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.

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 141 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.

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 11% of their flights experiencing any sort of delay.

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

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

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 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$ 680 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 202 per week as of December 2025. The most frequent departure day is Tue, with 15% 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 28 per day as of December 2025. The most frequent departure time is 11:00a.m., with 72% of daily flights leaving at noon.

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Find the cheapest flights from London Heathrow Airport to San Francisco

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One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:30 a.m. - 12:40 p.m.

LHR

SFO

14h 10m1 stop

8:52 p.m. - 12:20 p.m.

SFO

LHR

31h 28m1 stop

C$ 840United Airlines

Tue, 23 Jun - Fri, 10 Jul

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

LHR

SFO

50h 45m2 stops

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

SFO

LHR

15h 20m1 stop

C$ 842Scandinavian Airlines

Tue, 13 Jan - Sun, 8 Feb

3:35 p.m. - 9:44 a.m.

LHR

SFO

26h 09m1 stop

2:05 p.m. - 8:00 p.m.

SFO

LHR

21h 55m1 stop

C$ 844British Airways

Mon, 12 Jan - Sat, 28 Feb

10:35 a.m. - 12:47 a.m.

LHR

SFO

22h 12m1 stop

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

SFO

LHR

10h 30mdirect

C$ 845Finnair

Fri, 16 Jan - Mon, 9 Feb

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

LHR

SFO

50h 45m2 stops

4:40 p.m. - 5:40 p.m.

SFO

LHR

17h 00m1 stop

C$ 846Scandinavian Airlines

Tue, 13 Jan - Sat, 17 Jan

12:40 p.m. - 7:05 a.m.

LHR

SFO

26h 25m2 stops

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

SFO

LHR

14h 10m1 stop

C$ 848United Airlines

Mon, 25 May - Mon, 1 Jun

10:05 a.m. - 7:12 p.m.

LHR

SFO

17h 07m1 stop

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

SFO

LHR

10h 30mdirect

C$ 849Finnair

Tue, 13 Jan - Sat, 21 Feb

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

LHR

SFO

31h 00m2 stops

4:40 p.m. - 9:35 p.m.

SFO

LHR

20h 55m2 stops

C$ 851Scandinavian Airlines

Thu, 15 Jan - Mon, 19 Jan

6:10 p.m. - 8:11 p.m.

LHR

SFO

34h 01m2 stops

4:35 p.m. - 11:00 a.m.

SFO

LHR

10h 25mdirect

C$ 852Finnair

Mon, 22 Jun - Sat, 11 Jul

6:30 a.m. - 12:40 p.m.

LHR

SFO

14h 10m1 stop

2:40 p.m. - 12:40 p.m.

