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

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

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.

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

199 flights are operational weekly from London to San Francisco as of January 2026. The most popular departure day for this route is Mon, with 16% of flights per week taking off on this day.

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

As of January 2026, 28 flights take off from London and land in San Francisco each day. The most common flight departure time for this route is 11:00a.m., with 61% of daily flights taking off at noon.

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 departing in the evening have, in the past, seen delays more frequently in comparison.

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

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

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

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

Prices for flights from London to San Francisco Airport refresh daily.

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

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to San Francisco Airport.

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

The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 666 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 C$ 738 to C$ 1,080. The lowest price recently found on this route was C$ 712.

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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.

6:40 p.m. - 4:30 p.m.

LHR

SFO

29h 50m

1 stop

7:25 p.m. - 9:25 p.m.

SFO

LHR

18h 00m

2 stops

C$ 712SWISS

Fri, 6 Feb - Mon, 9 Feb

6:00 a.m. - 4:30 p.m.

LHR

SFO

18h 30m

1 stop

7:25 p.m. - 9:25 p.m.

SFO

LHR

18h 00m

2 stops

C$ 713SWISS

Thu, 5 Feb - Tue, 10 Feb

10:05 a.m. - 1:20 p.m.

LHR

SFO

11h 15mdirect

12:50 p.m. - 7:25 a.m.

SFO

LHR

10h 35mdirect

C$ 716United Airlines

Sat, 31 Jan - Fri, 13 Feb

1:45 p.m. - 5:00 p.m.

LHR

SFO

11h 15mdirect

5:25 p.m. - 12:00 p.m.

SFO

LHR

10h 35mdirect

C$ 719Lufthansa

Sat, 21 Feb - Sun, 1 Mar

1:45 p.m. - 5:00 p.m.

LHR

SFO

11h 15mdirect

6:35 a.m. - 9:40 a.m.

SFO

LHR

19h 05m

1 stop

C$ 720United Airlines

Sat, 21 Feb - Sun, 1 Mar

1:25 p.m. - 9:22 p.m.

LHR

SFO

15h 57m

1 stop

6:25 p.m. - 12:00 p.m.

SFO

LHR

10h 35mdirect

C$ 722United Airlines

Sun, 22 Feb - Sun, 8 Mar

1:25 p.m. - 9:22 p.m.

LHR

SFO

15h 57m

1 stop

12:50 p.m. - 7:25 a.m.

SFO

LHR

10h 35mdirect

C$ 723United Airlines

Sun, 22 Feb - Tue, 3 Mar

11:35 a.m. - 11:10 p.m.

LHR

SFO

19h 35m

2 stops

6:25 p.m. - 12:00 p.m.

SFO

LHR

10h 35mdirect

C$ 724United Airlines

Thu, 26 Feb - Sun, 8 Mar

11:35 a.m. - 8:10 p.m.

LHR

SFO

16h 35m

2 stops

11:55 p.m. - 9:20 p.m.

SFO

LHR

13h 25m

1 stop

C$ 726United Airlines

Fri, 20 Feb - Fri, 27 Feb

12:10 p.m. - 4:15 p.m.

LHR

SFO

36h 05m

1 stop

12:00 p.m. - 10:10 a.m.

SFO

LHR

14h 10m

1 stop

C$ 727United Airlines

Wed, 20 May - Wed, 27 May

United Airlines flights from London to San Francisco

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

United Airlines

31 Jan

LHR10:05 a.m.London Heathrow

11h 15m

SFO1:20 p.m.San Francisco

14 Feb

SFO12:50 p.m.San Francisco

10h 35m

LHR7:25 a.m.London Heathrow

C$ 716

United Airlines

29 Jan

LHR10:05 a.m.London Heathrow

11h 15m

SFO1:20 p.m.San Francisco

11 Feb

SFO5:25 p.m.San Francisco

10h 35m

LHR12:00 p.m.London Heathrow

C$ 718

United Airlines

21 Feb

LHR10:05 a.m.London Heathrow

11h 15m

SFO1:20 p.m.San Francisco

2 Mar

SFO11:55 p.m.San Francisco

13h 25m

1 stop

LHR9:20 p.m.London Heathrow

C$ 719

British Airways flights from London to San Francisco

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

British Airways

23 Mar

LHR9:50 a.m.London Heathrow

13h 45m

1 stop

SFO4:35 p.m.San Francisco

29 Mar

SFO3:58 p.m.San Francisco

14h 27m

1 stop

LHR2:25 p.m.London Heathrow

C$ 730

British Airways

27 Jan

LHR8:50 a.m.London Heathrow

14h 45m

1 stop

SFO3:35 p.m.San Francisco

14 Feb

SFO2:27 p.m.San Francisco

13h 48m

1 stop

LHR12:15 p.m.London Heathrow

C$ 733

British Airways

21 Feb

LHR9:50 a.m.London Heathrow

13h 45m

1 stop

SFO3:35 p.m.San Francisco

1 Mar

SFO10:35 p.m.San Francisco

15h 35m

1 stop

LHR10:10 p.m.London Heathrow

C$ 736

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 6/2

6:40 p.m.-4:30 p.m.

