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

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

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

Copenhagen (CPH) has the shortest average layover time for this route: 4h 01m.

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

As of January 2026, 199 flights take off from London and land in San Francisco each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.

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

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

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

Copenhagen (CPH) was the most common stop: 71% of momondo users choosing 1-stop flights on this route connected there.

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

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

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 41% 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 layover airport offers the lowest fares from London to San Francisco?

Flights via Copenhagen (CPH) offer the lowest average round-trip price of $693.

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

The number of flights available between London and San Francisco is 28 per day as of January 2026. The most frequent departure time is 11:00AM, with 61% of daily flights leaving at noon.

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: 15h 20m.

How often are flights from London to San Francisco delayed?

Historically, on average around 11% of flights between London and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 149 minutes.

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

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 10% of their flights experiencing any sort of delay.

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 January 2026.

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.

$391 Cheap Flights from London to San Francisco in 2026

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 $534 to $782. The lowest price recently found on this route was $515.

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Find the cheapest flights from London to San Francisco

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:00 am - 9:39 pm

LHR

SFO

19h 39m

2 stops

12:00 pm - 11:20 am

SFO

LHR

16h 20m

1 stop

$515Multiple Airlines

Wed, Mar 11 - Wed, Mar 18

6:00 am - 4:30 pm

LHR

SFO

18h 30m

1 stop

7:25 pm - 9:25 pm

SFO

LHR

18h 00m

2 stops

$516SWISS

Thu, Feb 5 - Tue, Feb 10

7:25 am - 2:35 pm

LHR

SFO

15h 10m

1 stop

9:05 pm - 7:40 pm

SFO

LHR

14h 35m

1 stop

$517Lufthansa

Fri, Apr 10 - Sun, Apr 19

10:05 am - 2:20 pm

LHR

SFO

11h 15mnonstop

12:55 pm - 7:25 am

SFO

LHR

10h 30mnonstop

$518United Airlines

Wed, Mar 11 - Mon, Mar 30

5:40 pm - 4:30 pm

LCY

SFO

30h 50m

1 stop

7:25 pm - 5:05 pm

SFO

LCY

13h 40m

1 stop

$518SWISS

Fri, Feb 6 - Mon, Feb 9

9:55 am - 8:10 pm

LCY

SFO

18h 15m

1 stop

2:40 pm - 5:55 pm

SFO

LCY

19h 15m

1 stop

$519Lufthansa

Fri, Feb 13 - Tue, Mar 31

1:45 pm - 5:00 pm

LHR

SFO

11h 15mnonstop

12:50 pm - 7:25 am

SFO

LHR

10h 35mnonstop

$519Austrian Airlines

Mon, Feb 2 - Thu, Feb 12

10:05 am - 1:20 pm

LHR

SFO

11h 15mnonstop

11:55 pm - 9:20 pm

SFO

LHR

13h 25m

1 stop

$520United Airlines

Sat, Feb 21 - Mon, Mar 2

4:25 pm - 4:35 pm

LGW

SFO

32h 10m

1 stop

8:20 pm - 9:45 am

SFO

LGW

29h 25m

1 stop

$524TAP AIR PORTUGAL

Wed, Apr 1 - Fri, Apr 10

4:25 pm - 2:35 pm

LGW

SFO

30h 10m

1 stop

7:55 pm - 9:45 am

SFO

LGW

29h 50m

1 stop

$525TAP AIR PORTUGAL

Mon, Apr 20 - Thu, Apr 30

British Airways flights from London to San Francisco

Our best British Airways deals on London to San Francisco flight tickets

British Airways

Feb 7

LHR11:45 amLondon Heathrow

11h 15m

SFO3:00 pmSan Francisco

Feb 15

SFO5:30 pmSan Francisco

10h 30m

LHR12:00 pmLondon Heathrow

$527

British Airways

Jan 27

LHR8:50 amLondon Heathrow

14h 45m

1 stop

SFO3:35 pmSan Francisco

Feb 14

SFO2:27 pmSan Francisco

13h 48m

1 stop

LHR12:15 pmLondon Heathrow

$529

British Airways

Feb 21

LHR7:50 amLondon Heathrow

15h 45m

1 stop

SFO3:35 pmSan Francisco

Mar 2

SFO2:27 pmSan Francisco

13h 48m

1 stop

LHR12:15 pmLondon Heathrow

$532

Iberia flights from London to San Francisco

Our best Iberia deals on London to San Francisco flight tickets

Iberia

Jan 27

LHR10:45 amLondon Heathrow

22h 02m

2 stops

SFO12:47 amSan Francisco

Feb 2

SFO8:00 amSan Francisco

20h 20m

1 stop

LHR12:20 pmLondon Heathrow

$582

Iberia

Feb 1

LHR11:25 amLondon Heathrow

21h 22m

2 stops

SFO12:47 amSan Francisco

Feb 8

SFO7:00 amSan Francisco

19h 00m

1 stop

LHR10:00 amLondon Heathrow

$588

Iberia

Mar 31

LGW7:20 amLondon Gatwick

18h 35m

1 stop

SFO5:55 pmSan Francisco

Apr 14

SFO7:40 pmSan Francisco

19h 10m

1 stop

LGW10:50 pmLondon Gatwick

$592

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 3/11

9:00 am-9:39 pm

2 stops19h 39m

San Francisco

Wed 3/18

12:00 pm-11:20 am

1 stop16h 20m

$515

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 2/5

6:00 am-4:30 pm

1 stop18h 30m

San Francisco

Tue 2/10

7:25 pm-9:25 pm

2 stops18h 00m

$516

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 4/10

7:25 am-2:35 pm

1 stop15h 10m

San Francisco

Sun 4/19

9:05 pm-7:40 pm

1 stop14h 35m

$517

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 3/11

10:05 am-2:20 pm

Nonstop11h 15m

San Francisco

Mon 3/30

12:55 pm-7:25 am

Nonstop10h 30m

$518

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Fri 2/6

5:40 pm-4:30 pm

1 stop30h 50m

San Francisco

Mon 2/9

7:25 pm-5:05 pm

1 stop13h 40m

$518

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Fri 2/13

9:55 am-8:10 pm

1 stop18h 15m

San Francisco

Tue 3/31

2:40 pm-5:55 pm

1 stop19h 15m

$519

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 2/2

1:45 pm-5:00 pm

Nonstop11h 15m

San Francisco

Thu 2/12

12:50 pm-7:25 am

Nonstop10h 35m

$519

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 2/21

10:05 am-1:20 pm

Nonstop11h 15m

San Francisco

Mon 3/2

11:55 pm-9:20 pm

1 stop13h 25m

$520

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Wed 4/1

4:25 pm-4:35 pm

1 stop32h 10m

San Francisco

Fri 4/10

8:20 pm-9:45 am

1 stop29h 25m

$524

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Mon 4/20

