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

Austrian Airlines, British Airways, and Lufthansa 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 13% 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 140 minutes.

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. Sunday has historically seen more delays on average compared to the rest of the week.

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 12% of their flights experiencing any sort of delay.

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

As of December 2025, 31 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 58% of daily flights taking off at noon.

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

217 flights are operational weekly from London to San Francisco as of December 2025. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

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$ 694 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 low for flights on this route. Typical prices usually range from C$ 912 to C$ 1,409. The lowest price recently found on this route was C$ 849.

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4:10 p.m. - 1:09 a.m.LHR-SFO

16h 59m1 stop

4:30 p.m. - 10:40 a.m.SFO-LHR

10h 10mdirect

C$ 849Multiple Airlines

Find Deal

Sat, 10 Jan - Sat, 24 Jan

7:50 a.m. - 4:35 p.m.LHR-SFO

16h 45m1 stop

8:40 p.m. - 3:10 p.m.SFO-LHR

10h 30mdirect

C$ 851British Airways

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Sun, 14 Dec - Wed, 24 Dec

9:40 a.m. - 11:59 p.m.LHR-SFO

22h 19m1 stop

10:30 p.m. - 4:50 p.m.SFO-LHR

10h 20mdirect

C$ 852Delta

Find Deal

Sat, 13 Dec - Wed, 5 Aug

12:05 p.m. - 1:15 a.m.LHR-SFO

21h 10m1 stop

1:20 p.m. - 11:50 a.m.SFO-LHR

14h 30m1 stop

C$ 855United Airlines

Find Deal

Mon, 15 Dec - Wed, 24 Dec

3:35 p.m. - 2:40 p.m.LHR-SFO

31h 05m2 stops

4:45 p.m. - 4:00 p.m.SFO-LHR

15h 15m1 stop

C$ 856Scandinavian Airlines

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Thu, 23 Apr - Fri, 15 May

11:40 a.m. - 3:40 p.m.LHR-SFO

11h 00mdirect

3:59 p.m. - 1:10 p.m.SFO-LHR

13h 11m1 stop

C$ 858Delta

Find Deal

Mon, 9 Mar - Wed, 8 Apr

6:30 a.m. - 6:04 p.m.LHR-SFO

19h 34m2 stops

4:30 p.m. - 10:40 a.m.SFO-LHR

10h 10mdirect

C$ 859Delta

Find Deal

Thu, 11 Dec - Sun, 28 Dec

8:45 a.m. - 4:10 p.m.LHR-SFO

15h 25m1 stop

12:45 a.m. - 7:40 a.m.SFO-LHR

22h 55m1 stop

C$ 861United Airlines

Find Deal

Thu, 23 Apr - Tue, 28 Apr

10:20 a.m. - 12:47 a.m.LHR-SFO

22h 27m2 stops

8:00 a.m. - 8:35 a.m.SFO-LHR

16h 35m1 stop

C$ 862Finnair

Find Deal

Sun, 18 Jan - Wed, 11 Feb

10:15 a.m. - 1:50 p.m.LHR-SFO

11h 35mdirect

10:30 p.m. - 4:50 p.m.SFO-LHR

10h 20mdirect

C$ 863Delta

Find Deal

Sun, 19 Apr - Mon, 27 Apr

British Airways flights from London to San Francisco

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

British Airways

14 Dec

LHR7:50 a.m.London Heathrow

16h 45m

1 stop

SFO4:35 p.m.San Francisco

24 Dec

SFO8:40 p.m.San Francisco

10h 30m

LHR3:10 p.m.London Heathrow

C$ 851

Find similar

British Airways

14 Dec

LHR7:50 a.m.London Heathrow

16h 45m

1 stop

SFO4:35 p.m.San Francisco

28 Dec

SFO5:30 p.m.San Francisco

10h 30m

LHR12:00 p.m.London Heathrow

C$ 856

Find similar

British Airways

7 Dec

LHR7:50 a.m.London Heathrow

16h 45m

1 stop

SFO4:35 p.m.San Francisco

29 Dec

SFO5:30 p.m.San Francisco

10h 30m

LHR12:00 p.m.London Heathrow

C$ 860

Find similar

Delta flights from London to San Francisco

Our best Delta deals on London to San Francisco flight tickets

Delta

13 Dec

LHR9:40 a.m.London Heathrow

22h 19m

1 stop

SFO11:59 p.m.San Francisco

5 Aug

SFO10:30 p.m.San Francisco

10h 20m

LHR4:50 p.m.London Heathrow

C$ 852

Find similar

Delta

9 Mar

LHR11:40 a.m.London Heathrow

11h 00m

SFO3:40 p.m.San Francisco

8 Apr

SFO3:59 p.m.San Francisco

13h 11m

1 stop

LHR1:10 p.m.London Heathrow

C$ 858

Find similar

Delta

11 Dec

LHR6:30 a.m.London Heathrow

19h 34m

2 stops

SFO6:04 p.m.San Francisco

28 Dec

SFO4:30 p.m.San Francisco

10h 10m

LHR10:40 a.m.London Heathrow

C$ 859

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 10/1

4:10 p.m.-1:09 a.m.

