How often are flights from London to San Francisco delayed?

Historically, on average around 14% 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 144 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.

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

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

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

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

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.

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

Prices for flights from London Heathrow Airport to San Francisco Airport are updated daily.

How many operators does momondo search for flights from London Heathrow Airport to San Francisco Airport?

As of October 2025, there is 1 operator available to choose from for flights from London Heathrow Airport to San Francisco Airport.

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

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

The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

C$ 672 Cheap Flights from London Heathrow Airport to San Francisco in 2025/26

Q: How many flights depart from London Heathrow Airport to San Francisco on average per week?

The number of flights available between London Heathrow Airport and San Francisco is 118 per week as of October 2025. The most frequent departure day is Wed, with 26% of weekly flights leaving on this day.

Q: How many flights depart from London Heathrow Airport to San Francisco on average per day?

The number of flights available between London Heathrow Airport and San Francisco is 16 per day as of October 2025. The most frequent departure time is 11:00a.m., with 56% of daily flights leaving at noon.

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7:50 p.m. - 2:35 p.m.LHR-SFO

26h 45m2 stops

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

17h 50m1 stop

C$ 803Scandinavian Airlines

Find Deal

Wed, 28 Jan - Mon, 9 Feb

6:40 a.m. - 2:35 p.m.LHR-SFO

15h 55m1 stop

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

17h 50m1 stop

C$ 806Scandinavian Airlines

Find Deal

Sat, 21 Feb - Sun, 1 Mar

7:50 p.m. - 2:35 p.m.LHR-SFO

26h 45m2 stops

4:40 p.m. - 4:00 p.m.SFO-LHR

15h 20m1 stop

C$ 807Scandinavian Airlines

Find Deal

Wed, 28 Jan - Mon, 9 Feb

7:50 p.m. - 2:35 p.m.LHR-SFO

26h 45m2 stops

4:40 p.m. - 4:25 p.m.SFO-LHR

15h 45m2 stops

C$ 809Scandinavian Airlines

Find Deal

Wed, 28 Jan - Mon, 9 Feb

9:00 a.m. - 4:30 p.m.LHR-SFO

15h 30m1 stop

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

13h 25m1 stop

C$ 850United Airlines

Find Deal

Wed, 3 Dec - Wed, 10 Dec

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

15h 10m1 stop

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

10h 35mdirect

C$ 855United Airlines

Find Deal

Mon, 8 Dec - Mon, 15 Dec

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

14h 25m1 stop

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

10h 35mdirect

C$ 876Multiple Airlines

Find Deal

Wed, 14 Jan - Wed, 11 Feb

6:30 a.m. - 11:50 a.m.LHR-SFO

13h 20m1 stop

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

10h 10mdirect

C$ 881Virgin Atlantic

Find Deal

Mon, 17 Nov - Sun, 30 Nov

11:45 a.m. - 12:50 p.m.LHR-SFO

32h 05m1 stop

3:55 p.m. - 10:40 a.m.SFO-LHR

10h 45mdirect

C$ 887Delta

Find Deal

Sun, 22 Mar - Tue, 14 Apr

6:30 a.m. - 12:50 p.m.LHR-SFO

13h 20m1 stop

12:00 p.m. - 1:10 p.m.SFO-LHR

17h 10m1 stop

C$ 892Delta

Find Deal

Mon, 23 Mar - Fri, 10 Apr

Virgin Atlantic flights from London Heathrow Airport to San Francisco

Our best Virgin Atlantic deals on London Heathrow Airport to San Francisco flight tickets

