How long is the flight from London to San Francisco?

For as low as $882, Delta can have you in San Francisco from London in 16h 16m. The distance between London and San Francisco is about 8610 km. This flight may include one or multiple stops.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 inches per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

What are the most popular routes from London to San Francisco?

Most travellers choose London Stansted - San Francisco, London Luton - San Francisco or London Southend - San Francisco when deciding on the best route from London to San Francisco.

What are the cheapest flights from London to San Francisco?

Looking for the cheapest flight from London to San Francisco? While on average our users pay $1,326, our data indicates the cheapest price to be $946. The most popular route (London Stansted - San Francisco), is priced around $613.

What are the most reliable airlines from London to San Francisco?

Before booking your flight to San Francisco from London, have a look at the most reliable airlines to get you to your destination on time: Air Canada (75%), Austrian Airlines (75%), United Airlines( 75%).

What airport do you fly into for flights to San Francisco from London?

Located just 17.7 km from the city centre, San Francisco is the airport most travellers will use when flying to San Francisco from London. Booking flights from London to San Francisco (SFO) should be relatively easy as there are 34 daily inbound flights from London from 0 different airlines.

Can I find deals for flights from London to San Francisco that include hotel bookings?

Yes. In addition to deals on London to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to San Francisco?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to San Francisco.

Can I find deals for business class flights from London to San Francisco?

Yes. Cheapflights offers flight deals from London to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$690+ Cheap Flights from London to San Francisco

Cheapflights Tip: The best prices from London to San Francisco are usually found in February or November, booked 41 days in advance, depart on a Tuesday or Sunday and return on a Tuesday

Cheap flight deals from London to San Francisco

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from London to San Francisco
Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 September 2026.

Sun 6/1220:30 -

2 stops32h 03m

Sun 10/122:25 -

2 stops31h 50m

Deal found 31/8$847

Fri 13/1108:55 -

2 stops20h 39m

Thu 11/308:55 -

2 stops17h 45m

Deal found 31/8$853

Fri 18/1214:45 -

1 stop15h 17m

Wed 6/110:25 -

1 stop17h 55m

Deal found 31/8$857

Wed 16/909:25 -

2 stops17h 06m

Fri 23/1019:35 -

1 stop14h 15m

Deal found 31/8$858

Thu 12/1111:50 -

Nonstop11h 00m

Wed 10/316:40 -

Nonstop10h 15m

Deal found 31/8$860

Sun 8/1111:50 -

Nonstop11h 00m

Thu 11/316:40 -

Nonstop10h 15m

Deal found 31/8$861

Tue 10/1111:50 -

Nonstop11h 00m

Tue 9/316:40 -

Nonstop10h 15m

Deal found 31/8$863

Fri 25/1214:45 -

1 stop15h 17m

Sat 2/121:26 -

1 stop30h 54m

Deal found 1/9$865

Mon 21/1209:50 -

1 stop22h 16m

Thu 31/1205:45 -

1 stop17h 20m

Deal found 31/8$868

Mon 21/1209:50 -

1 stop22h 16m

Wed 6/116:40 -

Nonstop10h 15m

Deal found 31/8$870

Sun 6/1210:00 -

2 stops23h 19m

Sun 10/115:10 -

1 stop16h 35m

Deal found 31/8$874

Wed 4/1110:00 -

2 stops20h 15m

Wed 18/1110:38 -

2 stops21h 07m

Deal found 31/8$877

Best flights from London to San Francisco
Discover carefully curated flight deals from London to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Sat 31/1010:55 -

