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Cheap flights from London to San Francisco from £205

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 27/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from London to San Francisco

Cheap return flights

 Logo
09:50 - 18:07LGW-SFO
16h 17m1 stop
 Logo
14:02 - 09:30SFO-LGW
35h 28m1 stop
Mon, 22 Sep - Fri, 26 Sep
 Logo
10:55 - 10:40LGW-SFO
31h 45m1 stop
 Logo
06:00 - 09:30SFO-LGW
19h 30m1 stop
Fri, 29 Aug - Sat, 27 Sep
Scandinavian Airlines Logo
06:40 - 16:30LHR-SFO
17h 50m1 stop
Scandinavian Airlines Logo
20:50 - 17:40SFO-LHR
13h 50m1 stop
£344Scandinavian Airlines
Find Deal
Thu, 16 Oct - Sat, 25 Oct
Scandinavian Airlines Logo
07:05 - 16:30LHR-SFO
41h 25m2 stops
Scandinavian Airlines Logo
21:30 - 21:40SFO-LHR
17h 10m1 stop
£345Scandinavian Airlines
Find Deal
Thu, 16 Oct - Sun, 26 Oct
Finnair Logo
10:25 - 23:07LGW-SFO
20h 42m2 stops
Finnair Logo
10:22 - 08:10SFO-LGW
13h 48m1 stop
£396Finnair
Find Deal
Thu, 28 Aug - Sat, 27 Sep
Lufthansa Logo
08:45 - 19:55LCY-SFO
19h 10m1 stop
Lufthansa Logo
14:40 - 18:35SFO-LCY
19h 55m1 stop
£436Lufthansa
Find Deal
Wed, 10 Sep - Wed, 17 Sep
Lufthansa Logo
08:45 - 19:55LCY-SFO
19h 10m1 stop
Lufthansa Logo
14:40 - 18:35SFO-LCY
19h 55m1 stop
£440Lufthansa
Find Deal
Wed, 24 Sep - Thu, 2 Oct
Virgin Atlantic Logo
08:40 - 19:57LCY-SFO
19h 17m2 stops
Virgin Atlantic Logo
13:45 - 17:20SFO-LCY
19h 35m1 stop
£445Virgin Atlantic
Find Deal
Wed, 3 Sep - Tue, 23 Sep
Virgin Atlantic Logo
08:40 - 19:57LCY-SFO
19h 17m2 stops
Virgin Atlantic Logo
13:45 - 18:30SFO-LCY
20h 45m1 stop
£448Virgin Atlantic
Find Deal
Wed, 3 Sep - Tue, 23 Sep
KLM Logo
20:45 - 11:45LCY-SFO
23h 00m1 stop
KLM Logo
13:45 - 11:20SFO-LCY
13h 35m1 stop
£451KLM
Find Deal
Sun, 17 Aug - Sun, 24 Aug

American Airlines flights from London to San Francisco

Our best American Airlines deals on London to San Francisco flight tickets
American Airlines
19 Sept
LGW15:05London Gatwick
16h 54m
1 stop
SFO23:59San Francisco
10 Oct
SFO10:12San Francisco
13h 58m
1 stop
LGW08:10London Gatwick
American Airlines
19 Sept
LGW15:05London Gatwick
16h 54m
1 stop
SFO23:59San Francisco
10 Oct
SFO10:12San Francisco
13h 58m
1 stop
LGW08:10London Gatwick

Scandinavian Airlines flights from London to San Francisco

Our best Scandinavian Airlines deals on London to San Francisco flight tickets
Scandinavian Airlines
16 Oct
LHR06:40London Heathrow
17h 50m
1 stop
SFO16:30San Francisco
25 Oct
SFO20:50San Francisco
13h 50m
1 stop
LHR17:40London Heathrow
Scandinavian Airlines
16 Oct
LHR07:05London Heathrow
41h 25m
2 stops
SFO16:30San Francisco
26 Oct
SFO21:30San Francisco
17h 10m
1 stop
LHR21:40London Heathrow
Scandinavian Airlines
16 Oct
LHR07:05London Heathrow
41h 25m
2 stops
SFO16:30San Francisco
26 Oct
SFO21:30San Francisco
41h 05m
2 stops
LHR21:35London Heathrow

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 typical price of a round-trip flight between London and San Francisco?

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 £423. If you are unable to visit San Francisco during the month of February, then departing from London during the month November is also very affordable. Most momondo users find prices during this month for around £429.

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 £540. 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 £598. 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 £471. Try not to purchase tickets at midday because they tend to be around £916. 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 £501 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 £456 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.

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

As of July 2025, prices for London to San Francisco flights are approximately 25% 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

£205

Fastest flight time

13h 45m

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 £205. The best return flight deal from London to San Francisco found on momondo in the last 72 hours is £328.
The fastest flight from London to San Francisco takes 13h 45m
Direct flights go from London to San Francisco every day.
There is 1 airport near San Francisco: San Francisco (SFO)

  • How far is London to San Francisco by plane?

    A flight from London to San Francisco will travel around 5349.7 mi. 14h 00m 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 £234Free CancellationRating
8.0
7,970 reviews
Search Delta flights
TAP AIR PORTUGALPriceFrom £341Free CancellationRating
7.1
1,912 reviews
Search TAP AIR PORTUGAL flights
SWISSPriceFrom £346Free CancellationRating
7.5
1,654 reviews
Search SWISS flights
Scandinavian AirlinesPriceFrom £346Free CancellationRating
7.3
1,416 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom £352Free CancellationRating
7.4
8,845 reviews
Search United Airlines flights
Virgin AtlanticPriceFrom £355Free CancellationRating
7.4
654 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £359Free CancellationRating
6.6
7,093 reviews
Search British Airways flights
Brussels AirlinesPriceFrom £359Free CancellationRating
7.3
352 reviews
Search Brussels Airlines flights
KLMPriceFrom £362Free CancellationRating
7.8
1,363 reviews
Search KLM flights
FinnairPriceFrom £364Free CancellationRating
7.6
1,304 reviews
Search Finnair 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 14 flights on this route every week with an average price of £653. Delta is rated 8.0/10 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 £494 round-trip, depending on your selected dates, with average KLM deals seen on momondo around £616. KLM operates 14 flights to San Francisco from London in an average week. Users have rated it 7.8/10 across 1,363 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
Seaside
Santa Clara
Newark
Vacaville
Salinas
Vallejo
Calistoga
Rohnert Park
Campbell
Santa Cruz
Bodega Bay
Watsonville
Milpitas
San Ramon
South San Francisco
Capitola
Brentwood
San Bruno
Sausalito

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.


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1 adult
Wed 9/7
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