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

204 flights are operational weekly from San Francisco to London as of December 2025. The most popular departure day for this route is Tue, with 15% of flights per week taking off on this day.

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

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

How often are flights from San Francisco to London delayed?

Historically, on average around 12% of flights between San Francisco and London have experienced a delay on any given week. The average delay length over the past 12 months has been 156 minutes.

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

KLM, Lufthansa, and United Airlines are the most popular carriers operating from San Francisco to London

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

The number of flights available between San Francisco and London is 29 per day as of December 2025. The most frequent departure time is 17:00, with 80% of daily flights leaving in the afternoon.

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

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

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

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

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

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

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

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 stopovers 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 San Francisco Airport to London.

What documentation or ID do you need to fly to London?

The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$577 Cheap Flights from San Francisco to London in 2025/26

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16:35 - 18:50

SFO

LHR

18h 15m1 stop

19:50 - 14:35

LHR

SFO

26h 45m1 stop

$895TAP AIR PORTUGAL

Tue, 12 May - Tue, 9 Jun

16:40 - 21:35

SFO

LHR

20h 55m2 stops

06:40 - 14:35

LHR

SFO

15h 55m1 stop

$897Scandinavian Airlines

Mon, 26 Jan - Fri, 30 Jan

17:40 - 18:50

SFO

LHR

18h 10m2 stops

15:35 - 15:35

LHR

SFO

31h 00m2 stops

$898Scandinavian Airlines

Sat, 14 Mar - Sat, 21 Mar

17:40 - 18:50

SFO

LHR

18h 10m2 stops

15:35 - 15:35

LHR

SFO

31h 00m2 stops

$900Scandinavian Airlines

Sat, 14 Mar - Sat, 21 Mar

16:40 - 18:30

SFO

LHR

17h 50m1 stop

19:50 - 14:40

LHR

SFO

26h 50m2 stops

$904Scandinavian Airlines

Tue, 3 Mar - Thu, 16 Apr

15:10 - 16:00

SFO

LHR

16h 50m1 stop

19:30 - 14:35

LHR

SFO

27h 05m1 stop

$906Scandinavian Airlines

Thu, 29 Jan - Fri, 13 Feb

16:40 - 18:30

SFO

LHR

17h 50m1 stop

19:50 - 14:35

LHR

SFO

26h 45m2 stops

$907Scandinavian Airlines

Thu, 15 Jan - Sun, 25 Jan

12:50 - 07:25

SFO

LHR

10h 35mdirect

11:10 - 19:35

LHR

SFO

16h 25m1 stop

$909United Airlines

Tue, 30 Dec - Tue, 13 Jan

17:25 - 12:00

SFO

LHR

10h 35mdirect

09:00 - 16:30

LHR

SFO

15h 30m1 stop

$910United Airlines

Wed, 31 Dec - Tue, 3 Feb

16:30 - 10:40

SFO

LHR

10h 10mdirect

06:30 - 11:50

LHR

SFO

13h 20m1 stop

$912KLM

Wed, 31 Dec - Thu, 15 Jan

Scandinavian Airlines flights from San Francisco to London

Our best Scandinavian Airlines deals on San Francisco to London flight tickets

Scandinavian Airlines

26 Jan

SFO16:40San Francisco

20h 55m

2 stops

LHR21:35London Heathrow

30 Jan

LHR06:40London Heathrow

15h 55m

1 stop

SFO14:35San Francisco

$897

Find similar

Scandinavian Airlines

14 Mar

SFO17:40San Francisco

18h 10m

2 stops

LHR18:50London Heathrow

21 Mar

LHR15:35London Heathrow

31h 00m

2 stops

SFO15:35San Francisco

$898

Find similar

Scandinavian Airlines

14 Mar

SFO17:40San Francisco

18h 10m

2 stops

LHR18:50London Heathrow

21 Mar

LHR15:35London Heathrow

31h 00m

2 stops

SFO15:35San Francisco

$900

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United Airlines flights from San Francisco to London