1 stop15h 47m

Tue 10/1114:47 -

1 stop12h 48m

Deal found 28/8$882

Sat 21/1116:45 -

1 stop28h 10m

Fri 27/1115:10 -

1 stop16h 35m

Deal found 27/8$899

Tue 22/919:15 -

1 stop29h 20m

Tue 29/914:25 -

1 stop14h 10m

Deal found 31/8$910

Fri 20/1116:40 -

1 stop30h 05m

Sat 28/1116:35 -

2 stops33h 30m

Deal found 27/8$944

Tue 27/1011:40 -

1 stop32h 05m

Fri 6/1113:45 -

1 stop36h 00m

Deal found 28/8$1,161

Wed 7/1021:50 -

2 stops29h 00m

Wed 14/1015:15 -

1 stop21h 50m

Deal found 1/9$1,185

Sat 3/1012:45 -

Nonstop11h 10m

Sat 10/1017:55 -

Nonstop10h 20m

Deal found 1/9$1,209

Mon 2/1110:55 -

1 stop38h 35m

Mon 16/1118:35 -

1 stop31h 20m

Deal found 29/8$1,396

Sun 20/910:45 -

Nonstop11h 05m

Sat 10/1019:30 -

Nonstop10h 25m

Deal found 31/8$1,602

Tue 27/1020:35 -

2 stops31h 53m

Wed 4/1107:30 -

2 stops28h 00m

Deal found 28/8$1,644

Sat 31/1010:55 -

1 stop15h 47m

Fri 6/1114:40 -

1 stop12h 55m

Deal found 28/8$882

Mon 21/919:15 -

1 stop29h 20m

Mon 28/914:25 -

1 stop14h 10m

Deal found 28/8$911

Wed 7/1017:50 -

1 stop25h 55m

Wed 14/1014:15 -

2 stops19h 05m

Deal found 1/9$911

Fri 9/1010:20 -

2 stops17h 26m

Sat 10/1016:45 -

2 stops19h 10m

Deal found 30/8$1,930

Wed 14/1009:25 -

1 stop14h 50m

Wed 28/1015:20 -

2 stops19h 30m

Deal found 30/8$913

Wed 14/1009:20 -

2 stops20h 55m

Wed 28/1014:50 -

1 stop18h 45m

Deal found 30/8$932

Tue 13/1012:10 -

2 stops58h 20m

Tue 20/1016:20 -

1 stop15h 15m

Deal found 28/8$1,100

Mon 30/1108:35 -

1 stop15h 55m

Mon 7/1214:20 -

2 stops19h 30m

Deal found 31/8$914

Tue 27/1011:40 -

1 stop32h 05m

Sat 7/1113:45 -

1 stop36h 00m

Deal found 28/8$1,163

Tue 27/1009:20 -

2 stops20h 18m

Sun 1/1113:50 -

1 stop19h 30m

Deal found 28/8$967

Thu 17/909:25 -

2 stops17h 06m

Fri 2/1014:40 -

2 stops19h 10m

Deal found 27/8$938

Mon 14/913:00 -

Nonstop11h 05m

Sun 27/912:55 -

Nonstop10h 30m

Deal found 1/9$1,287

Wed 28/1009:35 -

2 stops62h 30m

Sat 7/1116:35 -

2 stops33h 30m

Deal found 31/8$1,185

Tue 6/1009:20 -

2 stops21h 18m

Tue 20/1014:15 -

2 stops18h 25m

Deal found 28/8$983

Wed 18/1110:55 -

1 stop37h 35m

Mon 30/1118:35 -

1 stop31h 20m

Deal found 27/8$1,400

Thu 15/1009:15 -

2 stops17h 16m

Wed 28/1015:20 -

2 stops20h 10m

Deal found 28/8$966

Thu 4/217:20 -

1 stop31h 10m

Sat 13/218:35 -

1 stop31h 20m

Deal found 29/8$1,415

Thu 1/1008:25 -

2 stops23h 28m

Thu 8/1013:45 -

1 stop18h 55m

Deal found 31/8$1,069

Tue 22/921:25 -

2 stops35h 31m

Tue 29/907:40 -

3 stops20h 15m

Deal found 31/8$1,471

Thu 10/1208:30 -

1 stop16h 00m

Thu 24/1214:20 -

2 stops19h 30m

Deal found 28/8$1,048

Find flight deals from London to San Francisco

Round-trip from	$847
One-way from	$690
Popular in	December
Cheapest in	February
Average price	$932
Good round-trip deal	$946 or less

British Airways
6/12-10/1
4 total stops
63h 53m total
London to San Francisco

Search Deals

SWISS
26/10
2 total stops
53h 00m total
London to San Francisco

Search Deals

Highest demand for flights based on searches. 0% potential increase in price ($0 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($21 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Price to beat on a round-trip flight from London (LON) to San Francisco.

