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

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

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, 29 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?

205 flights are operational weekly from London to San Francisco as of January 2026. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

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.

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$ 668 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$ 709 to C$ 899. The lowest price recently found on this route was C$ 696.

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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.

7:40 a.m. - 3:50 p.m.

LHR

SFO

15h 10m

1 stop

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

SFO

LHR

14h 10m

1 stop

C$ 696United Airlines

Mon, 16 Mar - Thu, 2 Apr

7:25 a.m. - 2:30 p.m.

LHR

SFO

15h 05m

1 stop

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

SFO

LHR

10h 35mdirect

C$ 697United Airlines

Tue, 28 Apr - Tue, 19 May

1:30 p.m. - 8:00 p.m.

LHR

SFO

14h 30m

1 stop

1:50 p.m. - 11:45 a.m.

SFO

LHR

13h 55m

1 stop

C$ 700Lufthansa

Thu, 16 Apr - Mon, 20 Apr

1:30 p.m. - 8:10 p.m.

LHR

SFO

14h 40m

1 stop

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

SFO

LHR

10h 35mdirect

C$ 701United Airlines

Fri, 13 Feb - Mon, 16 Feb

6:35 a.m. - 8:35 p.m.

LHR

SFO

21h 00m

1 stop

8:52 p.m. - 11:20 a.m.

SFO

LHR

31h 28m

1 stop

C$ 704United Airlines

Fri, 20 Mar - Fri, 27 Mar

9:00 a.m. - 5:30 p.m.

LHR

SFO

15h 30m

1 stop

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

SFO

LHR

10h 35mdirect

C$ 705United Airlines

Fri, 13 Mar - Fri, 20 Mar

9:00 a.m. - 5:30 p.m.

LHR

SFO

15h 30m

1 stop

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

SFO

LHR

10h 35mdirect

C$ 707United Airlines

Fri, 13 Mar - Fri, 20 Mar

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$ 711United Airlines

Mon, 9 Feb - Mon, 16 Feb

7:40 a.m. - 2:50 p.m.

LHR

SFO

15h 10m

1 stop

8:30 a.m. - 5:55 a.m.

SFO

LHR

14h 25m

1 stop

C$ 712Multiple Airlines

Wed, 25 Feb - Wed, 11 Mar

9:30 a.m. - 3:55 p.m.

LHR

SFO

14h 25m

1 stop

10:55 p.m. - 8:35 p.m.

SFO

LHR

13h 40m

1 stop

C$ 714United Airlines

Fri, 13 Feb - Fri, 27 Feb

British Airways flights from London to San Francisco

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

British Airways

3 Feb

LHR11:25 a.m.London Heathrow

21h 22m

2 stops

SFO12:47 a.m.San Francisco

7 Feb

SFO10:29 p.m.San Francisco

13h 31m

1 stop

LHR8:00 p.m.London Heathrow

C$ 716

British Airways

18 Mar

LHR9:50 a.m.London Heathrow

13h 45m

1 stop

SFO4:35 p.m.San Francisco

6 Apr

SFO3:13 p.m.San Francisco

13h 02m

1 stop

LHR12:15 p.m.London Heathrow

C$ 734

British Airways

31 Mar

LHR7:40 a.m.London Heathrow

16h 10m

1 stop

SFO3:50 p.m.San Francisco

19 Apr

SFO10:16 p.m.San Francisco

13h 29m

1 stop

LHR7:45 p.m.London Heathrow

C$ 735

United Airlines flights from London to San Francisco

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

United Airlines

16 Mar

LHR7:40 a.m.London Heathrow

15h 10m

1 stop

SFO3:50 p.m.San Francisco

2 Apr

SFO12:00 p.m.San Francisco

14h 10m

1 stop

LHR10:10 a.m.London Heathrow

C$ 696

United Airlines

14 Apr

LHR9:00 a.m.London Heathrow

18h 00m

1 stop

SFO7:00 p.m.San Francisco

22 Apr

SFO4:35 p.m.San Francisco

10h 35m

LHR11:10 a.m.London Heathrow

C$ 697

United Airlines

13 Feb

LHR1:30 p.m.London Heathrow

14h 40m

1 stop

SFO8:10 p.m.San Francisco

16 Feb

SFO5:25 p.m.San Francisco

10h 35m

LHR12:00 p.m.London Heathrow

C$ 701

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 16/3

7:40 a.m.-3:50 p.m.

1 stop15h 10m

San Francisco

Thu 2/4

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

1 stop14h 10m

C$ 696

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 28/4

7:25 a.m.-2:30 p.m.

1 stop15h 05m

San Francisco

Tue 19/5

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

Nonstop10h 35m

C$ 697

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 16/4

1:30 p.m.-8:00 p.m.

1 stop14h 30m

San Francisco

Mon 20/4

1:50 p.m.-11:45 a.m.

1 stop13h 55m

C$ 700

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 13/2

1:30 p.m.-8:10 p.m.

1 stop14h 40m

San Francisco

Mon 16/2

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

Nonstop10h 35m

C$ 701

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 20/3

6:35 a.m.-8:35 p.m.

1 stop21h 00m

San Francisco

Fri 27/3

8:52 p.m.-11:20 a.m.

1 stop31h 28m

C$ 704

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 13/3

9:00 a.m.-5:30 p.m.

1 stop15h 30m

San Francisco

Fri 20/3

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

Nonstop10h 35m

C$ 705

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 13/3

9:00 a.m.-5:30 p.m.

1 stop15h 30m

San Francisco

Fri 20/3

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

Nonstop10h 35m

C$ 707

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 9/2

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

Nonstop11h 15m

San Francisco

Mon 16/2

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

Nonstop10h 35m

C$ 711

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 25/2

7:40 a.m.-2:50 p.m.

1 stop15h 10m

San Francisco

Wed 11/3

8:30 a.m.-5:55 a.m.

1 stop14h 25m

C$ 712

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 13/2

9:30 a.m.-3:55 p.m.

1 stop14h 25m

San Francisco

Fri 27/2

10:55 p.m.-8:35 p.m.

1 stop13h 40m

C$ 714

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$ 768, 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$ 782.

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$ 794. 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$ 1,849.

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$ 975 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$ 1,636.

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$ 928 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$ 873 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$ 3,011
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$ 3,011. The best round-trip flight deal from London to San Francisco found on momondo in the last 72 hours is C$ 3,824.

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 (31.61% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (19.98%), Airbus A380-800 (19.51%), and Boeing 777-300ER (13.29%).

San Mateo

Belmont

Los Altos

San Bruno

Santa Cruz

Newark

Milpitas

Carmel-by-the-Sea

Turlock

South San Francisco

Palo Alto

Burlingame

Fremont

Santa Clara

Cupertino

Mill Valley

Pacifica

Morgan Hill

Woodland

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$ 668

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 31/5. 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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Big names, great deals

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British Airways flights from London to San Francisco

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Our best United Airlines 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?

SWISS, United Airlines, and British Airways 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, 29 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?

205 flights are operational weekly from London to San Francisco as of January 2026. The most popular departure day for this route is Mon, with 15% 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