1 stop16h 59m

San Francisco

Sat 24/1

4:30 p.m.-10:40 a.m.

Nonstop10h 10m

C$ 849

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 14/12

7:50 a.m.-4:35 p.m.

1 stop16h 45m

San Francisco

Wed 24/12

8:40 p.m.-3:10 p.m.

Nonstop10h 30m

C$ 851

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 13/12

9:40 a.m.-11:59 p.m.

1 stop22h 19m

San Francisco

Wed 5/8

10:30 p.m.-4:50 p.m.

Nonstop10h 20m

C$ 852

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 15/12

12:05 p.m.-1:15 a.m.

1 stop21h 10m

San Francisco

Wed 24/12

1:20 p.m.-11:50 a.m.

1 stop14h 30m

C$ 855

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 23/4

3:35 p.m.-2:40 p.m.

2 stops31h 05m

San Francisco

Fri 15/5

4:45 p.m.-4:00 p.m.

1 stop15h 15m

C$ 856

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 9/3

11:40 a.m.-3:40 p.m.

Nonstop11h 00m

San Francisco

Wed 8/4

3:59 p.m.-1:10 p.m.

1 stop13h 11m

C$ 858

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 11/12

6:30 a.m.-6:04 p.m.

2 stops19h 34m

San Francisco

Sun 28/12

4:30 p.m.-10:40 a.m.

Nonstop10h 10m

C$ 859

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 23/4

8:45 a.m.-4:10 p.m.

1 stop15h 25m

San Francisco

Tue 28/4

12:45 a.m.-7:40 a.m.

1 stop22h 55m

C$ 860

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 18/1

10:20 a.m.-12:47 a.m.

2 stops22h 27m

San Francisco

Wed 11/2

8:00 a.m.-8:35 a.m.

1 stop16h 35m

C$ 862

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 19/4

10:15 a.m.-1:50 p.m.

Nonstop11h 35m

San Francisco

Mon 27/4

10:30 p.m.-4:50 p.m.

Nonstop10h 20m

C$ 863

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 September. Flight prices, which tend to average around C$ 802, are often lower during this time because this is during the off-season. The month of February is another great option to travel to San Francisco, with average flight prices from London averaging around C$ 810.

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$ 811. On the other hand, Sunday 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$ 1,836.

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$ 997 when looking at flights departing in the afternoon. In contrast, the most expensive time of day to depart to San Francisco is at noon when prices are around C$ 2,202.

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$ 948 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$ 879 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 December 2025, prices for London to San Francisco flights are approximately 3% 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	C$ 3,002
Fastest flight time	11h 15m
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$ 3,002. The best round-trip flight deal from London to San Francisco found on momondo in the last 72 hours is C$ 1,671.

The fastest flight from London to San Francisco takes 11h 15m

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?
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 (37.93% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (23.25%), Airbus A380-800 (16.64%), and Boeing 777-300ER (12.23%).

San Mateo

Belmont

Los Altos

San Bruno

Santa Cruz

Newark

Milpitas

Carmel-by-the-Sea

Turlock

South San Francisco

Palo Alto

Cupertino

Mill Valley

Morgan Hill

Los Banos

Mountain View

Pacifica

Woodland

Roseville

Berkeley

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.

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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$ 694

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 27/2. 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, great deals

Big names, great deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from London to San Francisco

Cheap round-trip flights

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British Airways flights from London to San Francisco

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

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Our best Delta 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.

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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

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 December 2025, prices for London to San Francisco flights are approximately 3% more expensive when compared to flights at the same time last year.

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

Austrian Airlines, British Airways, and Lufthansa 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 13% 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 140 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. Sunday 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 12% of their flights experiencing any sort of delay.

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

As of December 2025, 31 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 58% of daily flights taking off at noon.

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

217 flights are operational weekly from London to San Francisco as of December 2025. The most popular departure day for this route is Mon, with 14% 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