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

As of September 2025, 288 flights take off from London and land in San Francisco each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.

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

Flights via Copenhagen (CPH) offer the lowest average round-trip price of $577.

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

The number of flights available between London and San Francisco is 41 per day as of September 2025. The most frequent departure time is 10:00AM, with 57% of daily flights leaving in the afternoon.

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

Copenhagen (CPH) was the most common stop: 44% of momondo users choosing 1-stop flights on this route connected there.

What airlines fly to San Francisco?

British Airways, United Airlines and Iberia are the top three most popular airlines that fly to San Francisco from London according to our data. British Airways is the first choice among our users, with 40% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 10 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

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

Copenhagen (CPH) has the shortest average layover time for this route: 2h 04m.

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

British Airways, JetBlue, and TAP AIR PORTUGAL are the most popular carriers operating from London to San Francisco

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

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 14h 40m.

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

Prices for flights from London to San Francisco Airport are refreshed on a daily basis.

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

There are 10 operators available for flights from London to San Francisco Airport as of September 2025.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to San Francisco Airport.

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

The required travel and health documents for your San Francisco Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Francisco Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$388 Cheap Flights from London to San Francisco in 2025

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Find the cheapest flights from London to San Francisco

Round-trip

One-way

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Cheap round-trip flights

12:20 pm - 3:25 pmLHR-SFO

11h 05mnonstop

8:35 am - 9:40 amSFO-LHR

17h 05m1 stop

$534United Airlines

Find Deal

Thu, Sep 18 - Wed, Oct 1

10:55 am - 11:29 pmLHR-SFO

20h 34m2 stops

4:44 pm - 2:15 pmSFO-LHR

13h 31m1 stop

$538Virgin Atlantic

Find Deal

Sat, Sep 27 - Mon, Sep 29

7:40 pm - 2:16 pmLGW-SFO

26h 36m2 stops

10:40 am - 7:00 pmSFO-LGW

24h 20m2 stops

$543British Airways

Find Deal

Mon, Jan 19 - Tue, Jan 27

11:15 am - 2:15 pmLHR-SFO

11h 00mnonstop

4:05 pm - 10:25 amSFO-LHR

10h 20mnonstop

$544Delta

Find Deal

Fri, Oct 3 - Tue, Oct 7

4:25 pm - 7:30 pmLHR-SFO

11h 05mnonstop

9:20 pm - 3:40 pmSFO-LHR

10h 20mnonstop

$545Delta

Find Deal

Mon, Oct 6 - Wed, Oct 22

10:45 am - 1:50 pmLHR-SFO

11h 05mnonstop

8:40 pm - 3:10 pmSFO-LHR

10h 30mnonstop

$549American Airlines

Find Deal

Wed, Sep 24 - Sun, Nov 30

3:05 pm - 11:59 pmLGW-SFO

16h 54m1 stop

10:22 am - 8:10 amSFO-LGW

13h 48m1 stop

$549American Airlines

Find Deal

Wed, Sep 24 - Wed, Oct 1

8:40 pm - 10:30 pmLGW-SFO

33h 50m2 stops

10:53 pm - 8:10 amSFO-LGW

25h 17m1 stop

$550British Airways

Find Deal

Wed, Oct 8 - Mon, Oct 20

6:30 am - 12:40 pmLHR-SFO

14h 10m1 stop

12:50 pm - 7:25 amSFO-LHR

10h 35mnonstop

$559Lufthansa

Find Deal

Mon, Dec 8 - Thu, Jan 8

9:30 am - 4:00 pmLHR-SFO

14h 30m1 stop

12:50 pm - 7:25 amSFO-LHR

10h 35mnonstop

$560Lufthansa

Find Deal

Tue, Oct 21 - Mon, Nov 3

Virgin Atlantic flights from London to San Francisco

Our best Virgin Atlantic deals on London to San Francisco flight tickets

Virgin Atlantic

Sep 27

LHR10:55 amLondon Heathrow

20h 34m

2 stops

SFO11:29 pmSan Francisco

