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

British Airways, United Airlines, and SWISS 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.

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 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.

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$ 682 Cheap Flights from London Heathrow Airport to San Francisco in 2025/26

Q: What is the typical price of a round-trip flight between London Heathrow Airport and San Francisco?

Prices are currently low for flights on this route. Typical prices usually range from C$ 949 to C$ 1,455. The lowest price recently found on this route was C$ 867.

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Find the cheapest flights from London Heathrow Airport to San Francisco

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

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

LHR

SFO

15h 30m1 stop

12:00 p.m. - 11:20 a.m.

SFO

LHR

16h 20m1 stop

C$ 867United Airlines

Tue, 3 Mar - Thu, 26 Mar

8:05 a.m. - 5:09 p.m.

LHR

SFO

17h 04m1 stop

8:45 a.m. - 9:30 a.m.

SFO

LHR

16h 45m1 stop

C$ 869JetBlue

Sat, 10 Jan - Sat, 24 Jan

7:30 p.m. - 2:35 p.m.

LHR

SFO

27h 05m1 stop

4:40 p.m. - 2:35 p.m.

SFO

LHR

37h 55m2 stops

C$ 873Scandinavian Airlines

Fri, 16 Jan - Thu, 22 Jan

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

LHR

SFO

19h 40m2 stops

5:00 a.m. - 10:15 a.m.

SFO

LHR

21h 15m1 stop

C$ 874United Airlines

Mon, 12 Jan - Mon, 9 Feb

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

LHR

SFO

14h 25m1 stop

2:30 p.m. - 11:50 a.m.

SFO

LHR

13h 20m1 stop

C$ 876United Airlines

Mon, 2 Mar - Mon, 30 Mar

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

LHR

SFO

16h 00m1 stop

4:45 p.m. - 6:50 p.m.

SFO

LHR

18h 05m2 stops

C$ 881Scandinavian Airlines

Mon, 6 Apr - Mon, 27 Apr

4:40 p.m. - 2:50 p.m.

LHR

SFO

30h 10m1 stop

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

SFO

LHR

10h 35mdirect

C$ 883United Airlines

Mon, 12 Jan - Mon, 26 Jan

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

LHR

SFO

14h 10m1 stop

7:40 p.m. - 2:10 p.m.

SFO

LHR

10h 30mdirect

C$ 890Multiple Airlines

Mon, 4 May - Tue, 19 May

8:30 a.m. - 4:05 p.m.

LHR

SFO

15h 35m1 stop

11:10 a.m. - 9:40 a.m.

SFO

LHR

14h 30m1 stop

C$ 892United Airlines

Mon, 4 May - Tue, 19 May

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

LHR

SFO

14h 10m1 stop

1:50 p.m. - 7:25 a.m.

SFO

LHR

10h 35mdirect

C$ 895Lufthansa

Mon, 2 Mar - Thu, 26 Mar

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

1 Mar

LHR11:45 a.m.London Heathrow

11h 15m

SFO3:00 p.m.San Francisco

9 Mar

SFO9:40 p.m.San Francisco

10h 30m

LHR3:10 p.m.London Heathrow

C$ 936

Find similar

British Airways

23 Feb

LHR11:45 a.m.London Heathrow

11h 15m

SFO3:00 p.m.San Francisco

28 Mar

SFO7:30 p.m.San Francisco

10h 25m

LHR1:55 p.m.London Heathrow

C$ 939

Find similar

British Airways

28 Feb

LHR11:45 a.m.London Heathrow

11h 15m

SFO3:00 p.m.San Francisco

28 Mar

SFO7:30 p.m.San Francisco

10h 25m

LHR1:55 p.m.London Heathrow

C$ 946

Find similar

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 Mar

LHR9:00 a.m.London Heathrow

15h 30m

1 stop

SFO4:30 p.m.San Francisco

26 Mar

SFO12:00 p.m.San Francisco

16h 20m

1 stop

LHR11:20 a.m.London Heathrow

C$ 867

Find similar

United Airlines

12 Jan

LHR8:30 a.m.London Heathrow

19h 40m

2 stops

SFO8:10 p.m.San Francisco

9 Feb

SFO5:00 a.m.San Francisco

21h 15m

1 stop

LHR10:15 a.m.London Heathrow

C$ 874

Find similar

United Airlines

2 Mar

LHR9:30 a.m.London Heathrow

14h 25m

1 stop

SFO3:55 p.m.San Francisco

30 Mar

SFO2:30 p.m.San Francisco

13h 20m

1 stop

LHR11:50 a.m.London Heathrow

C$ 876

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

Tue 3/3

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

1 stop15h 30m

San Francisco

Thu 26/3

12:00 p.m.-11:20 a.m.

1 stop16h 20m

C$ 867

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 10/1

8:05 a.m.-5:09 p.m.

1 stop17h 04m

San Francisco

Sat 24/1

8:45 a.m.-9:30 a.m.

1 stop16h 45m

C$ 869

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 16/1

7:30 p.m.-2:35 p.m.

1 stop27h 05m

San Francisco

Thu 22/1

4:40 p.m.-2:35 p.m.

2 stops37h 55m

C$ 873

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 12/1

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

2 stops19h 40m

San Francisco

Mon 9/2

5:00 a.m.-10:15 a.m.

1 stop21h 15m

C$ 874

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 2/3

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

1 stop14h 25m

San Francisco

Mon 30/3

2:30 p.m.-11:50 a.m.

1 stop13h 20m

C$ 876

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 6/4

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

1 stop16h 00m

San Francisco

Mon 27/4

4:45 p.m.-6:50 p.m.

2 stops18h 05m

C$ 881

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 12/1

4:40 p.m.-2:50 p.m.

1 stop30h 10m

San Francisco

Mon 26/1

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

Nonstop10h 35m

C$ 883

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 4/5

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

1 stop14h 10m

San Francisco

Tue 19/5

7:40 p.m.-2:10 p.m.

Nonstop10h 30m

C$ 890

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 4/5

8:30 a.m.-4:05 p.m.

1 stop15h 35m

San Francisco

Tue 19/5

11:10 a.m.-9:40 a.m.

1 stop14h 30m

C$ 892

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 2/3

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

1 stop14h 10m

San Francisco

Thu 26/3

1:50 p.m.-7:25 a.m.

Nonstop10h 35m

C$ 895

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 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 typical price of a round-trip flight between London Heathrow Airport and San Francisco?

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$ 779, 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$ 797.

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$ 800. 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$ 1,862.

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$ 982 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$ 2,171.

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$ 938 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?

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 10% 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$ 2,959
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$ 2,959. The best round-trip flight deal from London Heathrow Airport to San Francisco found on momondo in the last 72 hours is C$ 1,648.

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 (36.92% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (23.19%), Airbus A380-800 (17.55%), and Boeing 777-300ER (12.34%).

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?

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$ 682

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Find the cheapest flights from London Heathrow Airport to San Francisco

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British Airways flights from London Heathrow Airport to San Francisco

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

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

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 typical price of a round-trip flight between London Heathrow Airport 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 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 10% 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?

British Airways, United 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 29 per day as of December 2025. The most frequent departure time is 11:00a.m., with 59% 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 209 per week as of December 2025. The most frequent departure day is Mon, 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