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

26 flights are operational daily from London to San Francisco as of October 2026. The most popular departure time for this route is 10:00, with 65% of flights per day taking off in the afternoon.

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

According to our data, United Airlines have had the fewest delays on this route over the last 12 months, with about 11% of their flights experiencing any sort of delay.

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

Friday is statistically the day of the week that experiences the fewest delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

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

The number of flights available between London and San Francisco is 187 per week as of October 2026. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

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

United Airlines and Austrian Airlines 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 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 144 minutes.

When did momondo last update prices for flights from London to San Francisco Airport?

Prices for flights from London to San Francisco Airport are refreshed on a daily basis.

How old do you have to be to fly from London to San Francisco Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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 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 licence 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.

R9 006 Cheap Flights from London to San Francisco in 2026/27

Find the cheapest flights from London to San Francisco

Return

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

14:45 - 20:47LHR London Heathrow-SFO San Francisco

14h 02m1 stop Seattle/Tacoma Intl

6:00 - 12:20SFO San Francisco-LHR London Heathrow

22h 20m1 stop Seattle/Tacoma Intl

R9 505Alaska Airlines

Mon, Nov 9 - Mon, Nov 23

14:45 - 20:47LHR London Heathrow-SFO San Francisco

14h 02m1 stop Seattle/Tacoma Intl

6:00 - 12:20SFO San Francisco-LHR London Heathrow

22h 20m1 stop Seattle/Tacoma Intl

R9 538Alaska Airlines

Wed, Nov 18 - Mon, Nov 23

14:45 - 21:43LHR London Heathrow-SFO San Francisco

14h 58m1 stop Seattle/Tacoma Intl

12:39 - 12:20SFO San Francisco-LHR London Heathrow

15h 41m1 stop Seattle/Tacoma Intl

R9 555Alaska Airlines

Sun, Nov 8 - Mon, Dec 7

14:45 - 21:43LHR London Heathrow-SFO San Francisco

14h 58m1 stop Seattle/Tacoma Intl

7:00 - 12:20SFO San Francisco-LHR London Heathrow

21h 20m1 stop Seattle/Tacoma Intl

R9 572Alaska Airlines

Mon, Nov 23 - Wed, Dec 9

14:45 - 21:40LHR London Heathrow-SFO San Francisco

14h 55m1 stop Seattle/Tacoma Intl

14:12 - 12:20SFO San Francisco-LHR London Heathrow

14h 08m1 stop Seattle/Tacoma Intl

R9 588Alaska Airlines

Wed, Feb 3 - Sat, Feb 6

14:45 - 21:40LHR London Heathrow-SFO San Francisco

14h 55m1 stop Seattle/Tacoma Intl

14:12 - 12:20SFO San Francisco-LHR London Heathrow

14h 08m1 stop Seattle/Tacoma Intl

R9 622Alaska Airlines

Wed, Feb 3 - Sat, Feb 6

14:45 - 21:40LHR London Heathrow-SFO San Francisco

14h 55m1 stop Seattle/Tacoma Intl

14:12 - 12:20SFO San Francisco-LHR London Heathrow

14h 08m1 stop Seattle/Tacoma Intl

R9 638Alaska Airlines

Wed, Feb 3 - Sat, Feb 6

14:45 - 20:47LHR London Heathrow-SFO San Francisco

14h 02m1 stop Seattle/Tacoma Intl

14:45 - 12:20SFO San Francisco-LHR London Heathrow

13h 35m1 stop Seattle/Tacoma Intl

R9 655Alaska Airlines

Mon, Nov 9 - Thu, Mar 4

14:45 - 22:46LHR London Heathrow-SFO San Francisco

16h 01m1 stop Seattle/Tacoma Intl

12:39 - 12:20SFO San Francisco-LHR London Heathrow

15h 41m1 stop Seattle/Tacoma Intl

R9 688Alaska Airlines

Sat, Nov 21 - Sat, Dec 5

14:45 - 20:47LHR London Heathrow-SFO San Francisco

14h 02m1 stop Seattle/Tacoma Intl

9:40 - 12:20SFO San Francisco-LHR London Heathrow

18h 40m1 stop Seattle/Tacoma Intl

R9 705Alaska Airlines

Tue, Nov 10 - Wed, Dec 2

Cheap last-minute flights

Enter your travel dates to find the best prices.

