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

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

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

As of November 2025, 217 flights take off from London and land in San Francisco each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

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

As of November 2025, there are 31 flights per day flying from London to San Francisco. The most common time of day flights depart is 11:00, with 59% of flights taking off at midday.

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 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 stopovers. 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 licence, 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.

$676 Cheap Flights from London to San Francisco in 2025/26

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

Prices are currently typical for flights on this route. Typical prices usually range from $808 to $1,066. The lowest price recently found on this route was $862.

1 adult

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? Stopover? Instantly customise 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 return flights

Enter your travel dates to find the best prices.

16:40 - 14:45LGW-SFO

30h 05m1 stop

19:10 - 08:20SFO-LGW

29h 10m2 stops

$862TAP AIR PORTUGAL

Find Deal

Fri, 21 Nov - Fri, 28 Nov

16:00 - 16:05LGW-SFO

32h 05m1 stop

16:35 - 20:35SFO-LGW

20h 00m2 stops

$866TAP AIR PORTUGAL

Find Deal

Thu, 20 Nov - Mon, 1 Dec

06:40 - 14:35LHR-SFO

15h 55m1 stop

16:40 - 16:00SFO-LHR

15h 20m1 stop

$874Scandinavian Airlines

Find Deal

Sat, 21 Feb - Sun, 1 Mar

06:40 - 14:35LHR-SFO

15h 55m1 stop

16:40 - 18:50SFO-LHR

18h 10m2 stops

$876Scandinavian Airlines

Find Deal

Sat, 6 Dec - Mon, 12 Jan

09:00 - 16:30LHR-SFO

15h 30m1 stop

13:25 - 13:30SFO-LHR

16h 05m1 stop

$931United Airlines

Find Deal

Tue, 9 Dec - Tue, 13 Jan

13:45 - 16:30LHR-SFO

34h 45m1 stop

07:00 - 11:15SFO-LHR

20h 15m1 stop

$933United Airlines

Find Deal

Wed, 10 Dec - Wed, 17 Dec

18:40 - 17:30LGW-SFO

29h 50m1 stop

20:25 - 17:50SFO-LGW

14h 25m1 stop

$936SWISS

Find Deal

Tue, 10 Mar - Tue, 17 Mar

18:40 - 17:30LGW-SFO

29h 50m1 stop

20:25 - 17:50SFO-LGW

14h 25m1 stop

$940SWISS

Find Deal

Wed, 11 Mar - Wed, 18 Mar

06:30 - 12:50LHR-SFO

13h 20m1 stop

08:50 - 08:50SFO-LHR

16h 00m1 stop

$957Delta

Find Deal

Mon, 23 Mar - Fri, 10 Apr

06:30 - 11:50LHR-SFO

13h 20m1 stop

00:40 - 07:05SFO-LHR

22h 25m1 stop

$973Delta

Find Deal

Fri, 20 Feb - Sun, 22 Feb

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

21 Nov

LGW16:40London Gatwick

30h 05m

1 stop

SFO14:45San Francisco

28 Nov

SFO19:10San Francisco

29h 10m

2 stops

LGW08:20London Gatwick

$862

Find similar

TAP AIR PORTUGAL

20 Nov

LGW16:00London Gatwick

32h 05m

1 stop

SFO16:05San Francisco

1 Dec

SFO16:35San Francisco

20h 00m

2 stops

LGW20:35London Gatwick

$866

Find similar

TAP AIR PORTUGAL

4 Dec

LGW16:00London Gatwick

32h 05m

1 stop

SFO16:05San Francisco

8 Dec

SFO16:35San Francisco

20h 00m

2 stops

LGW20:35London Gatwick

$868

Find similar

Scandinavian Airlines flights from London to San Francisco

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

Scandinavian Airlines

21 Feb

LHR06:40London Heathrow

15h 55m

1 stop

SFO14:35San Francisco

1 Mar

SFO16:40San Francisco

15h 20m

1 stop

LHR16:00London Heathrow

$874

Find similar

Scandinavian Airlines

6 Dec

LHR06:40London Heathrow

15h 55m

1 stop

SFO14:35San Francisco

12 Jan

SFO16:40San Francisco

18h 10m

2 stops

LHR18:50London Heathrow

$876

Find similar

Scandinavian Airlines

21 Feb

LHR06:40London Heathrow

15h 55m

1 stop

SFO14:35San Francisco

1 Mar

SFO16:40San Francisco

17h 50m

1 stop

LHR18:30London Heathrow

$877

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Fri 21/11

16:40-14:45

1 stop30h 05m

San Francisco

Fri 28/11

19:10-08:20

2 stops29h 10m

$862

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Thu 20/11

16:00-16:05

1 stop32h 05m

San Francisco

Mon 1/12

16:35-20:35

2 stops20h 00m

$866

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 21/2

06:40-14:35

1 stop15h 55m

San Francisco

Sun 1/3

16:40-16:00

1 stop15h 20m

$874

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 6/12

06:40-14:35

1 stop15h 55m

San Francisco

Mon 12/1

16:40-18:50

2 stops18h 10m

$876

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 9/12

09:00-16:30

1 stop15h 30m

San Francisco

Tue 13/1

13:25-13:30

1 stop16h 05m

$931

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 10/12

13:45-16:30

1 stop34h 45m

San Francisco

Wed 17/12

07:00-11:15

1 stop20h 15m

$933

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Tue 10/3

18:40-17:30

1 stop29h 50m

San Francisco

Tue 17/3

20:25-17:50

1 stop14h 25m

$936

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Wed 11/3

18:40-17:30

1 stop29h 50m

San Francisco

Wed 18/3

20:25-17:50

1 stop14h 25m

$940

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 23/3

06:30-12:50

1 stop13h 20m

San Francisco

Fri 10/4

08:50-08:50

1 stop16h 00m

$957

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 20/2

06:30-11:50

1 stop13h 20m

San Francisco

Sun 22/2

00:40-07:05

1 stop22h 25m

$973

Flights are sorted by cheapest return 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?

If you aren’t able to travel during the month of September, then book flights to San Francisco from London during February instead. Flights to San Francisco in February, while not as cheap as those in September, still average around $891.