4:25 pm-2:35 pm

1 stop30h 10m

San Francisco

Thu 4/30

7:55 pm-9:45 am

1 stop29h 50m

$525

Flights are sorted by cheapest round-trip 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

Delays

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 September is also cheap. Prices for this month can be found on momondo for an average of $572.

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 $662. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $758.

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 at noon. Our users have found flights to San Francisco at noon for as low as $703. Flights in the afternoon are often more expensive with an average ticket price of $743.

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 $680 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 $639 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 January 2026, prices for London to San Francisco flights are approximately 14% cheaper 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	10h 55m
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 $685.

The fastest flight from London to San Francisco takes 10h 55m

Direct flights go from London to San Francisco every day.

There is 1 airport in San Francisco. From London there are direct flights to 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 10h 55m.
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 January 2026.
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 32.83% of the total bookings. Other popular models include Boeing 787-9 Dreamliner with 20.44%, Airbus A380-800 with 19.17%, and Boeing 777-300ER with 13.21%.
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 United Airlines, representing 23% of all bookings. The subsequent popular airlines are British Airways at 22%, Lufthansa at 11%, and American Airlines at 10%.

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
TAP AIR PORTUGAL	PriceFrom $449	Free Cancellation	Rating 7.1 2,123 reviews	Search TAP AIR PORTUGAL flights
Aer Lingus	PriceFrom $492	Free Cancellation	Rating 7.2 1,440 reviews	Search Aer Lingus flights
British Airways	PriceFrom $513	Free Cancellation	Rating 6.7 7,691 reviews	Search British Airways flights
Scandinavian Airlines	PriceFrom $520	Free Cancellation	Rating 7.3 1,660 reviews	Search Scandinavian Airlines flights
Brussels Airlines	PriceFrom $530	Free Cancellation	Rating 7.2 382 reviews	Search Brussels Airlines flights
Lufthansa	PriceFrom $532	Free Cancellation	Rating 6.8 7,736 reviews	Search Lufthansa flights
United Airlines	PriceFrom $534	Free Cancellation	Rating 7.4 9,190 reviews	Search United Airlines flights
Virgin Atlantic	PriceFrom $550	Free Cancellation	Rating 7.5 678 reviews	Search Virgin Atlantic flights
Delta	PriceFrom $557	Free Cancellation	Rating 7.9 8,085 reviews	Search Delta flights
Austrian Airlines	PriceFrom $567	Free Cancellation	Rating 7.6 894 reviews	Search Austrian Airlines flights

Delta Flights From London to San Francisco
Delta flies from London to San Francisco around 7 times per week, with 8,085 momondo users rating the airline 7.9/10. The cheapest Delta deal from London to San Francisco in the last 72 hours was $557 (round-trip), much lower than the average airfare cost of $715 for Delta flights on this route.
Austrian Airlines Flights From London to San Francisco
$567 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 $731, however, with flight time and availability significantly affecting the price. Austrian Airlines (7.6/10 from 894 user reviews) flies into San Francisco from London 14 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 $478

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 3/14. 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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Use the filters below to find and compare flights from London to San Francisco that are best for you.

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

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 September is also cheap. Prices for this month can be found on momondo for an average of $572.

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 $662. The most expensive day to fly to San Francisco is Monday, with ticket prices averaging around $758.

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 at noon. Our users have found flights to San Francisco at noon for as low as $703. Flights in the afternoon are often more expensive with an average ticket price of $743.

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 January 2026, prices for London to San Francisco flights are approximately 14% cheaper when compared to flights at the same time last year.

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

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

What airlines fly to San Francisco?

How often are flights from London to San Francisco delayed?

Historically, on average around 11% of flights between London and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 149 minutes.

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

Generally, flights departing in the morning tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

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

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

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

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 10% of their flights experiencing any sort of delay.

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

Copenhagen (CPH) was the most common stop: 71% 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 $693.

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: 15h 20m.

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

Copenhagen (CPH) has the shortest average layover time for this route: 4h 01m.

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

The number of flights available between London and San Francisco is 28 per day as of January 2026. The most frequent departure time is 11:00AM, with 61% of daily flights leaving at noon.

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

As of January 2026, 199 flights take off from London and land in San Francisco each week. The most common flight departure day for this route is Mon, with 16% 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

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