport?

The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

£343 Cheap Flights from London to San Francisco in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from London to San Francisco

Round-trip

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

18:00 - 10:54

LHR

SFO

24h 54m1 stop

11:20 - 10:10

SFO

LHR

14h 50m2 stops

£464Multiple Airlines

Wed, 7 Jan - Fri, 16 Jan

09:15 - 16:30

LCY

SFO

15h 15m1 stop

19:25 - 17:05

SFO

LCY

13h 40m1 stop

£464SWISS

Thu, 22 Jan - Thu, 29 Jan

11:35 - 00:14

LGW

SFO

20h 39m2 stops

17:45 - 20:00

SFO

LGW

18h 15m1 stop

£465British Airways

Thu, 23 Apr - Thu, 7 May

09:00 - 16:30

LHR

SFO

15h 30m1 stop

19:25 - 17:50

SFO

LHR

14h 25m1 stop

£465SWISS

Thu, 25 Dec - Wed, 14 Jan

17:50 - 11:50

LCY

SFO

26h 00m1 stop

07:25 - 09:30

SFO

LCY

18h 05m2 stops

£465Virgin Atlantic

Tue, 13 Jan - Tue, 31 Mar

19:30 - 14:40

LHR

SFO

27h 10m1 stop

16:45 - 16:00

SFO

LHR

15h 15m1 stop

£465Scandinavian Airlines

Thu, 23 Apr - Sun, 10 May

08:10 - 12:50

STN

SFO

35h 40m2 stops

16:40 - 20:15

SFO

STN

20h 35m2 stops

£465Multiple Airlines

Tue, 10 Mar - Tue, 17 Mar

17:05 - 11:50

LCY

SFO

26h 45m1 stop

05:45 - 08:50

SFO

LCY

19h 05m2 stops

£466Virgin Atlantic

Mon, 12 Jan - Mon, 26 Jan

06:30 - 15:55

LHR

SFO

17h 25m1 stop

05:10 - 09:40

SFO

LHR

20h 30m1 stop

£466United Airlines

Tue, 17 Feb - Wed, 25 Feb

20:40 - 16:10

LGW

SFO

27h 30m1 stop

17:45 - 20:00

SFO

LGW

18h 15m1 stop

£467British Airways

Wed, 22 Apr - Thu, 7 May

SWISS flights from London to San Francisco

Our best SWISS deals on London to San Francisco flight tickets

SWISS

22 Jan

LCY09:15London City

15h 15m

1 stop

SFO16:30San Francisco

29 Jan

SFO19:25San Francisco

13h 40m

1 stop

LCY17:05London City

£464

Find similar

SWISS

25 Dec

LHR09:00London Heathrow

15h 30m

1 stop

SFO16:30San Francisco

14 Jan

SFO19:25San Francisco

14h 25m

1 stop

LHR17:50London Heathrow

£465

Find similar

SWISS

15 Jan

LGW18:40London Gatwick

29h 50m

1 stop

SFO16:30San Francisco

22 Jan

SFO19:25San Francisco

14h 25m

1 stop

LGW17:50London Gatwick

£475

Find similar

British Airways flights from London to San Francisco

Our best British Airways deals on London to San Francisco flight tickets

British Airways

23 Apr

LGW11:35London Gatwick

20h 39m

2 stops

SFO00:14San Francisco

7 May

SFO17:45San Francisco

18h 15m

1 stop

LGW20:00London Gatwick

£465

Find similar

British Airways

22 Apr

LGW20:40London Gatwick

27h 30m

1 stop

SFO16:10San Francisco

7 May

SFO17:45San Francisco

18h 15m

1 stop

LGW20:00London Gatwick

£467

Find similar

British Airways

21 Jan

LHR11:45London Heathrow

11h 15m

SFO15:00San Francisco

5 Feb

SFO17:30San Francisco

10h 30m

LHR12:00London Heathrow

£469

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 7/1

18:00-10:54

1 stop24h 54m

San Francisco

Fri 16/1

11:20-10:10

2 stops14h 50m

£464

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Thu 22/1

09:15-16:30

1 stop15h 15m

San Francisco

Thu 29/1

19:25-17:05

1 stop13h 40m

£464

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Thu 23/4

11:35-00:14

2 stops20h 39m

San Francisco

Thu 7/5

17:45-20:00

1 stop18h 15m

£465

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 25/12

09:00-16:30

1 stop15h 30m

San Francisco

Wed 14/1

19:25-17:50

1 stop14h 25m

£465

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Tue 13/1

17:50-11:50

1 stop26h 00m

San Francisco

Tue 31/3

07:25-09:30

2 stops18h 05m

£465

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 23/4

19:30-14:40

1 stop27h 10m

San Francisco

Sun 10/5

16:45-16:00

1 stop15h 15m

£465

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Tue 10/3

08:10-12:50

2 stops35h 40m

San Francisco

Tue 17/3

16:40-20:15

2 stops20h 35m

£465

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Mon 12/1

17:05-11:50

1 stop26h 45m

San Francisco

Mon 26/1

05:45-08:50

2 stops19h 05m

£466

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 17/2

06:30-15:55

1 stop17h 25m

San Francisco

Wed 25/2

05:10-09:40

1 stop20h 30m

£466

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Wed 22/4

20:40-16:10

1 stop27h 30m

San Francisco

Thu 7/5

17:45-20:00

1 stop18h 15m

£467

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Delays

Stopovers

Other information

What is the cheapest month to fly to San Francisco?

The month of September is, on average, the cheapest month to fly to San Francisco from London, with most prices found around £430. If you are unable to visit San Francisco during the month of September, then departing from London during the month February is also very affordable. Most momondo users find prices during this month for around £435.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart on your flight to San Francisco is on a Thursday when prices can be found for as low as £585. This is often the case because there is less demand to fly during this day of the week. Flights from London to San Francisco on a Sunday will generally be more expensive and average around £684. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to San Francisco?