Sep 29

SFO4:44 pmSan Francisco

13h 31m

1 stop

LHR2:15 pmLondon Heathrow

$538

Find similar

Virgin Atlantic

Sep 29

LHR5:25 pmLondon Heathrow

14h 04m

1 stop

SFO11:29 pmSan Francisco

Oct 14

SFO9:20 pmSan Francisco

10h 20m

LHR3:40 pmLondon Heathrow

$539

Find similar

Virgin Atlantic

Sep 15

LHR11:15 amLondon Heathrow

11h 00m

SFO2:15 pmSan Francisco

Sep 26

SFO1:15 pmSan Francisco

14h 10m

1 stop

LHR11:25 amLondon Heathrow

$556

Find similar

Air Canada flights from London to San Francisco

Our best Air Canada deals on London to San Francisco flight tickets

Air Canada

Sep 21

LHR2:05 pmLondon Heathrow

15h 35m

1 stop

SFO9:40 pmSan Francisco

Sep 30

SFO9:58 amSan Francisco

15h 37m

2 stops

LHR9:35 amLondon Heathrow

$541

Find similar

Air Canada

Sep 18

LHR8:40 amLondon Heathrow

19h 11m

2 stops

SFO7:51 pmSan Francisco

Oct 1

SFO11:40 amSan Francisco

13h 55m

1 stop

LHR9:35 amLondon Heathrow

$542

Find similar

Air Canada

Nov 1

LHR1:00 pmLondon Heathrow

15h 34m

1 stop

SFO9:34 pmSan Francisco

Nov 8

SFO11:28 pmSan Francisco

23h 02m

1 stop

LHR6:30 amLondon Heathrow

$546

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 9/18

12:20 pm-3:25 pm

Nonstop11h 05m

San Francisco

Wed 10/1

8:35 am-9:40 am

1 stop17h 05m

$534

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 9/27

10:55 am-11:29 pm

2 stops20h 34m

San Francisco

Mon 9/29

4:44 pm-2:15 pm

1 stop13h 31m

$538

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Mon 1/19

7:40 pm-2:16 pm

2 stops26h 36m

San Francisco

Tue 1/27

10:40 am-7:00 pm

2 stops24h 20m

$543

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 10/3

11:15 am-2:15 pm

Nonstop11h 00m

San Francisco

Tue 10/7

4:05 pm-10:25 am

Nonstop10h 20m

$544

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 10/6

4:25 pm-7:30 pm

Nonstop11h 05m

San Francisco

Wed 10/22

9:20 pm-3:40 pm

Nonstop10h 20m

$545

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 9/24

10:45 am-1:50 pm

Nonstop11h 05m

San Francisco

Sun 11/30

8:40 pm-3:10 pm

Nonstop10h 30m

$549

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Wed 9/24

3:05 pm-11:59 pm

1 stop16h 54m

San Francisco

Wed 10/1

10:22 am-8:10 am

1 stop13h 48m

$549

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Wed 10/8

8:40 pm-10:30 pm

2 stops33h 50m

San Francisco

Mon 10/20

10:53 pm-8:10 am

1 stop25h 17m

$550

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 12/8

6:30 am-12:40 pm

1 stop14h 10m

San Francisco

Thu 1/8

12:50 pm-7:25 am

Nonstop10h 35m

$559

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 10/21

9:30 am-4:00 pm

1 stop14h 30m

San Francisco

Mon 11/3

12:50 pm-7:25 am

Nonstop10h 35m

$560

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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

Layovers

Other information

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $589.

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

The cheapest day to depart from London to San Francisco is on a Thursday when prices can be found for as low as $640. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $750.

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

Our data shows that the cheapest London to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $682. Flights in the morning are often more expensive with an average ticket price of $718.

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 $673 when searching weeks out. 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 $615 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.

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

As of September 2025, prices for London to San Francisco flights are approximately 72% 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 round-trip 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	$622
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 $622. The best round-trip flight deal from London to San Francisco found on momondo in the last 72 hours is $619.