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

According to our data, Wednesday is the cheapest day to fly to San Francisco from London. The lowest ticket price found for a Wednesday departure recently was $1,032. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from London to San Francisco for around $2,188.

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

According to our data, the cheapest time of day to fly to San Francisco is in the morning. momondo users have found flights departing from London to San Francisco in the morning for as low as $1,027. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are $2,441 on average. Flights to San Francisco from London at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 $1,043 when searching weeks before you fly. 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 $966 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 23% 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 11% 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 return 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	$2,194
Fastest flight time	11h 00m
Direct flights	Every day
Airports in San Francisco	1 airport

The best flight deal from London to San Francisco found on momondo in the last 72 hours is $2,194

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 straight-line distance from London to San Francisco is 8609.4 km. Typically, this will take 13h 20m by plane in normal conditions.
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 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 stopovers. 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 licence, 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?
momondo data reveals that the most frequently booked plane model on the route from London to San Francisco is Boeing 777, representing 41.15% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 23.46%, Airbus A380-800 at 13.92%, and Boeing 777-300ER at 11.08%.

Redwood City

Sausalito

Carmel-by-the-Sea

Watsonville

Emeryville

San Mateo

Pacifica

Salinas

Burlingame

Pacific Grove

Pebble Beach

San Lorenzo

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. All flights to San Francisco from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from London to San Francisco?

Once you have performed a search for London to San Francisco flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from London to San Francisco right now. Can momondo alert me if prices change?

Price alerts on flights to San Francisco from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your San Francisco trip

We make it super easy to schedule, organise 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 9/12

Tue 16/12

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

Burbank Bob Hope Airport

Fresno Airterminal Airport

Los Angeles Airport

Long Beach Municipal Airport

Sacramento Intl Airport

Santa Ana J. Wayne/Orange Cnty Airport

Orange County Airport

Yosemite National Park Airport

San Francisco Bay Area Airport

Popular Cities in the United States

Look for other cheap flights to Los Angelesfrom $869

Look for other cheap flights to New Yorkfrom $1,074

Look for other cheap flights to Honolulufrom $831

Look for other cheap flights to Las Vegasfrom $1,063

Look for other cheap flights to Miamifrom $1,647

Look for other cheap flights to Orlandofrom $1,426

Look for other cheap flights to Chicagofrom $1,388

Look for other cheap flights to Dallasfrom $1,305

Look for other cheap flights to Washington, D.C.from $1,330

Look for other cheap flights to Bostonfrom $1,128

Look for other cheap flights to Seattlefrom $1,205

Look for other cheap flights to Atlantafrom $1,220

Cheap flights from London to San Francisco from $769

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 29/1. 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 return flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

TAP AIR PORTUGAL flights from London to San Francisco

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

Scandinavian Airlines flights from London to San Francisco

Our best Scandinavian Airlines 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?

If you aren’t able to travel during the month of September, then book flights to San Francisco from London during February instead. Flights to San Francisco in February, while not as cheap as those in September, still average around $891.

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 23% 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 11% more expensive when compared to flights at the same time last year.

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

United Airlines, British Airways, and Austrian Airlines 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 November 2025, there are 31 flights per day flying from London to San Francisco. The most common time of day flights depart is 11:00, with 59% of flights taking off at midday.

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

As of November 2025, 217 flights take off from London and land in San Francisco each week. The most common flight departure day for this route is Mon, with 14% of weekly flights 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 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?

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, organise 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