Virgin Atlantic

17 Nov

LHR6:30 a.m.London Heathrow

13h 20m

1 stop

SFO11:50 a.m.San Francisco

30 Nov

SFO4:30 p.m.San Francisco

10h 10m

LHR10:40 a.m.London Heathrow

C$ 881

Find similar

Virgin Atlantic

12 Nov

LHR11:40 a.m.London Heathrow

11h 00m

SFO2:40 p.m.San Francisco

19 Nov

SFO1:20 p.m.San Francisco

12h 40m

1 stop

LHR10:00 a.m.London Heathrow

C$ 905

Find similar

Virgin Atlantic

11 Nov

LHR6:30 a.m.London Heathrow

13h 20m

1 stop

SFO11:50 a.m.San Francisco

16 Nov

SFO4:30 p.m.San Francisco

10h 10m

LHR10:40 a.m.London Heathrow

C$ 996

Find similar

Scandinavian Airlines flights from London Heathrow Airport to San Francisco

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

Scandinavian Airlines

28 Jan

LHR7:50 p.m.London Heathrow

26h 45m

2 stops

SFO2:35 p.m.San Francisco

9 Feb

SFO4:40 p.m.San Francisco

17h 50m

1 stop

LHR6:30 p.m.London Heathrow

C$ 803

Find similar

Scandinavian Airlines

21 Feb

LHR6:40 a.m.London Heathrow

15h 55m

1 stop

SFO2:35 p.m.San Francisco

1 Mar

SFO4:40 p.m.San Francisco

17h 50m

1 stop

LHR6:30 p.m.London Heathrow

C$ 806

Find similar

Scandinavian Airlines

28 Jan

LHR7:50 p.m.London Heathrow

26h 45m

2 stops

SFO2:35 p.m.San Francisco

9 Feb

SFO4:40 p.m.San Francisco

15h 20m

1 stop

LHR4:00 p.m.London Heathrow

C$ 807

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from London Heathrow Airport to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 28/1

7:50 p.m.-2:35 p.m.

2 stops26h 45m

San Francisco

Mon 9/2

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

1 stop17h 50m

C$ 803

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 21/2

6:40 a.m.-2:35 p.m.

1 stop15h 55m

San Francisco

Sun 1/3

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

1 stop17h 50m

C$ 806

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 28/1

7:50 p.m.-2:35 p.m.

2 stops26h 45m

San Francisco

Mon 9/2

4:40 p.m.-4:00 p.m.

1 stop15h 20m

C$ 807

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 28/1

7:50 p.m.-2:35 p.m.

2 stops26h 45m

San Francisco

Mon 9/2

4:40 p.m.-4:25 p.m.

2 stops15h 45m

C$ 809

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 3/12

9:00 a.m.-4:30 p.m.

1 stop15h 30m

San Francisco

Wed 10/12

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

1 stop13h 25m

C$ 850

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 8/12

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

1 stop15h 10m

San Francisco

Mon 15/12

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

Nonstop10h 35m

C$ 855

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 14/1

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

1 stop14h 25m

San Francisco

Wed 11/2

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

Nonstop10h 35m

C$ 876

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 17/11

6:30 a.m.-11:50 a.m.

1 stop13h 20m

San Francisco

Sun 30/11

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

Nonstop10h 10m

C$ 881

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 22/3

11:45 a.m.-12:50 p.m.

1 stop32h 05m

San Francisco

Tue 14/4

3:55 p.m.-10:40 a.m.

Nonstop10h 45m

C$ 887

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 23/3

6:30 a.m.-12:50 p.m.

1 stop13h 20m

San Francisco

Fri 10/4

12:00 p.m.-1:10 p.m.

1 stop17h 10m

C$ 892

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How to get the cheapest flight ticket from London Heathrow Airport 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 cheapest month to fly to San Francisco?

The cheapest month to fly to San Francisco from London Heathrow Airport is in February. Flight prices, which tend to average around C$ 790, 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 Heathrow Airport averaging around C$ 811.

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

The cheapest day to depart from London Heathrow Airport 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, Saturday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 1,885.

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

Flying to San Francisco from London Heathrow Airport at noon is the least expensive time of day to depart. momondo users have found prices as low as C$ 891 when looking at flights departing at noon. In contrast, the most expensive time of day to depart to San Francisco is in the morning when prices are around C$ 1,155.

What is the cheapest London Heathrow to San Francisco flight route?

Fly from London Heathrow to San Francisco for the best London Heathrow - 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 Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around C$ 945 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 Heathrow Airport for as low as C$ 878 on momondo.

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

There are 2 cabin classes available to choose from on London Heathrow 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 Heathrow Airport to San Francisco flights?

You could potentially save up to 1% on your flight if you consider stops on a London Heathrow Airport to San Francisco flight.

How have London Heathrow Airport to San Francisco flight prices changed over time?

As of October 2025, prices for London Heathrow Airport to San Francisco flights are approximately 21% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to San Francisco according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap London Heathrow Airport to San Francisco (LHR to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to San Francisco

Best price found	C$ 620
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 Heathrow Airport in the past 72 hours is C$ 620. The best round-trip flight deal from London Heathrow Airport to San Francisco found on momondo in the last 72 hours is C$ 1,484.

