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Cheap flights from London Heathrow Airport to San Francisco from $753

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 Heathrow Airport to San Francisco departing on 29/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to San Francisco

Cheap return flights

Delta Logo
09:55 - 00:05LHR-SFO
22h 10m2 stops
Delta Logo
16:30 - 10:40SFO-LHR
10h 10mdirect
$801Delta
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Thu, 9 Oct - Mon, 2 Mar
United Airlines Logo
16:15 - 19:20LHR-SFO
11h 05mdirect
United Airlines Logo
16:05 - 10:25SFO-LHR
10h 20mdirect
$803United Airlines
Find Deal
Sat, 27 Sep - Sat, 11 Oct
Lufthansa Logo
10:35 - 13:40LHR-SFO
11h 05mdirect
Lufthansa Logo
16:05 - 10:25SFO-LHR
10h 20mdirect
$804Lufthansa
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Fri, 3 Oct - Fri, 10 Oct
British Airways Logo
19:05 - 09:24LHR-SFO
22h 19m1 stop
British Airways Logo
08:00 - 09:25SFO-LHR
17h 25m1 stop
$831British Airways
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Sun, 28 Sep - Thu, 9 Oct
Logo
11:10 - 22:59LHR-SFO
18h 49m2 stops
Logo
07:30 - 11:20SFO-LHR
19h 50m2 stops
$836
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Wed, 29 Oct - Wed, 5 Nov
Lufthansa Logo
06:30 - 12:40LHR-SFO
14h 10m1 stop
Lufthansa Logo
19:50 - 14:10SFO-LHR
10h 20mdirect
$843Lufthansa
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Wed, 15 Oct - Tue, 21 Oct
Logo
10:35 - 13:40LHR-SFO
11h 05mdirect
Logo
08:25 - 06:20SFO-LHR
13h 55m1 stop
$849
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Sat, 27 Sep - Mon, 6 Oct
Scandinavian Airlines Logo
19:50 - 14:35LHR-SFO
26h 45m2 stops
Scandinavian Airlines Logo
16:40 - 18:50SFO-LHR
18h 10m2 stops
$855Scandinavian Airlines
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Wed, 5 Nov - Mon, 10 Nov
British Airways Logo
06:15 - 20:39LHR-SFO
22h 24m2 stops
British Airways Logo
23:28 - 06:35SFO-LHR
23h 07m1 stop
$866British Airways
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Sat, 13 Dec - Tue, 16 Dec
Scandinavian Airlines Logo
18:40 - 14:35LHR-SFO
27h 55m1 stop
Scandinavian Airlines Logo
16:40 - 16:00SFO-LHR
15h 20m1 stop
$894Scandinavian Airlines
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Fri, 12 Dec - Sun, 14 Dec

British Airways flights from London Heathrow Airport to San Francisco

Our best British Airways deals on London Heathrow Airport to San Francisco flight tickets
British Airways
27 Sept
LHR08:20London Heathrow
18h 15m
1 stop
SFO18:35San Francisco
9 Oct
SFO15:50San Francisco
16h 15m
1 stop
LHR16:05London Heathrow
$812
Find similar
British Airways
20 Sept
LHR16:55London Heathrow
14h 21m
1 stop
SFO23:16San Francisco
4 Oct
SFO10:14San Francisco
13h 06m
1 stop
LHR07:20London Heathrow
$813
Find similar
British Airways
28 Sept
LHR19:05London Heathrow
22h 19m
1 stop
SFO09:24San Francisco
9 Oct
SFO08:00San Francisco
17h 25m
1 stop
LHR09:25London Heathrow
$831
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Scandinavian Airlines flights from London Heathrow Airport to San Francisco

Our best Scandinavian Airlines deals on London Heathrow Airport to San Francisco flight tickets
Scandinavian Airlines
5 Nov
LHR19:50London Heathrow
26h 45m
2 stops
SFO14:35San Francisco
10 Nov
SFO16:40San Francisco
18h 10m
2 stops
LHR18:50London Heathrow
$855
Find similar
Scandinavian Airlines
12 Dec
LHR06:40London Heathrow
15h 55m
1 stop
SFO14:35San Francisco
15 Dec
SFO16:40San Francisco
17h 00m
1 stop
LHR17:40London Heathrow
$894
Find similar
Scandinavian Airlines
25 Sept
LHR21:05London Heathrow
27h 25m
2 stops
SFO16:30San Francisco
26 Feb
SFO16:40San Francisco
15h 45m
2 stops
LHR16:25London Heathrow
$923
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momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 78,305 searches. Data last updated 15 September 2025.
Use the filters below to find and compare flights from London Heathrow Airport to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Thu 9/10

