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

As of September 2025, there are 42 flights per day flying from London to San Francisco. The most common time of day flights depart is 10:00, with 57% of flights taking off in the afternoon.

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

KLM, Delta, and British Airways are the most popular carriers operating from London to San Francisco

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

As of September 2025, there are 294 flights per week flying from London to San Francisco. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

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

Prices for flights from London to San Francisco Airport were last updated today.

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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 licence 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.

€398 Cheap Flights from London to San Francisco in 2025/26

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Find the cheapest flights from London to San Francisco

Round-trip

One-way

Last minute

Direct

Cheap return flights

20:05 - 17:30LHR-SFO

28h 25m1 stop

19:25 - 08:15SFO-LHR

28h 50m2 stops

€452SWISS

Find Deal

Thu, 30 Oct - Thu, 6 Nov

09:55 - 00:05LHR-SFO

22h 10m2 stops

16:30 - 10:40SFO-LHR

10h 10mdirect

€454Delta

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Thu, 9 Oct - Mon, 2 Mar

16:15 - 19:20LHR-SFO

11h 05mdirect

23:45 - 06:30SFO-LHR

22h 45m1 stop

€455United Airlines

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Sat, 27 Sep - Sat, 11 Oct

10:35 - 13:40LHR-SFO

11h 05mdirect

16:35 - 13:20SFO-LHR

12h 45m1 stop

€456United Airlines

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Fri, 3 Oct - Fri, 17 Oct

10:05 - 13:20LHR-SFO

11h 15mdirect

17:25 - 12:00SFO-LHR

10h 35mdirect

€457United Airlines

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Sat, 21 Feb - Sun, 1 Mar

19:05 - 09:24LHR-SFO

22h 19m1 stop

08:00 - 09:25SFO-LHR

17h 25m1 stop

€471British Airways

Find Deal

Sun, 28 Sep - Thu, 9 Oct

06:30 - 12:40LHR-SFO

14h 10m1 stop

16:20 - 13:30SFO-LHR

13h 10m1 stop

€478Lufthansa

Find Deal

Sun, 14 Dec - Sun, 18 Jan

10:35 - 13:40LHR-SFO

11h 05mdirect

08:25 - 06:20SFO-LHR

13h 55m1 stop

€481

Find Deal

Sat, 27 Sep - Mon, 6 Oct

06:30 - 12:40LHR-SFO

14h 10m1 stop

19:50 - 14:10SFO-LHR

10h 20mdirect

€483Lufthansa

Find Deal

Fri, 26 Sep - Wed, 8 Oct

06:15 - 20:39LHR-SFO

22h 24m2 stops

06:30 - 06:35SFO-LHR

16h 05m1 stop

€491British Airways

Find Deal

Sat, 13 Dec - Wed, 17 Dec

SWISS flights from London to San Francisco

Our best SWISS deals on London to San Francisco flight tickets

SWISS

30 Oct

LHR20:05London Heathrow

28h 25m

1 stop

SFO17:30San Francisco

6 Nov

SFO19:25San Francisco

28h 50m

2 stops

LHR08:15London Heathrow

€452

Find similar

SWISS

21 Sept

LHR06:00London Heathrow

18h 35m

1 stop

SFO16:35San Francisco

4 Oct

SFO19:30San Francisco

18h 00m

2 stops

LHR21:30London Heathrow

€498

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SWISS

19 Sept

LHR08:40London Heathrow

15h 30m

1 stop

SFO16:10San Francisco

30 Sept

SFO19:30San Francisco

15h 50m

1 stop

LHR19:20London Heathrow

€544

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Lufthansa flights from London to San Francisco

Our best Lufthansa deals on London to San Francisco flight tickets

Lufthansa

21 Sept

LHR12:20London Heathrow

11h 05m

SFO15:25San Francisco

4 Oct

SFO13:02San Francisco

13h 38m

1 stop

LHR10:40London Heathrow

€456

Find similar

Lufthansa

14 Dec

LHR06:30London Heathrow

14h 10m

1 stop

SFO12:40San Francisco

18 Jan

SFO16:20San Francisco

13h 10m

1 stop

LHR13:30London Heathrow

€478

Find similar

Lufthansa

20 Sept

LHR16:15London Heathrow

11h 00m

SFO19:15San Francisco

29 Sept

SFO13:02San Francisco

13h 38m

1 stop

LHR10:40London Heathrow

€481

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 30/10

20:05-17:30

1 stop28h 25m

San Francisco

Thu 6/11

19:25-08:15

2 stops28h 50m

€452

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 9/10

09:55-00:05

2 stops22h 10m

San Francisco

Mon 2/3

16:30-10:40

Nonstop10h 10m

€454

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 27/9

16:15-19:20

Nonstop11h 05m

San Francisco

Sat 11/10

23:45-06:30

1 stop22h 45m

€455

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 3/10

10:35-13:40

Nonstop11h 05m

San Francisco

Fri 17/10

16:35-13:20

1 stop12h 45m

€456

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 21/2

10:05-13:20

Nonstop11h 15m

San Francisco

Sun 1/3

17:25-12:00

Nonstop10h 35m

€457

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 28/9

19:05-09:24

1 stop22h 19m

San Francisco

Thu 9/10

08:00-09:25

1 stop17h 25m

€471

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 14/12

06:30-12:40

1 stop14h 10m

San Francisco

Sun 18/1

16:20-13:30

1 stop13h 10m

€478

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 27/9

10:35-13:40

Nonstop11h 05m

San Francisco

Mon 6/10

08:25-06:20

1 stop13h 55m

€481

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 26/9

06:30-12:40

1 stop14h 10m

San Francisco

Wed 8/10

19:50-14:10

Nonstop10h 20m

€483

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 13/12

06:15-20:39

2 stops22h 24m

San Francisco

Wed 17/12

06:30-06:35

1 stop16h 05m

€491

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

Other information

What is the cheapest month to fly to San Francisco?

The cheapest month to fly to San Francisco from London is in February. Flight prices, which tend to average around €481, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to San Francisco from London during September instead. Flights to San Francisco in September, while not as cheap as those in February, still average around €490.

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

On average, the least expensive day to fly to San Francisco from London is on a Saturday. momondo users have found tickets for Saturday departures for as low as €529. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around €734.

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

According to our data, the cheapest time of day to fly to San Francisco is in the morning. momondo users have found flights departing from London to San Francisco in the morning for as low as €534. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are €878 on average. Flights to San Francisco from London in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 €570 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 €527 on momondo.

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

There is only 1 cabin class 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 18% 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 September 2025, prices for London to San Francisco flights are approximately 59% 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

Fastest flight time	11h 00m
Direct flights	Every day
Airports in San Francisco	1 airport

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)

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How far is London to San Francisco by plane?
The straight-line distance from London to San Francisco is 8609.4 km. By plane, this route typically takes 11h 00m.
When did momondo last update prices for flights from London to San Francisco Airport?
Prices for flights from London to San Francisco Airport were last updated today.
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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify 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 licence 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?
momondo data reveals that the most frequently booked plane model on the route from London to San Francisco is Boeing 777, representing 39.85% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 26.10%, Airbus A380-800 at 11.50%, and Boeing 777-300ER at 9.48%.

Santa Cruz

Millbrae

Walnut Creek

Alameda

Menlo Park

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to San Francisco for you.

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

All flight searches from London to San Francisco on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to San Francisco from London.

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

If you are simply researching potential flights to San Francisco, momondo offers a useful price alert feature which will track prices for flights to San Francisco from London and alert you when they change.