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Cheap flights from London to San Francisco from £332

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 11/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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TAP AIR PORTUGAL Logo
06:00 - 14:30LHR-SFO
16h 30m1 stop
TAP AIR PORTUGAL Logo
16:35 - 12:40SFO-LHR
36h 05m1 stop
£396TAP AIR PORTUGAL
Find Deal
Wed, 11 Feb - Wed, 18 Feb
Scandinavian Airlines Logo
18:40 - 14:35LHR-SFO
27h 55m1 stop
Scandinavian Airlines Logo
16:40 - 18:30SFO-LHR
17h 50m1 stop
£404Scandinavian Airlines
Find Deal
Fri, 7 Nov - Sun, 9 Nov
Multiple Airlines Logo
17:55 - 11:50STN-SFO
25h 55m2 stops
Multiple Airlines Logo
13:55 - 20:05SFO-STN
22h 10m2 stops
£405Multiple Airlines
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Fri, 5 Dec - Sun, 7 Dec
Brussels Airlines Logo
06:50 - 21:22LHR-SFO
22h 32m2 stops
Brussels Airlines Logo
17:25 - 12:00SFO-LHR
10h 35mdirect
£429Brussels Airlines
Find Deal
Tue, 25 Nov - Wed, 10 Dec
Lufthansa Logo
11:10 - 19:35LHR-SFO
16h 25m1 stop
Lufthansa Logo
16:15 - 13:30SFO-LHR
13h 15m1 stop
£430Lufthansa
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Wed, 5 Nov - Wed, 12 Nov
Brussels Airlines Logo
06:50 - 21:22LHR-SFO
22h 32m2 stops
Brussels Airlines Logo
12:50 - 07:25SFO-LHR
10h 35mdirect
£431Brussels Airlines
Find Deal
Tue, 11 Nov - Tue, 18 Nov
Lufthansa Logo
08:30 - 15:55LHR-SFO
15h 25m1 stop
Lufthansa Logo
17:25 - 12:00SFO-LHR
10h 35mdirect
£431Lufthansa
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Wed, 5 Nov - Thu, 13 Nov
SWISS Logo
18:40 - 16:30LGW-SFO
29h 50m1 stop
SWISS Logo
19:25 - 17:50SFO-LGW
14h 25m1 stop
£434SWISS
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Mon, 26 Jan - Thu, 5 Feb
SWISS Logo
09:00 - 16:30LHR-SFO
15h 30m1 stop
SWISS Logo
19:25 - 19:15SFO-LHR
15h 50m1 stop
£435SWISS
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Mon, 17 Nov - Mon, 1 Dec
Air Canada Logo
09:00 - 21:22LHR-SFO
20h 22m2 stops
Air Canada Logo
13:20 - 11:50SFO-LHR
14h 30m1 stop
£440Air Canada
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Wed, 12 Nov - Wed, 19 Nov

Brussels Airlines flights from London to San Francisco

Our best Brussels Airlines deals on London to San Francisco flight tickets
Brussels Airlines
25 Nov
LHR06:50London Heathrow
22h 32m
2 stops
SFO21:22San Francisco
10 Dec
SFO17:25San Francisco
10h 35m
LHR12:00London Heathrow
£429
Find similar
Brussels Airlines
11 Nov
LHR06:50London Heathrow
22h 32m
2 stops
SFO21:22San Francisco
18 Nov
SFO12:50San Francisco
10h 35m
LHR07:25London Heathrow
£431
Find similar

SWISS flights from London to San Francisco

Our best SWISS deals on London to San Francisco flight tickets
SWISS
26 Jan
LGW18:40London Gatwick
29h 50m
1 stop
SFO16:30San Francisco
5 Feb
SFO19:25San Francisco
14h 25m
1 stop
LGW17:50London Gatwick
£434
Find similar
SWISS
17 Nov
LHR09:00London Heathrow
15h 30m
1 stop
SFO16:30San Francisco
1 Dec
SFO19:25San Francisco
15h 50m
1 stop
LHR19:15London Heathrow
£435
Find similar
SWISS
17 Nov
LGW18:40London Gatwick
29h 50m
1 stop
SFO16:30San Francisco
1 Dec
SFO19:25San Francisco
14h 25m
1 stop
LGW17:50London Gatwick
£455
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momondo Fare Finder

 
Customise your flight search to find flights from London 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 279,928 searches. Data last updated 15 October 2025.
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

