How many flights depart from London to San Francisco on average per day?

As of July 2025, 42 flights take off from London and land in San Francisco each day. The most common flight departure time for this route is 10:00a.m., with 58% of daily flights taking off in the afternoon.

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

LEVEL, TAP AIR PORTUGAL, and Lufthansa are the most popular carriers operating from London to San Francisco

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

295 flights are operational weekly from London to San Francisco as of July 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

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

The number of operators available for flights from London to San Francisco Airport is 1 as of July 2025.

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$ 527 Cheap Flights from London to San Francisco in 2025

1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from London to San Francisco

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

8:40 a.m. - 4:10 p.m.LHR-SFO

15h 30m1 stop

7:30 p.m. - 9:45 p.m.SFO-LHR

18h 15m1 stop

C$ 650SWISS

Find Deal

Mon, 15 Sep - Fri, 26 Sep

6:00 a.m. - 2:30 p.m.LHR-SFO

16h 30m1 stop

7:35 p.m. - 9:35 p.m.SFO-LHR

19h 00m1 stop

C$ 681TAP AIR PORTUGAL

Find Deal

Thu, 16 Oct - Sat, 25 Oct

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

27h 05m1 stop

4:40 p.m. - 7:55 p.m.SFO-LHR

19h 15m2 stops

C$ 691Scandinavian Airlines

Find Deal

Wed, 5 Nov - Mon, 10 Nov

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

27h 05m1 stop

4:40 p.m. - 7:55 p.m.SFO-LHR

19h 15m2 stops

C$ 693Scandinavian Airlines

Find Deal

Wed, 5 Nov - Mon, 10 Nov

7:25 a.m. - 7:00 p.m.LHR-SFO

19h 35m1 stop

1:05 p.m. - 7:25 a.m.SFO-LHR

10h 20mdirect

C$ 742United Airlines

Find Deal

Thu, 11 Sep - Thu, 18 Sep

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

15h 05m1 stop

1:25 p.m. - 11:10 a.m.SFO-LHR

13h 45m1 stop

C$ 747United Airlines

Find Deal

Thu, 11 Sep - Thu, 18 Sep

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

15h 05m1 stop

7:30 p.m. - 5:50 p.m.SFO-LHR

14h 20m1 stop

C$ 778

Find Deal

Mon, 1 Sep - Thu, 11 Sep

7:25 a.m. - 2:20 p.m.LHR-SFO

14h 55m1 stop

7:30 p.m. - 5:50 p.m.SFO-LHR

14h 20m1 stop

C$ 786

Find Deal

Sun, 24 Aug - Tue, 9 Sep

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

14h 30m1 stop

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

14h 00m1 stop

C$ 787Lufthansa

Find Deal

Fri, 19 Sep - Fri, 10 Oct

8:30 a.m. - 4:00 p.m.LHR-SFO

15h 30m1 stop

7:25 p.m. - 5:40 p.m.SFO-LHR

14h 15m1 stop

C$ 796Lufthansa

Find Deal

Fri, 5 Sep - Sat, 20 Sep

United Airlines flights from London to San Francisco

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

United Airlines

11 Sep

LHR7:25 a.m.London Heathrow

19h 35m

1 stop

SFO7:00 p.m.San Francisco

18 Sep

SFO1:05 p.m.San Francisco

10h 20m

LHR7:25 a.m.London Heathrow

C$ 742

Find similar

United Airlines

11 Sep

LHR7:25 a.m.London Heathrow

15h 05m

1 stop

SFO2:30 p.m.San Francisco

18 Sep

SFO1:25 p.m.San Francisco

13h 45m

1 stop

LHR11:10 a.m.London Heathrow

C$ 747

Find similar

United Airlines

25 Sep

LHR8:40 a.m.London Heathrow

15h 55m

1 stop

SFO4:35 p.m.San Francisco

9 Oct

SFO7:50 p.m.San Francisco

10h 20m

LHR2:10 p.m.London Heathrow

C$ 760

Find similar

TAP AIR PORTUGAL flights from London to San Francisco

Our best TAP AIR PORTUGAL deals on London to San Francisco flight tickets

TAP AIR PORTUGAL

16 Oct

LHR6:00 a.m.London Heathrow

16h 30m

1 stop

SFO2:30 p.m.San Francisco

25 Oct

SFO7:35 p.m.San Francisco

19h 00m

1 stop

LHR9:35 p.m.London Heathrow

C$ 681

Find similar

TAP AIR PORTUGAL

16 Oct

LHR6:00 a.m.London Heathrow

16h 30m

1 stop

SFO2:30 p.m.San Francisco

25 Oct

SFO7:35 p.m.San Francisco

19h 00m

1 stop

LHR9:35 p.m.London Heathrow

C$ 684

Find similar

TAP AIR PORTUGAL

8 Sep

LHR6:00 a.m.London Heathrow

16h 30m

1 stop

SFO2:30 p.m.San Francisco

16 Sep

SFO6:45 p.m.San Francisco

19h 15m

2 stops

LHR10:00 p.m.London Heathrow

C$ 702

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 15/9

8:40 a.m.-4:10 p.m.

1 stop15h 30m

San Francisco

Fri 26/9

7:30 p.m.-9:45 p.m.

1 stop18h 15m

C$ 650

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 16/10

6:00 a.m.-2:30 p.m.

1 stop16h 30m

San Francisco

Sat 25/10

7:35 p.m.-9:35 p.m.