The fastest flight from London Heathrow Airport to San Francisco takes 11h 00m

Direct flights go from London Heathrow Airport to San Francisco every day.

There is 1 airport near San Francisco: San Francisco (SFO)

Search flight deals

How far is London Heathrow to San Francisco by plane?
San Francisco is 8596.0 km away from London Heathrow. Flights usually cover this in 11h 15m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London Heathrow Airport to San Francisco Airport?
Prices for flights from London Heathrow Airport to San Francisco Airport are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to San Francisco Airport?
As of October 2025, there is 1 operator available to choose from for flights from London Heathrow Airport to San Francisco Airport.
How old do you have to be to fly from London Heathrow Airport 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 Heathrow Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London Heathrow Airport to San Francisco?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London Heathrow Airport to San Francisco is Boeing 777 (41.39% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (24.00%), Airbus A380-800 (13.13%), and Boeing 777-300ER (10.73%).
What is the most popular airline from London Heathrow Airport to San Francisco?
Based on momondo bookings for flights between London Heathrow Airport and San Francisco, the leading airline is United Airlines, making up 100% of the total bookings.

Best airlines flying from London Heathrow Airport to San Francisco

Compare and see reviews for airlines that fly from London Heathrow Airport to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom C$ 889	Free Cancellation	Rating 7.4 8,998 reviews		Search United Airlines flights

United Airlines Flights From London Heathrow Airport to San Francisco
United Airlines flies from London Heathrow Airport to San Francisco around 8 times per week, with 8,999 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from London Heathrow Airport to San Francisco in the last 72 hours was C$ 889 (round-trip), much lower than the average airfare cost of C$ 889 for United Airlines flights on this route.

San Mateo

Belmont

Los Altos

San Bruno

Santa Cruz

Newark

Fremont

Carmel-by-the-Sea

Turlock

South San Francisco

Palo Alto

Sunnyvale

Santa Clara

Cupertino

Mill Valley

Morgan Hill

Los Banos

Mountain View

Pacifica

Woodland

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to San Francisco . Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to San Francisco from London which offer a flexible booking policy as well as other useful filters and features.

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?

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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Cheap flights from London Heathrow Airport to San Francisco from C$ 672

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Find the cheapest flights from London Heathrow Airport to San Francisco

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Virgin Atlantic flights from London Heathrow Airport to San Francisco

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Scandinavian Airlines flights from London Heathrow Airport to San Francisco

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

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Use the filters below to find and compare flights from London Heathrow Airport to San Francisco that are best for you.

See travel insights to San Francisco from

How to get the cheapest flight ticket from London Heathrow Airport 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 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 Heathrow to San Francisco flight route?

Fly from London Heathrow to San Francisco for the best London Heathrow - San Francisco flight prices

How far in advance should I book a flight to San Francisco?

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

There are 2 cabin classes available to choose from on London Heathrow 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 Heathrow Airport to San Francisco flights?

You could potentially save up to 1% on your flight if you consider stops on a London Heathrow Airport to San Francisco flight.

How have London Heathrow Airport to San Francisco flight prices changed over time?

As of October 2025, prices for London Heathrow Airport to San Francisco flights are approximately 21% more expensive when compared to flights at the same time last year.

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

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

How often are flights from London to San Francisco delayed?

Historically, on average around 14% 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 144 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, Air New Zealand 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 Heathrow Airport to San Francisco on average per day?

The number of flights available between London Heathrow Airport and San Francisco is 16 per day as of October 2025. The most frequent departure time is 11:00a.m., with 56% of daily flights leaving at noon.

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

The number of flights available between London Heathrow Airport and San Francisco is 118 per week as of October 2025. The most frequent departure day is Wed, with 26% of weekly flights leaving on this day.

When to book flights from London Heathrow Airport to San Francisco

Cheap London Heathrow Airport to San Francisco (LHR to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to San Francisco

Best price found

Fastest flight time

Direct flights

Airports in San Francisco

How far is London Heathrow to San Francisco by plane?

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

How many operators does momondo search for flights from London Heathrow Airport to San Francisco Airport?

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

What is the most popular airline from London Heathrow Airport to San Francisco?

Best airlines flying from London Heathrow Airport to San Francisco

Compare and see reviews for airlines that fly from London Heathrow Airport to San Francisco with momondo

United Airlines Flights From London Heathrow Airport 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