14:45 - 20:47LHR London Heathrow-SFO San Francisco

14h 02m1 stop Seattle/Tacoma Intl

12:13 - 12:20SFO San Francisco-LHR London Heathrow

16h 07m1 stop Seattle/Tacoma Intl

R9 505Alaska Airlines

Wed, Nov 4 - Wed, Nov 11

14:45 - 21:43LHR London Heathrow-SFO San Francisco

14h 58m1 stop Seattle/Tacoma Intl

12:13 - 12:20SFO San Francisco-LHR London Heathrow

16h 07m1 stop Seattle/Tacoma Intl

R9 555Alaska Airlines

Tue, Nov 3 - Mon, Nov 9

14:45 - 21:43LHR London Heathrow-SFO San Francisco

14h 58m1 stop Seattle/Tacoma Intl

12:13 - 12:20SFO San Francisco-LHR London Heathrow

16h 07m1 stop Seattle/Tacoma Intl

R9 688Alaska Airlines

Wed, Nov 4 - Mon, Nov 9

14:45 - 21:43LHR London Heathrow-SFO San Francisco

14h 58m1 stop Seattle/Tacoma Intl

12:13 - 12:20SFO San Francisco-LHR London Heathrow

16h 07m1 stop Seattle/Tacoma Intl

R9 705Alaska Airlines

Wed, Nov 4 - Mon, Nov 9

14:45 - 21:43LHR London Heathrow-SFO San Francisco

14h 58m1 stop Seattle/Tacoma Intl

12:39 - 12:20SFO San Francisco-LHR London Heathrow

15h 41m1 stop Seattle/Tacoma Intl

R11 802Alaska Airlines

Wed, Nov 4 - Mon, Dec 14

14:45 - 21:43LHR London Heathrow-SFO San Francisco

14h 58m1 stop Seattle/Tacoma Intl

10:40 - 12:20SFO San Francisco-LHR London Heathrow

17h 40m1 stop Seattle/Tacoma Intl

R11 819Alaska Airlines

Tue, Nov 3 - Sun, Dec 13

14:45 - 20:47LHR London Heathrow-SFO San Francisco

14h 02m1 stop Seattle/Tacoma Intl

9:40 - 12:20SFO San Francisco-LHR London Heathrow

18h 40m1 stop Seattle/Tacoma Intl

R11 852Alaska Airlines

Mon, Nov 2 - Sun, Dec 13

6:40 - 14:50LHR London Heathrow-SFO San Francisco

16h 10m1 stop Kastrup Copenhagen

16:45 - 16:00SFO San Francisco-LHR London Heathrow

15h 15m1 stop Kastrup Copenhagen

R13 301Scandinavian Airlines

Mon, Nov 2 - Tue, Nov 17

10:35 - 14:50LHR London Heathrow-SFO San Francisco

36h 15m2 stops Oslo Gardermoen Kastrup Copenhagen

16:45 - 17:40SFO San Francisco-LHR London Heathrow

16h 55m1 stop Kastrup Copenhagen

R13 367Scandinavian Airlines

Tue, Nov 3 - Mon, Nov 16

15:35 - 14:50LHR London Heathrow-SFO San Francisco

31h 15m2 stops Oslo Gardermoen Kastrup Copenhagen

16:45 - 21:35SFO San Francisco-LHR London Heathrow

20h 50m2 stops Kastrup Copenhagen Oslo Gardermoen

R13 434Scandinavian Airlines

Tue, Nov 3 - Mon, Nov 16

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Alaska Airlines flights from London to San Francisco