Our most recent data shows that the best time of day to fly to San Francisco is in the evening. Flights from London to San Francisco during this time can be as low as £482. Try not to purchase tickets at midday because they tend to be around £965. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest London to San Francisco flight route?

Fly from London Heathrow to San Francisco for the best London - San Francisco flight prices

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

You are more likely to see cheaper flights to San Francisco from London when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around £509 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from London for as low as £471 on momondo.

What cabin class options are available on London to San Francisco flights?

There are 4 cabin classes available to choose from on London to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to San Francisco flights?

You could potentially save up to 17% on your flight if you consider stops on a London to San Francisco flight.

How have London to San Francisco flight prices changed over time?

As of December 2025, prices for London to San Francisco flights are approximately 3% more expensive when compared to flights at the same time last year.

When to book flights from London to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from London to San Francisco according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London to San Francisco (LON to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to San Francisco

Best price found	£378
Fastest flight time	11h 00m
Direct flights	Every day
Airports in San Francisco	1 airport

The best one-way flight to San Francisco from London in the past 72 hours is £378. The best return flight deal from London to San Francisco found on momondo in the last 72 hours is £560.

The fastest flight from London to San Francisco takes 11h 00m

Direct flights go from London to San Francisco every day.

There is 1 airport near San Francisco: San Francisco (SFO)

Search flight deals

How far is London to San Francisco by plane?
A flight from London to San Francisco will travel around 5349.7 mi. 11h 00m is a normal flight duration for this route.
When did momondo last update prices for flights from London to San Francisco Airport?
Prices for flights from London to San Francisco Airport are updated daily.
How many operators does momondo search for flights from London to San Francisco Airport?
As of December 2025, there are 18 operators available to choose from for flights from London to San Francisco Airport.
How old do you have to be to fly from London to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to San Francisco?
Based on momondo bookings for flights between London and San Francisco, the leading plane model is Boeing 777, making up 37.93% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 23.25%, Airbus A380-800 with 16.64%, and Boeing 777-300ER with 12.23%.
What is the most popular airline from London to San Francisco?
momondo data reveals that the most frequently booked airline on the route from London to San Francisco is Virgin Atlantic, representing 25% of all bookings. The subsequent popular airlines are British Airways at 18%, Lufthansa at 17%, and United Airlines at 9%.

Best airlines flying from London to San Francisco

Compare and see reviews for airlines that fly from London to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom £239	Free Cancellation	Rating 7.9 8,010 reviews	Search Delta flights
Air Canada	PriceFrom £337	Free Cancellation	Rating 7.1 10,500 reviews	Search Air Canada flights
Aer Lingus	PriceFrom £355	Free Cancellation	Rating 7.2 1,384 reviews	Search Aer Lingus flights
Scandinavian Airlines	PriceFrom £356	Free Cancellation	Rating 7.4 1,592 reviews	Search Scandinavian Airlines flights
United Airlines	PriceFrom £356	Free Cancellation	Rating 7.4 9,066 reviews	Search United Airlines flights
TAP AIR PORTUGAL	PriceFrom £356	Free Cancellation	Rating 7.1 2,081 reviews	Search TAP AIR PORTUGAL flights
SWISS	PriceFrom £360	Free Cancellation	Rating 7.5 1,803 reviews	Search SWISS flights
Finnair	PriceFrom £376	Free Cancellation	Rating 7.6 1,334 reviews	Search Finnair flights
Virgin Atlantic	PriceFrom £378	Free Cancellation	Rating 7.5 675 reviews	Search Virgin Atlantic flights
British Airways	PriceFrom £378	Free Cancellation	Rating 6.7 7,562 reviews	Search British Airways flights

