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 November 2025, 217 flights take off from London and land in San Francisco each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

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

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

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.

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.

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 November 2025. The most frequent departure time is 11:00AM, with 59% of daily flights leaving at noon.

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 40% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 12 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

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.

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 12 operators available for flights from London to San Francisco Airport as of November 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.

$464 Cheap Flights from London to San Francisco in 2025/26

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

Prices are currently typical for flights on this route. Typical prices usually range from $523 to $709. The lowest price recently found on this route was $541.

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7:55 pm - 2:35 pmLHR-SFO

26h 40m1 stop

4:35 pm - 10:40 pmSFO-LHR

22h 05m1 stop

$541TAP AIR PORTUGAL

Find Deal

Sun, Dec 7 - Wed, Jan 14

6:00 am - 4:05 pmLHR-SFO

18h 05m1 stop

4:35 pm - 5:30 pmSFO-LHR

16h 55m1 stop

$544TAP AIR PORTUGAL

Find Deal

Fri, Feb 27 - Sat, Mar 7

6:40 am - 2:35 pmLHR-SFO

15h 55m1 stop

4:40 pm - 4:00 pmSFO-LHR

15h 20m1 stop

$545Scandinavian Airlines

Find Deal

Thu, Jan 15 - Mon, Feb 16

5:00 pm - 2:35 pmLHR-SFO

29h 35m1 stop

4:40 pm - 5:40 pmSFO-LHR

17h 00m1 stop

$547Scandinavian Airlines

Find Deal

Wed, Jan 14 - Sun, Jan 18

7:50 pm - 2:35 pmLHR-SFO

26h 45m2 stops

4:40 pm - 4:00 pmSFO-LHR

15h 20m1 stop

$548Scandinavian Airlines

Find Deal

Thu, Jan 15 - Mon, Feb 16

1:00 pm - 1:29 pmLGW-SFO

32h 29m2 stops

10:20 pm - 6:00 amSFO-LGW

23h 40m1 stop

$558Multiple Airlines

Find Deal

Tue, Jan 13 - Sun, Jan 25

6:50 pm - 2:35 pmSTN-SFO

27h 45m2 stops

4:40 pm - 6:35 pmSFO-STN

17h 55m2 stops

$580Multiple Airlines

Find Deal

Wed, Jan 21 - Sun, Jan 25

9:15 am - 4:30 pmLCY-SFO

15h 15m1 stop

7:25 pm - 5:05 pmSFO-LCY

13h 40m1 stop

$618SWISS

Find Deal

Mon, Jan 19 - Wed, Jan 28

8:40 am - 8:28 pmLCY-SFO

19h 48m2 stops

5:55 am - 9:10 amSFO-LCY

19h 15m2 stops

$653Virgin Atlantic

Find Deal

Wed, Dec 10 - Wed, Dec 31

9:20 am - 4:30 pmLCY-SFO

15h 10m1 stop

7:25 pm - 5:10 pmSFO-LCY

13h 45m1 stop

$657SWISS

Find Deal

Wed, Jan 14 - Sun, Jan 18

Scandinavian Airlines flights from London to San Francisco

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

Scandinavian Airlines

Jan 15

LHR6:40 amLondon Heathrow

15h 55m

1 stop

SFO2:35 pmSan Francisco

Feb 16

SFO4:40 pmSan Francisco

15h 20m

1 stop

LHR4:00 pmLondon Heathrow

$545

Find similar

Scandinavian Airlines

Jan 14

LHR5:00 pmLondon Heathrow

29h 35m

1 stop

SFO2:35 pmSan Francisco

Jan 18

SFO4:40 pmSan Francisco

17h 00m

1 stop

LHR5:40 pmLondon Heathrow

$547

Find similar

Scandinavian Airlines

Jan 15

LHR7:50 pmLondon Heathrow

26h 45m

2 stops

SFO2:35 pmSan Francisco

Feb 16

SFO4:40 pmSan Francisco

15h 20m

1 stop

LHR4:00 pmLondon Heathrow

$548

Find similar

SWISS flights from London to San Francisco

Our best SWISS deals on London to San Francisco flight tickets

SWISS

Feb 3

LHR9:00 amLondon Heathrow

15h 30m

1 stop

SFO4:30 pmSan Francisco

Feb 10

SFO7:25 pmSan Francisco

14h 25m

1 stop

LHR5:50 pmLondon Heathrow

$595

Find similar

SWISS

Mar 16

LCY9:15 amLondon City

15h 15m

1 stop

SFO5:30 pmSan Francisco

Mar 23

SFO8:25 pmSan Francisco

13h 40m

1 stop

LCY5:05 pmLondon City

$619

Find similar

SWISS

Feb 16

LGW6:40 pmLondon Gatwick

29h 50m

1 stop

SFO4:30 pmSan Francisco

Feb 26

SFO7:25 pmSan Francisco

14h 25m

1 stop

LGW5:50 pmLondon Gatwick

$620

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 12/7

7:55 pm-2:35 pm

1 stop26h 40m

San Francisco

Wed 1/14

4:35 pm-10:40 pm

1 stop22h 05m

$541

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 2/27

6:00 am-4:05 pm

1 stop18h 05m

San Francisco

Sat 3/7

4:35 pm-5:30 pm

1 stop16h 55m

$544

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 1/15

6:40 am-2:35 pm

1 stop15h 55m

San Francisco

Mon 2/16

4:40 pm-4:00 pm

1 stop15h 20m

$545

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 1/14

5:00 pm-2:35 pm

1 stop29h 35m

San Francisco

Sun 1/18

4:40 pm-5:40 pm

1 stop17h 00m

$547

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 1/15

7:50 pm-2:35 pm

2 stops26h 45m

San Francisco

Mon 2/16

4:40 pm-4:00 pm

1 stop15h 20m

$548

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Tue 1/13

1:00 pm-1:29 pm

2 stops32h 29m

San Francisco

Sun 1/25

10:20 pm-6:00 am

1 stop23h 40m

$558

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Wed 1/21