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 11/2

06:00-14:30

1 stop16h 30m

San Francisco

Wed 18/2

16:35-12:40

1 stop36h 05m

£396

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Fri 7/11

18:40-14:35

1 stop27h 55m

San Francisco

Sun 9/11

16:40-18:30

1 stop17h 50m

£404

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Fri 5/12

17:55-11:50

2 stops25h 55m

San Francisco

Sun 7/12

13:55-20:05

2 stops22h 10m

£405

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 25/11

06:50-21:22

2 stops22h 32m

San Francisco

Wed 10/12

17:25-12:00

Nonstop10h 35m

£429

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 5/11

11:10-19:35

1 stop16h 25m

San Francisco

Wed 12/11

16:15-13:30

1 stop13h 15m

£430

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 11/11

06:50-21:22

2 stops22h 32m

San Francisco

Tue 18/11

12:50-07:25

Nonstop10h 35m

£431

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 5/11

08:30-15:55

1 stop15h 25m

San Francisco

Thu 13/11

17:25-12:00

Nonstop10h 35m

£431

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Mon 26/1

18:40-16:30

1 stop29h 50m

San Francisco

Thu 5/2

19:25-17:50

1 stop14h 25m

£434

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 17/11

09:00-16:30

1 stop15h 30m

San Francisco

Mon 1/12

19:25-19:15

1 stop15h 50m

£435

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Wed 12/11

09:00-21:22

2 stops20h 22m

San Francisco

Wed 19/11

13:20-11:50

1 stop14h 30m

£440

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 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?

The month of February is, on average, the cheapest month to fly to San Francisco from London, with most prices found around £431. If you are unable to visit San Francisco during the month of February, then departing from London during the month September is also very affordable. Most momondo users find prices during this month for around £432.

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

The cheapest day to depart on your flight to San Francisco is on a Tuesday when prices can be found for as low as £582. This is often the case because there is less demand to fly during this day of the week. Flights from London to San Francisco on a Sunday will generally be more expensive and average around £670. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to San Francisco is in the evening. Flights from London to San Francisco during this time can be as low as £483. Try not to purchase tickets at midday because they tend to be around £960. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 £507 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 £473 on momondo.

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

There are 4 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 38% 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 October 2025, prices for London to San Francisco flights are approximately 85% 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

£457

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 £457. The best return flight deal from London to San Francisco found on momondo in the last 72 hours is £464.
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)
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  • How far is London to San Francisco by plane?

    A flight from London to San Francisco will travel around 5349.7 mi. 14h 05m is a normal flight duration for this route.

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

    Prices for flights from London to San Francisco Airport are updated daily.

  • 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?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 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 license 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 to San Francisco?

  • What is the most popular airline 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
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom £240Free CancellationRating
7.9
7,975 reviews
Search Delta flights
Air CanadaPriceFrom £338Free CancellationRating
7.1
10,297 reviews
Search Air Canada flights
Aer LingusPriceFrom £352Free CancellationRating
7.2
1,336 reviews
Search Aer Lingus flights
TAP AIR PORTUGALPriceFrom £354Free CancellationRating
7.1
2,015 reviews
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesPriceFrom £359Free CancellationRating
7.4
1,532 reviews
Search Scandinavian Airlines flights
Brussels AirlinesPriceFrom £361Free CancellationRating
7.2
365 reviews
Search Brussels Airlines flights
SWISSPriceFrom £361Free CancellationRating
7.5
1,772 reviews
Search SWISS flights
United AirlinesPriceFrom £371Free CancellationRating
7.4
8,976 reviews
Search United Airlines flights
FinnairPriceFrom £373Free CancellationRating
7.6
1,332 reviews
Search Finnair flights
Virgin AtlanticPriceFrom £376Free CancellationRating
7.4
667 reviews
Search Virgin Atlantic flights

  • Delta Flights From London to San Francisco

    The lowest priced Delta flight from London to San Francisco from the last 72 hours was £319. Generally, Delta has 7 flights on this route every week with an average price of £660. Delta is rated 7.9/10 by our users.

  • KLM Flights From London to San Francisco

    KLM is also a popular choice for this route. KLM flight deals for London to San Francisco start from as low as £501 round-trip, depending on your selected dates, with average KLM deals seen on momondo around £614. KLM operates 7 flights to San Francisco from London in an average week. Users have rated it 7.7/10 across 1,402 reviews.

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Carmel-by-the-Sea
Santa Clara
Seaside
Salinas
Big Sur
Rohnert Park
Sunnyvale
San Ramon
South San Francisco
Capitola
Campbell
Palo Alto
Sausalito
San Bruno
Woodland
Santa Cruz
Redwood City
Burlingame
Modesto
Aptos

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?

momondo does allow users to show only those flights to San Francisco from London which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight 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?

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, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
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