1 stop29h 50m

San Francisco

Mon 9/2

7:25 p.m.-9:25 p.m.

2 stops18h 00m

C$ 712

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 5/2

6:00 a.m.-4:30 p.m.

1 stop18h 30m

San Francisco

Tue 10/2

7:25 p.m.-9:25 p.m.

2 stops18h 00m

C$ 713

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 31/1

10:05 a.m.-1:20 p.m.

Nonstop11h 15m

San Francisco

Fri 13/2

12:50 p.m.-7:25 a.m.

Nonstop10h 35m

C$ 716

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 21/2

1:45 p.m.-5:00 p.m.

Nonstop11h 15m

San Francisco

Sun 1/3

5:25 p.m.-12:00 p.m.

Nonstop10h 35m

C$ 719

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 21/2

1:45 p.m.-5:00 p.m.

Nonstop11h 15m

San Francisco

Sun 1/3

6:35 a.m.-9:40 a.m.

1 stop19h 05m

C$ 720

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 22/2

1:25 p.m.-9:22 p.m.

1 stop15h 57m

San Francisco

Sun 8/3

6:25 p.m.-12:00 p.m.

Nonstop10h 35m

C$ 722

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 22/2

1:25 p.m.-9:22 p.m.

1 stop15h 57m

San Francisco

Tue 3/3

12:50 p.m.-7:25 a.m.

Nonstop10h 35m

C$ 723

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 26/2

11:35 a.m.-11:10 p.m.

2 stops19h 35m

San Francisco

Sun 8/3

6:25 p.m.-12:00 p.m.

Nonstop10h 35m

C$ 724

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 20/2

11:35 a.m.-8:10 p.m.

2 stops16h 35m

San Francisco

Fri 27/2

11:55 p.m.-9:20 p.m.

1 stop13h 25m

C$ 726

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 20/5

12:10 p.m.-4:15 p.m.

1 stop36h 05m

San Francisco

Wed 27/5

12:00 p.m.-10:10 a.m.

1 stop14h 10m

C$ 727

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

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?

The cheapest month to fly to San Francisco from London is in February. Flight prices, which tend to average around C$ 780, are often lower during this time because this is during the off-season. The month of September is another great option to travel to San Francisco, with average flight prices from London averaging around C$ 791.

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. Travellers who choose to depart for San Francisco on a Thursday will often find tickets for as low as C$ 803. On the other hand, Monday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,870.

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

Flying to San Francisco from London in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as C$ 986 when looking at flights departing in the afternoon. In contrast, the most expensive time of day to depart to San Francisco is in the morning when prices are around C$ 1,654.

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 C$ 940 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 C$ 883 on momondo.

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

There are 2 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.

Can stopping save me money on London to San Francisco flights?

No. A direct flight is the cheapest option for a flight between London to San Francisco.

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	C$ 3,046
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 C$ 3,046. The best round-trip flight deal from London to San Francisco found on momondo in the last 72 hours is C$ 3,867.

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 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?
The distance between London and San Francisco is about 8609.4 km. Flights usually cover this in 11h 00m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London to San Francisco Airport?
Prices for flights from London to San Francisco Airport refresh daily.
How old do you have to be to fly from London to San Francisco Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The travel and health documents required for your trip to San Francisco Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Francisco Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from London to San Francisco?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London to San Francisco is Boeing 777 (32.83% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (20.44%), Airbus A380-800 (19.17%), and Boeing 777-300ER (13.21%).

San Mateo

Belmont

Los Altos

San Bruno

Santa Cruz

Newark

Milpitas

Carmel-by-the-Sea

Turlock

South San Francisco

Palo Alto

Burlingame

Santa Clara

Cupertino

Mill Valley

Pacifica

Morgan Hill

Woodland

Roseville

Los Banos

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from London.

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

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

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

momondo helps you find the best flight between London and San Francisco by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of London to San Francisco flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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 C$ 661

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 14/3. 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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Our best British Airways deals on London to San Francisco flight tickets

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See travel insights to San Francisco from

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?

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

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

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 2 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.

Can stopping save me money on London to San Francisco flights?

No. A direct flight is the cheapest option for a flight between London to San Francisco.

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

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 departing 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 that experiences the fewest 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 has had the least delays on this route over the last 12 months, with about 10% of their flights experiencing any sort of delay.

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

As of January 2026, 28 flights take off from London and land in San Francisco each day. The most common flight departure time for this route is 11:00a.m., with 61% of daily flights taking off at noon.

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

199 flights are operational weekly from London to San Francisco as of January 2026. The most popular departure day for this route is Mon, with 16% of flights per week 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 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?

Travelling 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.

Find better results for your trip to the United States

Airports servicing California