6:50 pm-2:35 pm

2 stops27h 45m

San Francisco

Sun 1/25

4:40 pm-6:35 pm

2 stops17h 55m

$580

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Mon 1/19

9:15 am-4:30 pm

1 stop15h 15m

San Francisco

Wed 1/28

7:25 pm-5:05 pm

1 stop13h 40m

$618

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Wed 12/10

8:40 am-8:28 pm

2 stops19h 48m

San Francisco

Wed 12/31

5:55 am-9:10 am

2 stops19h 15m

$653

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Wed 1/14

9:20 am-4:30 pm

1 stop15h 10m

San Francisco

Sun 1/18

7:25 pm-5:10 pm

1 stop13h 45m

$657

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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 September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $579.

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 $681. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $748.

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 afternoon are often more expensive with an average ticket price of $727.

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 $677 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 $628 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 November 2025, prices for London to San Francisco flights are approximately 11% 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	$610
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 $610. The best round-trip flight deal from London to San Francisco found on momondo in the last 72 hours is $665.

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 12 operators available for flights from London to San Francisco Airport as of November 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 41.15% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 23.46%, Airbus A380-800 with 13.92%, and Boeing 777-300ER with 11.08%.
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
Finnair	PriceFrom $382	Free Cancellation	Rating 7.6 1,335 reviews	Search Finnair flights
Aer Lingus	PriceFrom $492	Free Cancellation	Rating 7.2 1,370 reviews	Search Aer Lingus flights
British Airways	PriceFrom $513	Free Cancellation	Rating 6.7 7,517 reviews	Search British Airways flights
Scandinavian Airlines	PriceFrom $520	Free Cancellation	Rating 7.4 1,575 reviews	Search Scandinavian Airlines flights
Brussels Airlines	PriceFrom $530	Free Cancellation	Rating 7.2 369 reviews	Search Brussels Airlines flights
Virgin Atlantic	PriceFrom $538	Free Cancellation	Rating 7.5 673 reviews	Search Virgin Atlantic flights
Austrian Airlines	PriceFrom $539	Free Cancellation	Rating 7.6 868 reviews	Search Austrian Airlines flights
United Airlines	PriceFrom $540	Free Cancellation	Rating 7.4 9,017 reviews	Search United Airlines flights
Lufthansa	PriceFrom $545	Free Cancellation	Rating 6.8 7,572 reviews	Search Lufthansa flights
Delta	PriceFrom $555	Free Cancellation	Rating 7.9 8,008 reviews	Search Delta flights

Delta Flights From London to San Francisco
Delta flies from London to San Francisco around 7 times per week, with 8,008 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.
Finnair Flights From London to San Francisco
$382 is the best Finnair flight deal from London to San Francisco found on momondo over the last 72 hours. The average Finnair ticket price found was closer to $581, however, with flight time and availability significantly affecting the price. Finnair (7.6/10 from 1,335 user reviews) flies into San Francisco from London 14 times in an average week so prices can vary.

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Hayward

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Berkeley

Vallejo

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Half Moon Bay

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Turlock

South San Francisco

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 $501

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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Scandinavian Airlines flights from London to San Francisco

Our best Scandinavian 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 September, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $579.

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 $681. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $748.

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 afternoon are often more expensive with an average ticket price of $727.

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 November 2025, prices for London to San Francisco flights are approximately 11% 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, United Airlines, and SWISS 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 31 per day as of November 2025. The most frequent departure time is 11:00AM, with 59% of daily flights leaving at noon.

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

As of November 2025, 217 flights take off from London and land in San Francisco each week. The most common flight departure day for this route is Mon, with 14% 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

Finnair 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