Delta Flights From London to San Francisco
The lowest priced Delta flight from London to San Francisco from the last 72 hours was £239. Generally, Delta has 7 flights on this route every week with an average price of £549. Delta is rated 7.9/10 by our users.
KLM Flights From London to San Francisco
KLM is also a popular choice for this route. KLM flight deals for London to San Francisco start from as low as £381 round-trip, depending on your selected dates, with average KLM deals seen on momondo around £461. KLM operates 7 flights to San Francisco from London in an average week. Users have rated it 7.7/10 across 1,430 reviews.

Santa Clara

Carmel-by-the-Sea

Seaside

Big Sur

Rohnert Park

Campbell

Palo Alto

South San Francisco

Capitola

Santa Cruz

Novato

Sausalito

San Bruno

Woodland

Redwood City

Aptos

Burlingame

Modesto

Pacific Grove

Sunnyvale

Why use momondo?

Why should I use momondo to find a flight deal from London to San Francisco?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from London.

Can I find flights from London to San Francisco with flexible booking policies on momondo?

momondo does allow users to show only those flights to San Francisco from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to San Francisco?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to San Francisco.

I’m not ready to book a flight from London to San Francisco right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of London to San Francisco flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your San Francisco trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sun 4/1

Sun 11/1

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Cheap flights from London to San Francisco from £365

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to San Francisco departing on 17/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from London to San Francisco

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

SWISS flights from London to San Francisco

Our best SWISS deals on London to San Francisco flight tickets

British Airways flights from London to San Francisco

Our best British Airways deals on London to San Francisco flight tickets

momondo Fare Finder

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

See travel insights to San Francisco from

How to get the cheapest flight ticket from London to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Francisco?

What is the cheapest day to depart on your flight to San Francisco?

What is the cheapest time of day to depart on your flight to San Francisco?

What is the cheapest London to San Francisco flight route?

Fly from London Heathrow to San Francisco for the best London - San Francisco flight prices

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

What cabin class options are available on London to San Francisco flights?

There are 4 cabin classes available to choose from on London to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to San Francisco flights?

You could potentially save up to 17% on your flight if you consider stops on a London to San Francisco flight.

How have London to San Francisco flight prices changed over time?

As of December 2025, prices for London to San Francisco flights are approximately 3% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from London to San Francisco?

SWISS, Finnair, and United Airlines are the most popular carriers operating from London to San Francisco

Which airlines fly to San Francisco?

How often are flights from London to San Francisco delayed?

Historically, on average around 13% of flights between London and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 140 minutes.

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

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

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

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

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

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 12% of their flights experiencing any sort of delay.

Which airport is the most popular for stopovers for flights between London and San Francisco?

Copenhagen (CPH) was the most common stop: 31% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from London to San Francisco?

Flights via Zurich (ZRH) offer the lowest average return price of £387.

Which stopover airport has the shortest travel time from London to San Francisco?

Flights connecting via Amsterdam (AMS) have the shortest average one-way travel time: 13h 18m.

Which stopover airport has the shortest connection time from London to San Francisco?

Amsterdam (AMS) has the shortest average stopover time for this route: 1h 06m.

How many flights depart from London to San Francisco on average per day?

The number of flights available between London and San Francisco is 31 per day as of December 2025. The most frequent departure time is 11:00, with 58% of daily flights leaving at midday.

How many flights depart from London to San Francisco on average per week?

The number of flights available between London and San Francisco is 217 per week as of December 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

When to book flights from London to San Francisco

Cheap London to San Francisco (LON to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to San Francisco

Best price found

Fastest flight time

Direct flights

Airports in San Francisco

How far is London to San Francisco by plane?

When did momondo last update prices for flights from London to San Francisco Airport?

How many operators does momondo search for flights from London to San Francisco Airport?

How old do you have to be to fly from London to San Francisco Airport?

What documentation or ID do you need to fly to San Francisco Airport?

What is the most popular plane model from London to San Francisco?

What is the most popular airline from London to San Francisco?

Best airlines flying from London to San Francisco

Compare and see reviews for airlines that fly from London to San Francisco with momondo

Delta Flights From London to San Francisco

KLM Flights From London to San Francisco

Travelling to a place near San Francisco?

Why use momondo?

Why should I use momondo to find a flight deal from London to San Francisco?