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Cheap flights from the United Kingdom to San Francisco from £257

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to San Francisco departing on 3/11. 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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0 bags

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Find the cheapest flights from the United Kingdom to San Francisco

Recent return flight deals from the United Kingdom to San Francisco

Logo
16:55 - 23:59LHR-SFO
15h 04m1 stop
Logo
08:08 - 06:25SFO-LHR
14h 17m1 stop
£414
Find Deal
Mon, 29 Sep - Mon, 13 Oct
American Airlines Logo
15:05 - 23:59LGW-SFO
16h 54m1 stop
American Airlines Logo
06:00 - 08:10SFO-LGW
18h 10m2 stops
£414American Airlines
Find Deal
Thu, 11 Sep - Tue, 23 Sep
Virgin Atlantic Logo
20:10 - 11:45LCY-SFO
23h 35m1 stop
Virgin Atlantic Logo
13:45 - 16:40SFO-LCY
18h 55m1 stop
£414Virgin Atlantic
Find Deal
Mon, 6 Oct - Mon, 20 Oct
United Airlines Logo
06:55 - 14:30LHR-SFO
15h 35m1 stop
United Airlines Logo
23:56 - 06:55SFO-LHR
22h 59m1 stop
£415United Airlines
Find Deal
Mon, 15 Sep - Fri, 26 Sep
Virgin Atlantic Logo
09:20 - 20:05LCY-SFO
18h 45m2 stops
Virgin Atlantic Logo
13:45 - 17:20SFO-LCY
19h 35m1 stop
£416Virgin Atlantic
Find Deal
Wed, 24 Sep - Thu, 2 Oct
United Airlines Logo
08:30 - 16:00LHR-SFO
15h 30m1 stop
United Airlines Logo
11:40 - 09:35SFO-LHR
13h 55m1 stop
£417United Airlines
Find Deal
Sun, 21 Sep - Sat, 11 Oct
Lufthansa Logo
08:45 - 16:00LCY-SFO
15h 15m1 stop
Lufthansa Logo
19:25 - 18:35SFO-LCY
15h 10m1 stop
£419Lufthansa
Find Deal
Wed, 17 Sep - Sun, 21 Sep
Lufthansa Logo
08:45 - 19:55LCY-SFO
19h 10m1 stop
Lufthansa Logo
13:20 - 17:15SFO-LCY
19h 55m1 stop
£422Lufthansa
Find Deal
Wed, 8 Oct - Sat, 18 Oct
British Airways Logo
14:45 - 21:18LHR-SFO
14h 33m1 stop
British Airways Logo
22:43 - 21:40SFO-LHR
14h 57m1 stop
£428British Airways
Find Deal
Mon, 15 Sep - Sat, 20 Sep
British Airways Logo
10:45 - 13:50LHR-SFO
11h 05mdirect
British Airways Logo
20:40 - 15:10SFO-LHR
10h 30mdirect
£435British Airways
Find Deal
Tue, 14 Oct - Tue, 9 Dec

SWISS flights from United Kingdom to San Francisco

Our best SWISS deals on United Kingdom to San Francisco flight tickets
SWISS
25 Sept
LCY09:25London City
14h 45m
1 stop
SFO16:10San Francisco
9 Oct
SFO19:30San Francisco
13h 45m
1 stop
LCY17:15London City
£417
Find similar
SWISS
18 Sept
LCY09:25London City
14h 45m
1 stop
SFO16:10San Francisco
1 Oct
SFO19:30San Francisco
13h 45m
1 stop
LCY17:15London City
£417
Find similar
SWISS
4 Sept
LCY09:25London City
14h 45m
1 stop
SFO16:10San Francisco
18 Sept
SFO19:30San Francisco
15h 25m
1 stop
LCY18:55London City
£418
Find similar

TAP AIR PORTUGAL flights from United Kingdom to San Francisco

Our best TAP AIR PORTUGAL deals on United Kingdom to San Francisco flight tickets
TAP AIR PORTUGAL
25 Dec
LGW16:00London Gatwick
32h 05m
1 stop
SFO16:05San Francisco
12 Jan
SFO16:35San Francisco
15h 10m
1 stop
LGW15:45London Gatwick
£419
Find similar
TAP AIR PORTUGAL
4 Feb
LGW09:35London Gatwick
62h 30m
2 stops
SFO16:05San Francisco
18 Feb
SFO16:35San Francisco
33h 15m
1 stop
LGW09:50London Gatwick
£426
Find similar
TAP AIR PORTUGAL
12 Dec
LGW10:40London Gatwick
36h 05m
1 stop
SFO14:45San Francisco
27 Dec
SFO16:35San Francisco
33h 15m
1 stop
LGW09:50London Gatwick
£426
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom 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 29 August 2025.
Use the filters below to find and compare flights from the United Kingdom to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 29/9