09:55-00:05

2 stops22h 10m

San Francisco

Mon 2/3

16:30-10:40

Nonstop10h 10m

$801

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 27/9

16:15-19:20

Nonstop11h 05m

San Francisco

Sat 11/10

16:05-10:25

Nonstop10h 20m

$803

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 3/10

10:35-13:40

Nonstop11h 05m

San Francisco

Fri 10/10

16:05-10:25

Nonstop10h 20m

$804

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 28/9

19:05-09:24

1 stop22h 19m

San Francisco

Thu 9/10

08:00-09:25

1 stop17h 25m

$831

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 29/10

11:10-22:59

2 stops18h 49m

San Francisco

Wed 5/11

07:30-11:20

2 stops19h 50m

$836

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 15/10

06:30-12:40

1 stop14h 10m

San Francisco

Tue 21/10

19:50-14:10

Nonstop10h 20m

$843

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 27/9

10:35-13:40

Nonstop11h 05m

San Francisco

Mon 6/10

08:25-06:20

1 stop13h 55m

$849

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 5/11

19:50-14:35

2 stops26h 45m

San Francisco

Mon 10/11

16:40-18:50

2 stops18h 10m

$855

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sat 13/12

06:15-20:39

2 stops22h 24m

San Francisco

Tue 16/12

23:28-06:35

1 stop23h 07m

$866

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 12/12

18:40-14:35

1 stop27h 55m

San Francisco

Sun 14/12

16:40-16:00

1 stop15h 20m

$894

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

How to get the cheapest flight ticket from London Heathrow Airport 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 cheapest month to fly to San Francisco?

If you aren’t able to travel during the month of February, then book flights to San Francisco from London Heathrow Airport during November instead. Flights to San Francisco in November, while not as cheap as those in February, still average around $870.

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 Heathrow Airport. The lowest ticket price found for a Wednesday departure recently was $1,008. 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 Tuesday, the most expensive travel day of the week, you can expect to see flight prices from London Heathrow Airport to San Francisco for around $2,185.

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 Heathrow Airport to San Francisco in the morning for as low as $1,003. 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 in the afternoon when prices are $2,063 on average. Flights to San Francisco from London Heathrow Airport in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest London Heathrow to San Francisco flight route?

Fly from London Heathrow to San Francisco for the best London Heathrow - 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 Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $1,005 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 Heathrow Airport for as low as $930 on momondo.

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

There are 2 cabin classes available to choose from on London Heathrow 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 Heathrow Airport to San Francisco flights?

You could potentially save up to 48% on your flight if you consider stops on a London Heathrow Airport to San Francisco flight.

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

As of September 2025, prices for London Heathrow Airport to San Francisco flights are approximately 31% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to San Francisco according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to San Francisco (LHR to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to San Francisco

Best price found

$1,816

Fastest flight time

11h 00m

Direct flights

Every day

Airports in San Francisco

1 airport
The best flight deal from London Heathrow Airport to San Francisco found on momondo in the last 72 hours is $1,816
The fastest flight from London Heathrow Airport to San Francisco takes 11h 00m
Direct flights go from London Heathrow Airport to San Francisco every day.
There is 1 airport near San Francisco: San Francisco (SFO)
Search flight deals

  • How far is London Heathrow to San Francisco by plane?

    A flight from London Heathrow to San Francisco will travel around 8596.0 km. 11h 00m is a normal flight duration for this route.

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

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

  • How old do you have to be to fly from London Heathrow Airport 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 Heathrow Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London Heathrow Airport to San Francisco?

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Walnut Creek
Carmel-by-the-Sea
Redwood City
Sausalito
Watsonville
Emeryville
San Mateo
Pacifica
Mountain View
Burlingame
Salinas
Pacific Grove
Pebble Beach
San Lorenzo

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?

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.

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