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

Alaska Airlines

Nov 9

LHR14:45London Heathrow

14h 02m

1 stop

SFO20:47San Francisco

Nov 23

SFO6:00San Francisco

22h 20m

1 stop

LHR12:20London Heathrow

R9 505

Alaska Airlines

Nov 18

LHR14:45London Heathrow

14h 02m

1 stop

SFO20:47San Francisco

Nov 23

SFO6:00San Francisco

22h 20m

1 stop

LHR12:20London Heathrow

R9 538

Alaska Airlines

Nov 8

LHR14:45London Heathrow

14h 58m

1 stop

SFO21:43San Francisco

Dec 3

SFO12:39San Francisco

15h 41m

1 stop

LHR12:20London Heathrow

R9 555

Delta flights from London to San Francisco

Our best Delta deals on London to San Francisco flight tickets

Delta

Dec 25

LHR17:20London Heathrow

26h 30m

1 stop

SFO11:50San Francisco

Dec 30

SFO23:59San Francisco

23h 06m

1 stop

LHR7:05London Heathrow

R10 637

Delta

Dec 25

LHR6:30London Heathrow

19h 08m

2 stops

SFO17:38San Francisco

Jan 7

SFO11:45San Francisco

15h 55m

1 stop

LHR11:40London Heathrow

R10 820

Delta

Jan 10

LHR8:55London Heathrow

19h 54m

1 stop

SFO20:49San Francisco

Jan 22

SFO18:34San Francisco

13h 56m

1 stop

LHR16:30London Heathrow

R10 854

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Mon 9/11

14:45-20:47

1 stop14h 02m

San Francisco

Mon 23/11

6:00-12:20

1 stop22h 20m

R9 505

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Wed 18/11

14:45-20:47

1 stop14h 02m

San Francisco

Mon 23/11

6:00-12:20

1 stop22h 20m

R9 538

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Sun 8/11

14:45-21:43

1 stop14h 58m

San Francisco

Mon 7/12

12:39-12:20

1 stop15h 41m

R9 555

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Mon 23/11

14:45-21:43

1 stop14h 58m

San Francisco

Wed 9/12

7:00-12:20

1 stop21h 20m

R9 572

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Wed 3/2

14:45-21:40

1 stop14h 55m

San Francisco

Sat 6/2

14:12-12:20

1 stop14h 08m

R9 588

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Wed 3/2

14:45-21:40

1 stop14h 55m

San Francisco

Sat 6/2

14:12-12:20

1 stop14h 08m

R9 622

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Wed 3/2

14:45-21:40

1 stop14h 55m

San Francisco

Sat 6/2

14:12-12:20

1 stop14h 08m

R9 638

Fastest return journey

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Mon 9/11

14:45-20:47

1 stop14h 02m

San Francisco

Thu 4/3

14:45-12:20

1 stop13h 35m

R9 655

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Sat 21/11

14:45-22:46

1 stop16h 01m

San Francisco

Sat 5/12

12:39-12:20

1 stop15h 41m

R9 688

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Tue 10/11

14:45-20:47

1 stop14h 02m

San Francisco

Wed 2/12

9:40-12:20

1 stop18h 40m

R9 705

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

Delays

Other information

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 R9 455 to R13 034.
The lowest price recently found on this route was R9 505.

What is the cheapest month to fly to San Francisco?

If you’re not able to fly to San Francisco in February, then November is your next best option. Flight prices from London to San Francisco during November average around R11 236.

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 from London 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 R12 316 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 R11 286 on momondo.

What cabin class options are available on London to San Francisco flights?

There is only 1 cabin class 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.

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

As of October 2026, 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	R9 006
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 R9 006. The best return flight deal from London to San Francisco found on momondo in the last 72 hours is R9 505.

Direct flights go from London to San Francisco every day.

There is 1 airport in San Francisco. From London there are direct flights to San Francisco (SFO).

Search flight deals

Frequently asked questions about flying from London to San Francisco

How far is London to San Francisco by plane?
A flight from London to San Francisco will travel around 8609,9 km.
When did momondo last update prices for flights from London to San Francisco Airport?
Prices for flights from London to San Francisco Airport are refreshed on a daily basis.
How old do you have to be to fly from London to San Francisco Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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 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 licence 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 to San Francisco?
momondo data reveals that the most frequently booked plane model on the route from London to San Francisco is Boeing 787-9 Dreamliner, representing 54,04% of all bookings. The subsequent popular models are Airbus A380-800 at 14,80%, Boeing 777 at 8,34%, and Boeing 777-300ER at 6,80%.

Emeryville

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Berkeley

Redwood City

Why use momondo?

Why should I use momondo to find a flight deal from London to San Francisco?

It is quick and easy to find London to San Francisco flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Francisco that suits you.

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?

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?

If you are simply researching potential flights to San Francisco, momondo offers a useful price alert feature which will track prices for flights to San Francisco from London and alert you when they change.