Our best United Airlines deals on San Francisco to London flight tickets

United Airlines

30 Dec

SFO12:50San Francisco

10h 35m

LHR07:25London Heathrow

18 Feb

LHR09:00London Heathrow

15h 30m

1 stop

SFO16:30San Francisco

$909

Find similar

United Airlines

31 Dec

SFO17:25San Francisco

10h 35m

LHR12:00London Heathrow

3 Feb

LHR09:00London Heathrow

15h 30m

1 stop

SFO16:30San Francisco

$910

Find similar

United Airlines

30 Dec

SFO08:25San Francisco

14h 45m

1 stop

LHR07:10London Heathrow

17 Feb

LHR06:35London Heathrow

21h 00m

1 stop

SFO19:35San Francisco

$913

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Fly from

Fly to

Route

Depart

Return

Price

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 12/5

16:35-18:50

1 stop18h 15m

London Heathrow

Tue 9/6

19:50-14:35

1 stop26h 45m

$895

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 26/1

16:40-21:35

2 stops20h 55m

London Heathrow

Fri 30/1

06:40-14:35

1 stop15h 55m

$897

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sat 14/3

17:40-18:50

2 stops18h 10m

London Heathrow

Sat 21/3

15:35-15:35

2 stops31h 00m

$898

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sat 14/3

17:40-18:50

2 stops18h 10m

London Heathrow

Sat 21/3

15:35-15:35

2 stops31h 00m

$900

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 3/3

16:40-18:30

1 stop17h 50m

London Heathrow

Thu 16/4

19:50-14:40

2 stops26h 50m

$904

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 29/1

15:10-16:00

1 stop16h 50m

London Heathrow

Fri 13/2

19:30-14:35

1 stop27h 05m

$906

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 15/1

16:40-18:30

1 stop17h 50m

London Heathrow

Sun 25/1

19:50-14:35

2 stops26h 45m

$907

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 30/12

12:50-07:25

Nonstop10h 35m

London Heathrow

Tue 13/1

11:10-19:35

1 stop16h 25m

$909

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 31/12

17:25-12:00

Nonstop10h 35m

London Heathrow

Tue 3/2

09:00-16:30

1 stop15h 30m

$910

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 31/12

16:30-10:40

Nonstop10h 10m

London Heathrow

Thu 15/1

06:30-11:50

1 stop13h 20m

$912

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

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

Other information

What is the cheapest month to fly to London?

If you aren’t able to travel during the month of September, then book flights to London from San Francisco during January instead. Flights to London in January, while not as cheap as those in September, still average around $999.

What is the cheapest day to depart on your flight to London?

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as $985. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to London for around $1,082.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as $1,047. In contrast, the most expensive time of day to depart to London is in the afternoon when prices are around $1,185.

What is the cheapest San Francisco to London flight route?

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

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

You are more likely to see cheaper flights to London from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $1,153 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from San Francisco for as low as $1,070 on momondo.

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

There are 3 cabin classes available to choose from on San Francisco to London 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 San Francisco to London flights?

You could potentially save up to 13% on your flight if you consider stops on a San Francisco to London flight.

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

As of December 2025, prices for San Francisco to London flights are approximately 35% more expensive when compared to flights at the same time last year.

When to book flights from San Francisco to London

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

Estimated return price

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

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

Best price found	$1,848
Fastest flight time	10h 35m
Direct flights	Every day
Airports in London	6 airports

The best flight deal from San Francisco to London found on momondo in the last 72 hours is $1,848

The fastest flight from San Francisco to London takes 10h 35m

Direct flights go from San Francisco to London every day.

There are 6 airports in London. From San Francisco there are direct flights to London Heathrow (LHR).

Search flight deals

How far is San Francisco to London by plane?
London is 8609.4 km away from San Francisco. By plane, this route typically takes 10h 35m.
When did momondo last update prices for flights from San Francisco Airport to London?
Prices for flights from San Francisco Airport to London are updated daily.
How old do you have to be to fly from San Francisco Airport to London?
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 stopovers 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 San Francisco Airport to London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from San Francisco to London?
momondo data reveals that the most frequently booked plane model on the route from San Francisco to London is Boeing 777, representing 36.74% of all bookings. The subsequent popular models are Airbus A380-800 at 21.73%, Boeing 787-9 Dreamliner at 18.86%, and Airbus A380 at 6.59%.

Gatwick

Hounslow

Wembley

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Brentford

Deal

Dover

Ipswich

Abingdon

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Slough

Chichester

Canterbury

Kingston upon Thames

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Watford

Ashford

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from San Francisco to London. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for San Francisco to London flights to just show those with flexible booking policies.

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

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 San Francisco to London.

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

Yes momondo offers price alerts on flights to London from San Francisco. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Cheap flights from San Francisco to London from $577

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to London departing on 30/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

What is the cheapest month to fly to London?

If you aren’t able to travel during the month of September, then book flights to London from San Francisco during January instead. Flights to London in January, while not as cheap as those in September, still average around $999.

What is the cheapest day to depart on your flight to London?

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as $985. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to London for around $1,082.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as $1,047. In contrast, the most expensive time of day to depart to London is in the afternoon when prices are around $1,185.

What is the cheapest San Francisco to London flight route?

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

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

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

There are 3 cabin classes available to choose from on San Francisco to London 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 San Francisco to London flights?

You could potentially save up to 13% on your flight if you consider stops on a San Francisco to London flight.

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

As of December 2025, prices for San Francisco to London flights are approximately 35% more expensive when compared to flights at the same time last year.

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

KLM, Lufthansa, and United Airlines are the most popular carriers operating from San Francisco to London

How often are flights from San Francisco to London delayed?

Historically, on average around 12% of flights between San Francisco and London have experienced a delay on any given week. The average delay length over the past 12 months has been 156 minutes.

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

Generally, flights departing at night tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

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

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

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

According to our data, Virgin Atlantic have had the fewest delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

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

The number of flights available between San Francisco and London is 29 per day as of December 2025. The most frequent departure time is 17:00, with 80% of daily flights leaving in the afternoon.

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

204 flights are operational weekly from San Francisco to London as of December 2025. The most popular departure day for this route is Tue, with 15% of flights per week taking off on this day.

When to book flights from San Francisco to London

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

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

Best price found

Fastest flight time

Direct flights

Airports in London

How far is San Francisco to London by plane?

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

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

What documentation or ID do you need to fly to London?

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

Travelling to a place near London?

Why use momondo?

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

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

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

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

An easier way to manage your London 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.

Get notified when prices go down

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

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 49.5 km from London