16:55-23:59

1 stop15h 04m

San Francisco

Mon 13/10

08:08-06:25

1 stop14h 17m

£414

LondonSan Francisco

LGW - SFO

LGWSFO

London Gatwick

Thu 11/9

15:05-23:59

1 stop16h 54m

San Francisco

Tue 23/9

06:00-08:10

2 stops18h 10m

£414

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Mon 6/10

20:10-11:45

1 stop23h 35m

San Francisco

Mon 20/10

13:45-16:40

1 stop18h 55m

£414

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 15/9

06:55-14:30

1 stop15h 35m

San Francisco

Fri 26/9

23:56-06:55

1 stop22h 59m

£415

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Wed 24/9

09:20-20:05

2 stops18h 45m

San Francisco

Thu 2/10

13:45-17:20

1 stop19h 35m

£416

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Sun 21/9

08:30-16:00

1 stop15h 30m

San Francisco

Sat 11/10

11:40-09:35

1 stop13h 55m

£417

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Wed 17/9

08:45-16:00

1 stop15h 15m

San Francisco

Sun 21/9

19:25-18:35

1 stop15h 10m

£419

LondonSan Francisco

LCY - SFO

LCYSFO

London City

Wed 8/10

08:45-19:55

1 stop19h 10m

San Francisco

Sat 18/10

13:20-17:15

1 stop19h 55m

£422

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Mon 15/9

14:45-21:18

1 stop14h 33m

San Francisco

Sat 20/9

22:43-21:40

1 stop14h 57m

£428

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

Tue 14/10

10:45-13:50

Nonstop11h 05m

San Francisco

Tue 9/12

20:40-15:10

Nonstop10h 30m

£435

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to San Francisco from

How to get the cheapest flight ticket from United Kingdom 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 United Kingdom, with most prices found around £424. If you are unable to visit San Francisco during the month of February, then departing from United Kingdom during the month November is also very affordable. Most momondo users find prices during this month for around £436.

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 £554. This is often the case because there is less demand to fly during this day of the week. Flights from United Kingdom to San Francisco on a Sunday will generally be more expensive and average around £629. 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 United Kingdom to San Francisco during this time can be as low as £476. Try not to purchase tickets at midday because they tend to be around £932. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest United Kingdom to San Francisco flight route?

Fly from London Heathrow to San Francisco for the best United Kingdom - 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 United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around £498 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 United Kingdom for as low as £455 on momondo.

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

There are 4 cabin classes available to choose from on United Kingdom 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 United Kingdom to San Francisco flights?

You could potentially save up to 46% on your flight if you consider stops on a United Kingdom to San Francisco flight.

Cheap United Kingdom to San Francisco flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to San Francisco

Best price found

£518

Fastest flight time

11h 00m

Direct flights

Every day

Airports in San Francisco

1 airport
The best one-way flight to San Francisco from United Kingdom in the past 72 hours is £518. The best return flight deal from United Kingdom to San Francisco found on momondo in the last 72 hours is £478.
The fastest flight from United Kingdom to San Francisco takes 11h 00m
Direct flights go from United Kingdom to San Francisco every day.
There is 1 airport near San Francisco: San Francisco (SFO)
Search flight deals

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

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

  • How many operators does momondo search for flights from United Kingdom to San Francisco Airport?

  • How old do you have to be to fly from United Kingdom to San Francisco Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United Kingdom 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 license 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 United Kingdom to San Francisco?

Best airlines flying from United Kingdom to San Francisco

Compare and see reviews for airlines that fly from United Kingdom to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom £236Free CancellationRating
7.9
7,979 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom £347Free CancellationRating
7.4
1,481 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom £348Free CancellationRating
7.1
1,966 reviews
Search TAP AIR PORTUGAL flights
SWISSPriceFrom £350Free CancellationRating
7.6
1,715 reviews
Search SWISS flights
Brussels AirlinesPriceFrom £357Free CancellationRating
7.2
355 reviews
Search Brussels Airlines flights
Air CanadaPriceFrom £358Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
Virgin AtlanticPriceFrom £360Free CancellationRating
7.4
661 reviews
Search Virgin Atlantic flights
Aer LingusPriceFrom £362Free CancellationRating
7.2
1,240 reviews
Search Aer Lingus flights
British AirwaysPriceFrom £363Free CancellationRating
6.7
7,316 reviews
Search British Airways flights
United AirlinesPriceFrom £367Free CancellationRating
7.4
8,941 reviews
Search United Airlines flights

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
Vacaville
Salinas
Calistoga
Rohnert Park
Campbell
Sunnyvale
Milpitas
San Ramon
Brentwood
Capitola
South San Francisco
Sonoma
Millbrae
Woodland
San Bruno
Sausalito
Redwood City

Why use momondo?

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

Finding the right flight to San Francisco from United Kingdom is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Francisco quick and easy, saving you time and money.

Can I find flights from United Kingdom to San Francisco with flexible booking policies on momondo?

Flights from United Kingdom to San Francisco with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from United Kingdom 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 United Kingdom to San Francisco.

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

Yes momondo offers price alerts on flights to San Francisco from United Kingdom. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when 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.
Start using Trips
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