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 140 minutes.

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

Austrian Airlines, United Airlines, and British Airways are the most popular carriers operating from London 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 many flights depart from London to San Francisco on average per day?

As of November 2025, 30 flights take off from London and land in San Francisco each day. The most common flight departure time for this route is 11:00a.m., with 59% of daily flights taking off at noon.

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 12% of their flights experiencing any sort of delay.

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

211 flights are operational weekly from London to San Francisco as of November 2025. The most popular departure day for this route is Tue, 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 November 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$ 702 Cheap Flights from London to San Francisco in 2025/26

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

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

17h 00m1 stop

C$ 799Scandinavian Airlines

Find Deal

sáb., 21 feb. - dom., 1 mar.

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

15h 55m1 stop

5:40 p.m. - 6:50 p.m.SFO-LHR

18h 10m2 stops

C$ 803Scandinavian Airlines

Find Deal

sáb., 28 feb. - dom., 15 mar.

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

15h 55m1 stop

4:40 p.m. - 6:50 p.m.SFO-LHR

18h 10m2 stops

C$ 805Scandinavian Airlines

Find Deal

sáb., 6 dic. - lun., 12 ene.

11:40 a.m. - 3:40 p.m.LHR-SFO

11h 00mdirect

10:31 a.m. - 9:00 a.m.SFO-LHR

14h 29m1 stop

C$ 806Delta

Find Deal

lun., 23 mar. - mié., 8 abr.

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

31h 00m2 stops

5:40 p.m. - 6:50 p.m.SFO-LHR

18h 10m2 stops

C$ 809Scandinavian Airlines

Find Deal

sáb., 28 feb. - dom., 15 mar.

9:05 p.m. - 3:35 p.m.LHR-SFO

25h 30m2 stops

5:40 p.m. - 6:50 p.m.SFO-LHR

18h 10m2 stops

C$ 810Scandinavian Airlines

Find Deal

lun., 9 mar. - lun., 16 mar.

9:05 p.m. - 2:35 p.m.LHR-SFO

25h 30m2 stops

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

15h 45m2 stops

C$ 814Scandinavian Airlines

Find Deal

jue., 4 dic. - lun., 8 dic.

7:30 p.m. - 3:35 p.m.LHR-SFO

27h 05m1 stop

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

17h 00m1 stop

C$ 816Scandinavian Airlines

Find Deal

dom., 8 mar. - lun., 16 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$ 817Scandinavian Airlines

Find Deal

jue., 12 feb. - dom., 22 feb.

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$ 819Scandinavian Airlines

Find Deal

vie., 5 dic. - lun., 19 ene.

Scandinavian Airlines flights from London to San Francisco

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

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 00m

1 stop

LHR5:40 p.m.London Heathrow

C$ 799

Find similar

Scandinavian Airlines

28 Feb

LHR6:40 a.m.London Heathrow

15h 55m

1 stop

SFO2:35 p.m.San Francisco

15 Mar

SFO5:40 p.m.San Francisco

18h 10m

2 stops

LHR6:50 p.m.London Heathrow

C$ 803

Find similar

Scandinavian Airlines

6 Dec

LHR6:40 a.m.London Heathrow

15h 55m

1 stop

SFO2:35 p.m.San Francisco

12 Jan

SFO4:40 p.m.San Francisco

18h 10m

2 stops

LHR6:50 p.m.London Heathrow

C$ 805

Find similar

Delta flights from London to San Francisco

Our best Delta deals on London to San Francisco flight tickets

Delta

23 Mar

LHR11:40 a.m.London Heathrow

11h 00m

SFO3:40 p.m.San Francisco

8 Apr

SFO10:31 a.m.San Francisco

14h 29m

1 stop

LHR9:00 a.m.London Heathrow

C$ 806

Find similar

Delta

15 Feb

LHR6:30 a.m.London Heathrow

13h 20m

1 stop

SFO11:50 a.m.San Francisco

11 Aug

SFO9:00 p.m.San Francisco

15h 00m

1 stop

LHR8:00 p.m.London Heathrow

C$ 848

Find similar

Delta

17 Feb

LHR6:30 a.m.London Heathrow

13h 20m

1 stop

SFO11:50 a.m.San Francisco

24 Feb

SFO11:50 a.m.San Francisco

15h 50m

1 stop

LHR11:40 a.m.London Heathrow

C$ 852

Find similar

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.-5:40 p.m.