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. In terms of flight time, this usually takes a little over 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 are refreshed on a daily basis.
How many operators does momondo search for flights from London to San Francisco Airport?
There are 10 operators available for flights from London to San Francisco Airport as of September 2025.
How old do you have to be to fly from London to San Francisco Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The required travel and health documents for your San Francisco Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Francisco Airport. We recommend that you seek guidance from your airline or a reliable 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 39.37% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 27.00%, Airbus A380-800 with 11.35%, and Boeing 777-300ER with 9.00%.
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 British Airways, representing 23% of all bookings. The subsequent popular airlines are United Airlines at 21%, Lufthansa at 11%, and Austrian Airlines at 8%.

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
British Airways	PriceFrom $507	Free Cancellation	Rating 6.6 7,361 reviews	Search British Airways flights
United Airlines	PriceFrom $539	Free Cancellation	Rating 7.4 8,937 reviews	Search United Airlines flights
Austrian Airlines	PriceFrom $539	Free Cancellation	Rating 7.6 850 reviews	Search Austrian Airlines flights
Brussels Airlines	PriceFrom $546	Free Cancellation	Rating 7.2 359 reviews	Search Brussels Airlines flights
Virgin Atlantic	PriceFrom $550	Free Cancellation	Rating 7.4 664 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $555	Free Cancellation	Rating 7.9 7,960 reviews	Search Delta flights
Scandinavian Airlines	PriceFrom $578	Free Cancellation	Rating 7.4 1,484 reviews	Search Scandinavian Airlines flights
Lufthansa	PriceFrom $579	Free Cancellation	Rating 6.8 7,409 reviews	Search Lufthansa flights
American Airlines	PriceFrom $596	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Iberia	PriceFrom $596	Free Cancellation	Rating 7.0 2,929 reviews	Search Iberia flights

Delta Flights From London to San Francisco
Delta flies from London to San Francisco around 14 times per week, with 7,960 momondo users rating the airline 7.9/10. The cheapest Delta deal from London to San Francisco in the last 72 hours was $555 (round-trip), much lower than the average airfare cost of $708 for Delta flights on this route.
Austrian Airlines Flights From London to San Francisco
$539 is the best Austrian Airlines flight deal from London to San Francisco found on momondo over the last 72 hours. The average Austrian Airlines ticket price found was closer to $736, however, with flight time and availability significantly affecting the price. Austrian Airlines (7.6/10 from 850 user reviews) flies into San Francisco from London 21 times in an average week so prices can vary.

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Why use momondo?

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

It is quick and easy to find London to San Francisco flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Francisco that suits you.

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

Yes. momondo enables you to select and highlight flights to San Francisco from London with this policy.

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 not ready to book a flight from London to San Francisco now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to San Francisco and let you know when they change.

An easier way to manage your San Francisco trip

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

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Cheap flights from London to San Francisco from $470

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 12/15. 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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Filter for what you want

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Cheap round-trip flights

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Virgin Atlantic flights from London to San Francisco

Our best Virgin Atlantic deals on London to San Francisco flight tickets

Air Canada flights from London to San Francisco

Our best Air Canada deals on London to San Francisco flight tickets

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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?

If you aren’t able to travel to San Francisco during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $589.

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

The cheapest day to depart from London to San Francisco is on a Thursday when prices can be found for as low as $640. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $750.

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

Our data shows that the cheapest London to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $682. Flights in the morning are often more expensive with an average ticket price of $718.

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.

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

As of September 2025, prices for London to San Francisco flights are approximately 72% more expensive when compared to flights at the same time last year.

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

British Airways, JetBlue, and TAP AIR PORTUGAL are the most popular carriers operating from London to San Francisco

What airlines fly to San Francisco?

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

Copenhagen (CPH) was the most common stop: 44% of momondo users choosing 1-stop flights on this route connected there.

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

Flights via Copenhagen (CPH) offer the lowest average round-trip price of $577.

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

Flights connecting via Dublin (DUB) have the shortest average one-way travel time: 14h 40m.

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

Copenhagen (CPH) has the shortest average layover time for this route: 2h 04m.

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

The number of flights available between London and San Francisco is 41 per day as of September 2025. The most frequent departure time is 10:00AM, with 57% of daily flights leaving in the afternoon.

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

As of September 2025, 288 flights take off from London and land in San Francisco each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off 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

Austrian Airlines Flights From London to San Francisco

Traveling to a place near San Francisco?

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize 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.