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.

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

United Airlines, SWISS, and JetBlue 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 15% 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.

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

According to our data, Air Canada has had the least delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

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$ 639 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 day?

The number of flights available between London Heathrow Airport and San Francisco is 31 per day as of October 2025. The most frequent departure time is 10:00a.m., with 61% of daily flights leaving in the afternoon.

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 222 per week as of October 2025. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

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Find the cheapest flights from London Heathrow Airport to San Francisco

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Enter your travel dates to find the best prices.

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

15h 55m1 stop

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

15h 20m1 stop

C$ 811Scandinavian Airlines

Find Deal

sáb., 21 feb. - dom., 1 mar.

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$ 814Scandinavian Airlines

Find Deal

sáb., 21 feb. - dom., 1 mar.

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

15h 55m1 stop

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

15h 45m2 stops

C$ 815Scandinavian Airlines

Find Deal

sáb., 21 feb. - dom., 1 mar.

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

15h 30m1 stop

12:43 a.m. - 7:30 a.m.SFO-LHR

22h 47m1 stop

C$ 866United Airlines

Find Deal

mié., 3 dic. - dom., 7 dic.

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

15h 30m1 stop

8:25 a.m. - 6:40 a.m.SFO-LHR

14h 15m1 stop

C$ 867United Airlines

Find Deal

mar., 18 nov. - mié., 3 dic.

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

18h 30m1 stop

7:25 p.m. - 5:50 p.m.SFO-LHR

14h 25m1 stop

C$ 886SWISS

Find Deal

mar., 4 nov. - jue., 4 dic.

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$ 911Delta

Find Deal

lun., 24 nov. - mar., 9 dic.

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$ 917Lufthansa

Find Deal

mar., 2 dic. - mié., 10 dic.

11:40 a.m. - 2:40 p.m.LHR-SFO

11h 00mdirect

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

10h 10mdirect

C$ 919Delta

Find Deal

lun., 24 nov. - mar., 9 dic.

7:00 a.m. - 4:30 p.m.LHR-SFO

17h 30m2 stops

7:25 p.m. - 5:50 p.m.SFO-LHR

14h 25m1 stop

C$ 921SWISS

Find Deal

lun., 17 nov. - lun., 1 dic.

United Airlines flights from London Heathrow Airport to San Francisco

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

United Airlines

3 Dec

LHR9:00 a.m.London Heathrow

15h 30m

1 stop

SFO4:30 p.m.San Francisco

7 Dec

SFO12:43 a.m.San Francisco

22h 47m

1 stop

LHR7:30 a.m.London Heathrow

C$ 866

Find similar

United Airlines

18 Nov

LHR9:00 a.m.London Heathrow

15h 30m

1 stop

SFO4:30 p.m.San Francisco

3 Dec

SFO8:25 a.m.San Francisco

14h 15m

1 stop

LHR6:40 a.m.London Heathrow

C$ 867

Find similar

United Airlines

24 Nov

LHR9:00 a.m.London Heathrow

15h 30m

1 stop

SFO4:30 p.m.San Francisco

9 Dec

SFO12:50 p.m.San Francisco

10h 35m

LHR7:25 a.m.London Heathrow

C$ 869

Find similar

SWISS flights from London Heathrow Airport to San Francisco

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

SWISS

4 Nov

LHR6:00 a.m.London Heathrow

18h 30m

1 stop

SFO4:30 p.m.San Francisco

4 Dec

SFO7:25 p.m.San Francisco

14h 25m

1 stop

LHR5:50 p.m.London Heathrow

C$ 886

Find similar

SWISS

17 Nov

LHR7:00 a.m.London Heathrow

17h 30m

2 stops

SFO4:30 p.m.San Francisco

1 Dec

SFO7:25 p.m.San Francisco

14h 25m

1 stop

LHR5:50 p.m.London Heathrow

C$ 921

Find similar

SWISS

4 Nov

LHR7:00 a.m.London Heathrow

17h 30m

2 stops

SFO4:30 p.m.San Francisco

4 Dec

SFO7:25 p.m.San Francisco

14h 25m

1 stop

LHR5:50 p.m.London Heathrow

C$ 935

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

sáb. 21/2

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

1 stop15h 55m

San Francisco

dom. 1/3

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

1 stop15h 20m

C$ 811

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

sáb. 21/2

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

1 stop15h 55m

San Francisco

dom. 1/3

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

1 stop17h 50m

C$ 814

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

sáb. 21/2

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

1 stop15h 55m

San Francisco

dom. 1/3

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

2 stops15h 45m

C$ 815

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

mié. 3/12

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

1 stop15h 30m

San Francisco

dom. 7/12

12:43 a.m.-7:30 a.m.

1 stop22h 47m

C$ 866

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

mar. 18/11

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

1 stop15h 30m

San Francisco

mié. 3/12

8:25 a.m.-6:40 a.m.

1 stop14h 15m

C$ 867

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

mar. 4/11

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

1 stop18h 30m

San Francisco

jue. 4/12

7:25 p.m.-5:50 p.m.

1 stop14h 25m

C$ 886

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

lun. 24/11

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

1 stop13h 20m

San Francisco

mar. 9/12

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

Nonstop10h 10m

C$ 911

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

mar. 2/12

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

Nonstop11h 15m

San Francisco

mié. 10/12

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

Nonstop10h 35m

C$ 916

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

lun. 24/11

11:40 a.m.-2:40 p.m.

Nonstop11h 00m

San Francisco

mar. 9/12

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

Nonstop10h 10m

C$ 919

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

lun. 17/11

7:00 a.m.-4:30 p.m.

2 stops17h 30m

San Francisco

lun. 1/12

7:25 p.m.-5:50 p.m.

1 stop14h 25m

C$ 921

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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$ 794, 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$ 815.

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$ 815. 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$ 1,894.

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$ 896 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$ 1,035.

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$ 949 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$ 883 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 29% 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 23% 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

Fastest flight time	11h 00m
Direct flights	Every day
Airports in San Francisco	1 airport

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 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 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 (41.01% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (24.31%), Airbus A380-800 (12.69%), and Boeing 777-300ER (10.58%).
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$ 893	Free Cancellation	Rating 7.4 8,988 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 18 times per week, with 8,988 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$ 893 (round-trip), much lower than the average airfare cost of C$ 893 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

Cupertino

Mill Valley

Morgan Hill

Los Banos

Mountain View

Pacifica

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$ 639

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Find the cheapest flights from London Heathrow Airport to San Francisco

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United Airlines flights from London Heathrow Airport to San Francisco

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SWISS flights from London Heathrow Airport to San Francisco

Our best SWISS 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 29% 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 23% 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 JetBlue 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 15% 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 Canada has had the least delays on this route over the last 12 months, with about 13% 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 31 per day as of October 2025. The most frequent departure time is 10:00a.m., with 61% of daily flights leaving in the afternoon.

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 222 per week as of October 2025. The most frequent departure day is Mon, with 17% 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

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