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Sat 31/10

10:55-19:42

1 stop15h 47m

San Francisco

Tue 10/11

14:47-11:35

1 stop12h 48m

$882

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Sat 31/10

10:55-19:42

1 stop15h 47m

San Francisco

Fri 6/11

14:40-11:35

1 stop12h 55m

$882

LondonSan Francisco

LGW London Gatwick - SFO San Francisco

LGWSFO

London Gatwick

Sat 21/11

16:45-12:55

1 stop28h 10m

San Francisco

Fri 27/11

15:10-15:45

1 stop16h 35m

$899

LondonSan Francisco

LCY London City - SFO San Francisco

LCYSFO

London City

Tue 22/9

19:15-16:35

1 stop29h 20m

San Francisco

Tue 29/9

14:25-12:35

1 stop14h 10m

$910

LondonSan Francisco

LCY London City - SFO San Francisco

LCYSFO

London City

Mon 21/9

19:15-16:35

1 stop29h 20m

San Francisco

Mon 28/9

14:25-12:35

1 stop14h 10m

$911

LondonSan Francisco

LCY London City - SFO San Francisco

LCYSFO

London City

Wed 7/10

17:50-11:45

1 stop25h 55m

San Francisco

Wed 14/10

14:15-17:20

2 stops19h 05m

$911

LondonSan Francisco

LGW London Gatwick - SFO San Francisco

LGWSFO

London Gatwick

Wed 14/10

09:25-16:15

1 stop14h 50m

San Francisco

Wed 28/10

15:20-17:50

2 stops19h 30m

$913

LondonSan Francisco

LGW London Gatwick - SFO San Francisco

LGWSFO

London Gatwick

Mon 30/11

08:35-16:30

1 stop15h 55m

San Francisco

Mon 7/12

14:20-17:50

2 stops19h 30m

$914

LondonSan Francisco

LCY London City - SFO San Francisco

LCYSFO

London City

Wed 14/10

09:20-22:15

2 stops20h 55m

San Francisco

Wed 28/10

14:50-16:35

1 stop18h 45m

$932

LondonSan Francisco

LGW London Gatwick - SFO San Francisco

LGWSFO

London Gatwick

Thu 17/9

09:25-18:31

2 stops17h 06m

San Francisco

Fri 2/10

14:40-17:50

2 stops19h 10m

$938

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from London to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from London with our price prediction graph.

LON-SFO

LGW-SFO

LHR-SFO

LCY-SFO

LTN-SFO

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to San Francisco

LON-SFO

LGW-SFO

LHR-SFO

LCY-SFO

LTN-SFO

What is the cheapest month to book a flight from London to San Francisco?

Currently, February is the cheapest month in which you can book a flight from London to San Francisco (average of $818). Flying from London to San Francisco in December is currently the most expensive (average of $1,192). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to SFO?

When flying from London to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London to San Francisco

The most flights from LON to SFO are scheduled on a Monday (38 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (30 on average).

How much does it cost for a return flight from London to San Francisco?

Airfare is typical for this route at the moment.

London to San Francisco flights typically cost between $804 and $1,064 in December.
The cheapest return price found within the last 5 days was $847 on British Airways (6 Dec–10 Jan).

How often are flights from London to San Francisco delayed?

About 13% of weekly flights between London and San Francisco have experienced delays in the past year, with the average delay time being 143 minutes.

What is the most punctual flight time for London to San Francisco flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Friday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

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

Over the past year, United Airlines have had the lowest number of delays on this route, with just 12% of flights being delayed.

How far ahead should I book a flight from London to San Francisco?

The best time to book flights from London to San Francisco is 22 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

What airport do you fly into for flights to San Francisco from London?
Located just 17.7 km from the city centre, San Francisco is the airport most travellers will use when flying to San Francisco from London. Booking flights from London to San Francisco (SFO) should be relatively easy as there are 34 daily inbound flights from London from 0 different airlines.
How long is the flight from London to San Francisco?
For as low as $882, Delta can have you in San Francisco from London in 16h 16m. The distance between London and San Francisco is about 8610 km. This flight may include one or multiple stops.
What are the most popular routes from London to San Francisco?
Most travellers choose London Stansted - San Francisco, London Luton - San Francisco or London Southend - San Francisco when deciding on the best route from London to San Francisco.
What are the most reliable airlines from London to San Francisco?
Before booking your flight to San Francisco from London, have a look at the most reliable airlines to get you to your destination on time: Air Canada (75%), Austrian Airlines (75%), United Airlines( 75%).
What are the cheapest flights from London to San Francisco?
Looking for the cheapest flight from London to San Francisco? While on average our users pay $1,326, our data indicates the cheapest price to be $946. The most popular route (London Stansted - San Francisco), is priced around $613.
Can I find deals for flights from London to San Francisco that include hotel bookings?
Yes. In addition to deals on London to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to San Francisco.
Can I find deals for business class flights from London to San Francisco?
Yes. Cheapflights offers flight deals from London to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London to San Francisco?
Currently, February is the cheapest month in which you can book a flight from London to San Francisco (average of $818). Flying from London to San Francisco in December is currently the most expensive (average of $1,192). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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How does Cheapflights help users find flights from London to San Francisco?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to San Francisco. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from London to San Francisco?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Francisco from London.