1 stop19h 00m

C$ 681

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 5/11

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

1 stop27h 05m

San Francisco

Mon 10/11

4:40 p.m.-7:55 p.m.

2 stops19h 15m

C$ 691

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 5/11

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

1 stop27h 05m

San Francisco

Mon 10/11

4:40 p.m.-7:55 p.m.

2 stops19h 15m

C$ 693

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 11/9

7:25 a.m.-7:00 p.m.

1 stop19h 35m

San Francisco

Thu 18/9

1:05 p.m.-7:25 a.m.

Nonstop10h 20m

C$ 742

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 11/9

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

1 stop15h 05m

San Francisco

Thu 18/9

1:25 p.m.-11:10 a.m.

1 stop13h 45m

C$ 747

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 1/9

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

1 stop15h 05m

San Francisco

Thu 11/9

7:30 p.m.-5:50 p.m.

1 stop14h 20m

C$ 778

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 24/8

7:25 a.m.-2:20 p.m.

1 stop14h 55m

San Francisco

Tue 9/9

7:30 p.m.-5:50 p.m.

1 stop14h 20m

C$ 786

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 19/9

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

1 stop14h 30m

San Francisco

Fri 10/10

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

1 stop14h 00m

C$ 787

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 5/9

8:30 a.m.-4:00 p.m.

1 stop15h 30m

San Francisco

Sat 20/9

7:25 p.m.-5:40 p.m.

1 stop14h 15m

C$ 796

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

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$ 794, are often lower during this time because this is during the off-season. The month of November is another great option to travel to San Francisco, with average flight prices from London averaging around C$ 810.

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 Friday. Travellers who choose to depart for San Francisco on a Friday will often find tickets for as low as C$ 881. On the other hand, Saturday 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$ 1,868.

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

Flying to San Francisco from London at noon is the least expensive time of day to depart. momondo users have found prices as low as C$ 881 when looking at flights departing at noon. In contrast, the most expensive time of day to depart to San Francisco is in the afternoon when prices are around C$ 987.

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$ 940 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$ 865 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?

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

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

As of July 2025, prices for London to San Francisco flights are approximately 25% more expensive 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$ 527
Fastest flight time	10h 55m
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$ 527. The best round-trip flight deal from London to San Francisco found on momondo in the last 72 hours is C$ 650.

The fastest flight from London to San Francisco takes 10h 55m

Direct flights go from London to San Francisco every day.

There is 1 airport near San Francisco: 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 10h 55m, 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 many operators does momondo search for flights from London to San Francisco Airport?
The number of operators available for flights from London to San Francisco Airport is 1 as of July 2025.
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 (36.28% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (29.59%), Airbus A380-800 (13.04%), and Boeing 777-300ER (7.71%).

Best airlines flying from London to San Francisco

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom C$ 881	Free Cancellation	Rating 7.4 8,900 reviews		Search United Airlines flights

United Airlines Flights From London to San Francisco
United Airlines flight deals from London to San Francisco start from C$ 636 round-trip. Over the 21 United Airlines flights for this route in a normal week, average airfare is usually C$ 636 round-trip - but some users have found much cheaper deals with momondo.

San Mateo

Belmont

Los Altos

South San Francisco

Newark

San Bruno

Santa Cruz

Sunnyvale

Fremont

Turlock

Mountain View

Half Moon Bay

Mill Valley

Cupertino

Los Banos

Palo Alto

Pacifica

Carmel Valley

Berkeley

Roseville

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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Tue 5/8

Tue 12/8

Email me momondo's favourite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Airports servicing California

Popular Cities in the United States

Flights to Fort Lauderdalefrom C$ 166

Flights to Orlandofrom C$ 202

Flights to Las Vegasfrom C$ 165

Flights to New Yorkfrom C$ 210

Flights to Los Angelesfrom C$ 159

Flights to Miamifrom C$ 316

Flights to Honolulufrom C$ 322

Flights to Phoenixfrom C$ 208

Flights to Tampafrom C$ 183

Flights to Chicagofrom C$ 165

Flights to Dallasfrom C$ 325

Flights to Houstonfrom C$ 238

Fly to other destinations from London

Flights from London Gatwick to St John's

Flights from London Gatwick to Montreal Pierre Elliott Trudeau Intl

Flights from London Gatwick to Toronto Pearson Intl

Flights from London Gatwick to Halifax Intl

Flights from London Heathrow to Halifax Intl

Flights from London Heathrow to Montreal Pierre Elliott Trudeau Intl

Cheap flights from London to San Francisco from C$ 527

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 15/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from London to San Francisco

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

United Airlines flights from London to San Francisco

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

TAP AIR PORTUGAL flights from London to San Francisco

Our best TAP AIR PORTUGAL deals on London to San Francisco flight tickets

momondo Fare Finder

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

See travel insights to San Francisco from

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

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?

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

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

As of July 2025, prices for London to San Francisco flights are approximately 25% more expensive when compared to flights at the same time last year.

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

LEVEL, TAP AIR PORTUGAL, and Lufthansa are the most popular carriers operating from London to San Francisco

How many flights depart from London to San Francisco on average per day?

As of July 2025, 42 flights take off from London and land in San Francisco each day. The most common flight departure time for this route is 10:00a.m., with 58% of daily flights taking off in the afternoon.

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

295 flights are operational weekly from London to San Francisco as of July 2025. 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 many operators does momondo search 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?

Best airlines flying from London to San Francisco

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

United Airlines Flights 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