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 week?

As of August 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.

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 August 2025. The most frequent departure time is 10:00AM, with 57% of daily flights leaving in the afternoon.

What airlines fly to San Francisco?

British Airways, United Airlines and Lufthansa 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 39% 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: 1h 34m.

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

Lisbon (LIS) was the most common stop: 38% of momondo users choosing 1-stop flights on this route connected there.

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

Flights connecting via Copenhagen (CPH) have the shortest average one-way travel time: 14h 10m.

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

Aer Lingus, TAP AIR PORTUGAL, and Scandinavian Airlines are the most popular carriers operating from London to San Francisco

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 August 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.

$480 Cheap Flights from London to San Francisco in 2025

Q: What is the typical price of a round-trip flight between London and San Francisco?

Prices are currently low for flights on this route. Typical prices usually range from $659 to $1,041. The lowest price recently found on this route was $560.

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Find the cheapest flights from London to San Francisco

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

8:40 am - 4:10 pmLHR-SFO

15h 30m1 stop

1:05 pm - 7:25 amSFO-LHR

10h 20mnonstop

$560United Airlines

Find Deal

Wed, Sep 17 - Sun, Sep 21

7:40 am - 3:55 pmLHR-SFO

16h 15m1 stop

5:40 pm - 6:55 pmSFO-LHR

17h 15m1 stop

$561Aer Lingus

Find Deal

Sat, Sep 27 - Mon, Sep 29

9:30 am - 3:55 pmLHR-SFO

14h 25m1 stop

7:55 pm - 2:10 pmSFO-LHR

10h 15mnonstop

$565Lufthansa

Find Deal

Sat, Aug 30 - Mon, Sep 15

10:45 am - 1:50 pmLHR-SFO

11h 05mnonstop

4:30 pm - 10:55 amSFO-LHR

10h 25mnonstop

$570British Airways

Find Deal

Sun, Sep 21 - Tue, Sep 30

10:45 am - 1:50 pmLHR-SFO

11h 05mnonstop

4:30 pm - 10:55 amSFO-LHR

10h 25mnonstop

$575British Airways

Find Deal

Thu, Sep 11 - Tue, Sep 16

10:35 am - 1:40 pmLHR-SFO

11h 05mnonstop

12:50 pm - 7:25 amSFO-LHR

10h 35mnonstop

$584Lufthansa

Find Deal

Sun, Sep 14 - Sun, Nov 23

4:25 pm - 7:30 pmLHR-SFO

11h 05mnonstop

4:05 pm - 10:25 amSFO-LHR

10h 20mnonstop

$593Virgin Atlantic

Find Deal

Sat, Sep 27 - Mon, Sep 29

6:30 am - 11:45 amLHR-SFO

13h 15m1 stop

8:55 am - 4:50 pmSFO-LHR

23h 55m1 stop

$601Delta

Find Deal

Sat, Aug 30 - Sun, Dec 14

6:30 am - 11:45 amLHR-SFO

13h 15m1 stop

9:30 pm - 9:00 amSFO-LHR

27h 30m1 stop

$606Delta

Find Deal

Sun, Aug 31 - Sun, Dec 14

8:40 am - 11:09 pmLCY-SFO

22h 29m2 stops

1:45 pm - 5:20 pmSFO-LCY

19h 35m2 stops

$625Virgin Atlantic

Find Deal

Thu, Sep 11 - Tue, Sep 23

United Airlines flights from London to San Francisco

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

United Airlines

Sep 17

LHR8:40 amLondon Heathrow

15h 30m

1 stop

SFO4:10 pmSan Francisco

Sep 21

SFO1:05 pmSan Francisco

10h 20m

LHR7:25 amLondon Heathrow

$560

Find similar

United Airlines

Sep 9

LHR7:25 amLondon Heathrow

15h 05m

1 stop

SFO2:30 pmSan Francisco

Sep 16

SFO9:10 amSan Francisco

14h 30m

1 stop

LHR7:40 amLondon Heathrow

$562

Find similar

United Airlines

Sep 1

LHR7:25 amLondon Heathrow

15h 05m

1 stop

SFO2:30 pmSan Francisco

Sep 14

SFO7:55 pmSan Francisco

10h 15m

LHR2:10 pmLondon Heathrow

$563

Find similar

SWISS flights from London to San Francisco

Our best SWISS deals on London to San Francisco flight tickets

SWISS

Jan 17

LCY12:20 pmLondon City

36h 10m

1 stop

SFO4:30 pmSan Francisco

Jan 24

SFO7:25 pmSan Francisco

13h 40m

1 stop

LCY5:05 pmLondon City

$561

Find similar

SWISS

Sep 18

LCY9:25 amLondon City

14h 45m

1 stop

SFO4:10 pmSan Francisco

Sep 23

SFO7:30 pmSan Francisco

29h 20m

1 stop

LCY8:50 amLondon City

$565

Find similar

SWISS

Sep 10

LGW6:35 pmLondon Gatwick

29h 35m

1 stop

SFO4:10 pmSan Francisco

Sep 23

SFO7:30 pmSan Francisco

14h 20m

1 stop

LGW5:50 pmLondon Gatwick

$568

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 9/17

8:40 am-4:10 pm

1 stop15h 30m

San Francisco

Sun 9/21

1:05 pm-7:25 am

Nonstop10h 20m

$560

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 9/27

7:40 am-3:55 pm

1 stop16h 15m

San Francisco

Mon 9/29

5:40 pm-6:55 pm

1 stop17h 15m

$561

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 8/30

9:30 am-3:55 pm

1 stop14h 25m

San Francisco

Mon 9/15

7:55 pm-2:10 pm

Nonstop10h 15m

$565

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 9/21

10:45 am-1:50 pm

Nonstop11h 05m

San Francisco

Tue 9/30

4:30 pm-10:55 am

Nonstop10h 25m

$570

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 9/11

10:45 am-1:50 pm

Nonstop11h 05m

San Francisco

Tue 9/16

4:30 pm-10:55 am

Nonstop10h 25m

$575

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 9/14

10:35 am-1:40 pm

Nonstop11h 05m

San Francisco

Sun 11/23