SFO

LHR

14h 00m1 stop

C$ 855Lufthansa

Mon, 13 Apr - Tue, 21 Apr

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

13 Jan

LHR7:50 p.m.London Heathrow

50h 45m

2 stops

SFO2:35 p.m.San Francisco

8 Feb

SFO4:40 p.m.San Francisco

15h 20m

1 stop

LHR4:00 p.m.London Heathrow

C$ 842

Find similar

Scandinavian Airlines

13 Jan

LHR7:50 p.m.London Heathrow

50h 45m

2 stops

SFO2:35 p.m.San Francisco

17 Jan

SFO4:40 p.m.San Francisco

17h 00m

1 stop

LHR5:40 p.m.London Heathrow

C$ 846

Find similar

Scandinavian Airlines

15 Jan

LHR3:35 p.m.London Heathrow

31h 00m

2 stops

SFO2:35 p.m.San Francisco

19 Jan

SFO4:40 p.m.San Francisco

20h 55m

2 stops

LHR9:35 p.m.London Heathrow

C$ 850

Find similar

British Airways flights from London Heathrow Airport to San Francisco

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

British Airways

12 Jan

LHR3:35 p.m.London Heathrow

26h 09m

1 stop

SFO9:44 a.m.San Francisco

28 Feb

SFO2:05 p.m.San Francisco

21h 55m

1 stop

LHR8:00 p.m.London Heathrow

C$ 844

Find similar

British Airways

21 Mar

LHR8:50 a.m.London Heathrow

14h 45m

1 stop

SFO4:35 p.m.San Francisco

10 Apr

SFO3:08 p.m.San Francisco

13h 07m

1 stop

LHR12:15 p.m.London Heathrow

C$ 861

Find similar

British Airways

24 Jun

LHR10:45 a.m.London Heathrow

11h 05m

SFO1:50 p.m.San Francisco

8 Jul

SFO4:35 p.m.San Francisco

10h 25m

LHR11:00 a.m.London Heathrow

C$ 864

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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

Tue 23/6

6:30 a.m.-12:40 p.m.

1 stop14h 10m

San Francisco

Fri 10/7

8:52 p.m.-12:20 p.m.

1 stop31h 28m

C$ 840

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 13/1

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

2 stops50h 45m

San Francisco

Sun 8/2

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

1 stop15h 20m

C$ 842

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 12/1

3:35 p.m.-9:44 a.m.

1 stop26h 09m

San Francisco

Sat 28/2

2:05 p.m.-8:00 p.m.

1 stop21h 55m

C$ 844

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 16/1

10:35 a.m.-12:47 a.m.

1 stop22h 12m

San Francisco

Mon 9/2

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

Nonstop10h 30m

C$ 845

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 13/1

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

2 stops50h 45m

San Francisco

Sat 17/1

4:40 p.m.-5:40 p.m.

1 stop17h 00m

C$ 846

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 25/5

12:40 p.m.-7:05 a.m.

2 stops26h 25m

San Francisco

Mon 1/6

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

1 stop14h 10m

C$ 848

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 13/1

10:05 a.m.-7:12 p.m.

1 stop17h 07m

San Francisco

Sat 21/2

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

Nonstop10h 30m

C$ 849

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 15/1

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

2 stops31h 00m

San Francisco

Mon 19/1

4:40 p.m.-9:35 p.m.

2 stops20h 55m

C$ 850

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 22/6

6:10 p.m.-8:11 p.m.

2 stops34h 01m

San Francisco

Sat 11/7

4:35 p.m.-11:00 a.m.

Nonstop10h 25m

C$ 852

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 13/4

6:30 a.m.-12:40 p.m.

1 stop14h 10m

San Francisco

Tue 21/4

2:40 p.m.-12:40 p.m.

1 stop14h 00m

C$ 855

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Showing 1-10 of 20 resultsSorted by cheapest first

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$ 775, 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$ 792.

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$ 794. On the other hand, Monday 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$ 1,849.

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

Flying to San Francisco from London Heathrow Airport 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 at noon when prices are around C$ 2,156.

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$ 932 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$ 876 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?

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

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

As of December 2025, prices for London Heathrow Airport to San Francisco flights are approximately 11% 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$ 2,939
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$ 2,939. The best round-trip flight deal from London Heathrow Airport to San Francisco found on momondo in the last 72 hours is C$ 1,644.

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 in San Francisco. From London Heathrow Airport there are direct flights to 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 00m, 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 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 (35.66% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (22.57%), Airbus A380-800 (18.44%), and Boeing 777-300ER (13.11%).

San Mateo

Belmont

Los Altos

San Bruno

Santa Cruz

Newark

Milpitas

Carmel-by-the-Sea

Turlock

South San Francisco

Palo Alto

Burlingame

Cupertino

Mill Valley

Morgan Hill

Los Banos

Pacifica

Mountain View

Woodland

Roseville

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$ 680

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Scandinavian Airlines flights from London Heathrow Airport to San Francisco

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momondo Fare Finder

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

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?

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

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

As of December 2025, prices for London Heathrow Airport to San Francisco flights are approximately 11% 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, Austrian Airlines, and SWISS 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 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 141 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 11% 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 28 per day as of December 2025. The most frequent departure time is 11:00a.m., with 72% 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 202 per week as of December 2025. The most frequent departure day is Tue, with 15% 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 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?

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