1 stop17h 00m

C$ 799

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

sáb. 28/2

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

1 stop15h 55m

San Francisco

dom. 15/3

5:40 p.m.-6:50 p.m.

2 stops18h 10m

C$ 803

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

sáb. 6/12

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

1 stop15h 55m

San Francisco

lun. 12/1

4:40 p.m.-6:50 p.m.

2 stops18h 10m

C$ 805

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

lun. 23/3

11:40 a.m.-3:40 p.m.

Nonstop11h 00m

San Francisco

mié. 8/4

10:31 a.m.-9:00 a.m.

1 stop14h 29m

C$ 806

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

sáb. 28/2

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

2 stops31h 00m

San Francisco

dom. 15/3

5:40 p.m.-6:50 p.m.

2 stops18h 10m

C$ 809

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

lun. 9/3

9:05 p.m.-3:35 p.m.

2 stops25h 30m

San Francisco

lun. 16/3

5:40 p.m.-6:50 p.m.

2 stops18h 10m

C$ 810

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

jue. 4/12

9:05 p.m.-2:35 p.m.

2 stops25h 30m

San Francisco

lun. 8/12

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

2 stops15h 45m

C$ 814

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

dom. 8/3

7:30 p.m.-3:35 p.m.

1 stop27h 05m

San Francisco

lun. 16/3

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

1 stop17h 00m

C$ 816

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

jue. 12/2

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

1 stop15h 55m

San Francisco

dom. 22/2

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

1 stop17h 50m

C$ 817

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

vie. 5/12

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

1 stop15h 55m

San Francisco

lun. 19/1

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

1 stop15h 20m

C$ 819

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

Delays

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 September. Flight prices, which tend to average around C$ 805, are often lower during this time because this is during the off-season. The month of February is another great option to travel to San Francisco, with average flight prices from London averaging around C$ 812.

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 Thursday. Travellers who choose to depart for San Francisco on a Thursday will often find tickets for as low as C$ 814. 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$ 1,892.

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$ 895 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$ 1,159.

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$ 950 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$ 880 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 November 2025, prices for London to San Francisco flights are approximately 12% 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$ 622
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 in the past 72 hours is C$ 622. The best round-trip flight deal from London to San Francisco found on momondo in the last 72 hours is C$ 1,489.

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

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 11h 00m, 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 November 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 (41.15% of total bookings). The next most popular plane models are Boeing 787-9 Dreamliner (23.46%), Airbus A380-800 (13.92%), and Boeing 777-300ER (11.08%).

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$ 892	Free Cancellation	Rating 7.4 9,029 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$ 892 round-trip. Over the 14 United Airlines flights for this route in a normal week, average airfare is usually C$ 892 round-trip - but some users have found much cheaper deals with momondo.

San Mateo

Belmont

Los Altos

San Bruno

Santa Cruz

Newark

Fremont

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?

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

sáb. 20/12

sáb. 27/12

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$ 95

Flights to Orlandofrom C$ 167

Flights to New Yorkfrom C$ 234

Flights to Las Vegasfrom C$ 136

Flights to Los Angelesfrom C$ 164

Flights to Miamifrom C$ 269

Flights to Honolulufrom C$ 322

Flights to Phoenixfrom C$ 164

Flights to Tampafrom C$ 214

Flights to Chicagofrom C$ 182

Flights to Houstonfrom C$ 221

Flights to Dallasfrom C$ 258

Fly to other destinations from London

Flights from London Gatwick to Montreal Pierre Elliott Trudeau Intl

Flights from London Gatwick to Toronto Pearson Intl

Flights from London Heathrow to Calgary

Flights from London Heathrow to Toronto Pearson Intl

Flights from London Heathrow to Montreal Pierre Elliott Trudeau Intl

Flights from London Heathrow to Halifax Intl

Cheap flights from London to San Francisco from C$ 702

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 4/1. 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

Scandinavian Airlines flights from London to San Francisco

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

Delta flights from London to San Francisco

Our best Delta 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 November 2025, prices for London to San Francisco flights are approximately 12% more expensive when compared to flights at the same time last year.

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

Austrian Airlines, United Airlines, and British Airways are the most popular carriers operating from London 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 140 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 12% of their flights experiencing any sort of delay.

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

As of November 2025, 30 flights take off from London and land in San Francisco each day. The most common flight departure time for this route is 11:00a.m., with 59% of daily flights taking off at noon.

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

211 flights are operational weekly from London to San Francisco as of November 2025. The most popular departure day for this route is Tue, 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