12:50 pm-7:25 am

Nonstop10h 35m

$584

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 9/27

4:25 pm-7:30 pm

Nonstop11h 05m

San Francisco

Mon 9/29

4:05 pm-10:25 am

Nonstop10h 20m

$593

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 8/30

6:30 am-11:45 am

1 stop13h 15m

San Francisco

Sun 12/14

8:55 am-4:50 pm

1 stop23h 55m

$601

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 8/31

6:30 am-11:45 am

1 stop13h 15m

San Francisco

Sun 12/14

9:30 pm-9:00 am

1 stop27h 30m

$606

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Thu 9/11

8:40 am-11:09 pm

2 stops22h 29m

San Francisco

Tue 9/23

1:45 pm-5:20 pm

2 stops19h 35m

$625

Flights are sorted by cheapest round-trip flights first.

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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 typical price of a round-trip flight between London and San Francisco?

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 $633. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $752.

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 $720.

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 $674 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 August 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 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	$571
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 $571. The best round-trip 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. 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 August 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 37.66% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 28.91%, Airbus A380-800 with 12.00%, and Boeing 777-300ER with 7.87%.
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 Delta 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 $508	Free Cancellation	Rating 6.7 7,283 reviews	Search British Airways flights
United Airlines	PriceFrom $540	Free Cancellation	Rating 7.4 8,922 reviews	Search United Airlines flights
Brussels Airlines	PriceFrom $546	Free Cancellation	Rating 7.3 350 reviews	Search Brussels Airlines flights
Virgin Atlantic	PriceFrom $550	Free Cancellation	Rating 7.4 657 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $555	Free Cancellation	Rating 7.9 7,981 reviews	Search Delta flights
Austrian Airlines	PriceFrom $564	Free Cancellation	Rating 7.6 829 reviews	Search Austrian Airlines flights
Scandinavian Airlines	PriceFrom $577	Free Cancellation	Rating 7.4 1,470 reviews	Search Scandinavian Airlines flights
Lufthansa	PriceFrom $579	Free Cancellation	Rating 6.8 7,334 reviews	Search Lufthansa flights
American Airlines	PriceFrom $594	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Iberia	PriceFrom $596	Free Cancellation	Rating 7.0 2,885 reviews	Search Iberia flights

Delta Flights From London to San Francisco
Delta flies from London to San Francisco around 14 times per week, with 7,981 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
$564 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 $734, however, with flight time and availability significantly affecting the price. Austrian Airlines (7.6/10 from 829 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.

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Cheap flights from London to San Francisco from $560

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from London to San Francisco departing on 9/17. 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 and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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Price Alerts

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Find the cheapest flights from London to San Francisco

Cheap round-trip flights

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Cheap last minute flights

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United Airlines flights from London to San Francisco

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

SWISS flights from London to San Francisco

Our best SWISS 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 typical price of a round-trip flight between London and San Francisco?

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 $633. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $752.

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 $720.

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 August 2025, prices for London to San Francisco flights are approximately 59% more expensive when compared to flights at the same time last year.

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

Aer Lingus, TAP AIR PORTUGAL, and Scandinavian Airlines 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?

Lisbon (LIS) was the most common stop: 38% 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 Copenhagen (CPH) have the shortest average one-way travel time: 14h 10m.

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

Copenhagen (CPH) has the shortest average layover time for this route: 1h 34m.

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 August 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 August 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