Can Cheapflights find flights from London to San Francisco with no change fees?

Certainly. Search results for flights to San Francisco from London shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from London to San Francisco become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco from London today and book when prices fit your budget.

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Cheap flights from London to San Francisco from $690

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to San Francisco

Cheapest flights from London to San FranciscoExplore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 September 2026.

Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 September 2026.

Best flights from London to San FranciscoDiscover carefully curated flight deals from London to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Discover carefully curated flight deals from London to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Direct flights from London to San FranciscoExplore direct flight options from London to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 1 September 2026.

Explore direct flight options from London to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 1 September 2026.

Last-minute flights from London to San FranciscoDiscover last-minute flight deals from London to San Francisco. Data last updated 1 September 2026 and is based on user searches.

Discover last-minute flight deals from London to San Francisco. Data last updated 1 September 2026 and is based on user searches.

One-way flights from London to San FranciscoSearch for one-way flight options from London to San Francisco. Find affordable one-way fares based on user searches. Data last updated 1 September 2026.

Search for one-way flight options from London to San Francisco. Find affordable one-way fares based on user searches. Data last updated 1 September 2026.

Find flight deals from London to San Francisco

Round-trip from

One-way from

Popular in

Cheapest in

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Good round-trip deal

Cheapflights Fare Finder

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

Best time to book a flight from London to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from London with our price prediction graph.

Cheapflights Insights

What is the cheapest month to book a flight from London to San Francisco?

What is the cheapest time of day to fly from LON to SFO?

Find hourly flight availability from London to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 1 September 2026.

When flying from London to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London to San Francisco

The most flights from LON to SFO are scheduled on a Monday (38 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (30 on average).

How much does it cost for a return flight from London to San Francisco?

Airfare is typical for this route at the moment.

London to San Francisco flights typically cost between $804 and $1,064 in December.The cheapest return price found within the last 5 days was $847 on British Airways (6 Dec–10 Jan).

How often are flights from London to San Francisco delayed?

About 13% of weekly flights between London and San Francisco have experienced delays in the past year, with the average delay time being 143 minutes.

What is the most punctual flight time for London to San Francisco flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Friday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

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

Over the past year, United Airlines have had the lowest number of delays on this route, with just 12% of flights being delayed.

How far ahead should I book a flight from London to San Francisco?

The best time to book flights from London to San Francisco is 22 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Related info for your journey

What airport do you fly into for flights to San Francisco from London?

How long is the flight from London to San Francisco?

What are the most popular routes from London to San Francisco?

What are the most reliable airlines from London to San Francisco?

What are the cheapest flights from London to San Francisco?

Can I find deals for flights from London to San Francisco that include hotel bookings?

How can I find direct flights from London to San Francisco?

Can I find deals for business class flights from London to San Francisco?

What is the cheapest month to book a flight from London to San Francisco?

Travelling to a place near San Francisco?

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Complete your trip

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London and San Francisco flights

Browse other London and San Francisco flight options. Last updated on 1 September 2026.

Other flights from London

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How does Cheapflights help users find flights from London to San Francisco?

Why should you use Cheapflights to find cheap flight tickets from London to San Francisco?

Can Cheapflights find flights from London to San Francisco with no change fees?

Can Cheapflights notify me if prices for flights from London to San Francisco become cheaper?

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Cheapest flights from London to San Francisco
Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 September 2026.

Best flights from London to San Francisco
Discover carefully curated flight deals from London to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 1 September 2026.

Direct flights from London to San Francisco
Explore direct flight options from London to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 1 September 2026.

Last-minute flights from London to San Francisco
Discover last-minute flight deals from London to San Francisco. Data last updated 1 September 2026 and is based on user searches.

One-way flights from London to San Francisco
Search for one-way flight options from London to San Francisco. Find affordable one-way fares based on user searches. Data last updated 1 September 2026.

London to San Francisco flights typically cost between $804 and $1,064 in December.
The cheapest return price found within the last 5 days was $847 on British Airways (6 Dec–10 Jan).