Cheap flights from London to San Francisco from £358

LON — SFO
29 Sep — 6 Oct1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to San Francisco are usually found in February or November, booked 41 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap flight deals from London to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from London to San Francisco

Sat 31/1010:55 -
1 stop15h 47m
Tue 10/1114:47 -
1 stop12h 48m
Deal found 28/8£467
Sun 27/909:05 -
1 stop15h 10m
Sun 4/1019:35 -
1 stop14h 15m
Deal found 30/8£467
Mon 2/1111:45 -
Nonstop11h 10m
Fri 6/1117:25 -
Nonstop10h 25m
Deal found 28/8£468
Fri 30/1017:50 -
1 stop25h 55m
Tue 10/1106:00 -
2 stops17h 15m
Deal found 29/8£468
Thu 3/914:25 -
1 stop17h 20m
Sun 6/910:58 -
1 stop13h 07m
Deal found 28/8£468
Tue 6/1011:00 -
2 stops35h 40m
Tue 20/1016:45 -
2 stops18h 30m
Deal found 28/8£468
Mon 12/1011:10 -
3 stops35h 30m
Mon 19/1016:45 -
2 stops22h 35m
Deal found 27/8£468
Sun 27/919:00 -
1 stop24h 45m
Sun 4/1013:45 -
1 stop22h 00m
Deal found 30/8£468
Thu 8/1008:45 -
2 stops17h 46m
Fri 16/1012:15 -
1 stop17h 05m
Deal found 28/8£469
Wed 4/1110:00 -
1 stop34h 55m
Wed 25/1106:17 -
2 stops42h 43m
Deal found 26/8£469
Mon 12/1008:00 -
1 stop16h 15m
Mon 19/1019:35 -
1 stop13h 55m
Deal found 28/8£469
Mon 12/1012:25 -
3 stops34h 15m
Mon 19/1016:45 -
2 stops22h 05m
Deal found 28/8£470

Find flight deals from London to San Francisco

Round-trip from

£467

One-way from

£358

Popular in

December

Cheapest in

February

Average price

£609

Good round-trip deal

£489 or less

Good one-way deal

£463 or less
Delta
  • Delta
  • 31/10-6/11
  • 2 total stops
  • 28h 42m total
  • London to San Francisco
24/9
  • 24/9
  • 2 total stops
  • 49h 32m total
  • London to San Francisco
High demand for flights, 0% potential price rise
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Average for round-trip flights in August 2026
Price to beat on a round-trip flight from London (LON) to San Francisco.
Price to beat on a one-way flight from London (LON) to San Francisco.

Cheapflights Fare Finder

 
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

Cheapest return flight

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Sat 31/10

10:55-19:42

1 stop15h 47m

San Francisco

Fri 6/11

14:40-11:35

1 stop12h 55m

£467

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Tue 22/9

16:15-19:15

Nonstop11h 00m

San Francisco

Wed 14/10

10:40-09:40

1 stop15h 00m

£470

LondonSan Francisco

LTN London Luton - SFO San Francisco

LTNSFO

London Luton

Tue 13/10

13:10-14:40

2 stops33h 30m

San Francisco

Tue 20/10

16:45-22:10

2 stops21h 25m

£471

LondonSan Francisco

LGW London Gatwick - SFO San Francisco

LGWSFO

London Gatwick

Wed 10/2

10:00-23:41

2 stops21h 41m

San Francisco

Sun 28/2

06:00-15:45

2 stops25h 45m

£478

LondonSan Francisco

LCY London City - SFO San Francisco

LCYSFO

London City

Wed 23/12

18:55-11:45

1 stop24h 50m

San Francisco

Mon 18/1

06:00-08:50

2 stops18h 50m

£482

LondonSan Francisco

LCY London City - SFO San Francisco

LCYSFO

London City

Mon 21/9

19:15-16:35

1 stop29h 20m

San Francisco

Mon 28/9

14:25-12:35

1 stop14h 10m

£482

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Wed 16/9

08:40-16:15

1 stop15h 35m

San Francisco

Wed 23/9

08:45-12:35

1 stop19h 50m

£489

LondonSan Francisco

LCY London City - SFO San Francisco

LCYSFO

London City

Sat 23/1

08:40-22:39

2 stops21h 59m

San Francisco

Sat 30/1

07:30-13:15

2 stops21h 45m

£492

LondonSan Francisco

LCY London City - SFO San Francisco

LCYSFO

London City

Wed 10/2

09:20-23:59

2 stops22h 39m

San Francisco

Sun 28/2

06:15-08:50

2 stops18h 35m

£492

LondonSan Francisco

LTN London Luton - SFO San Francisco

LTNSFO

London Luton

Mon 12/10

13:35-14:40

2 stops33h 05m

San Francisco

Mon 19/10

16:45-18:40

2 stops17h 55m

£502

Flights are sorted by cheapest return flights first.

Deals found on 25/8

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from London to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from London with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from London to San Francisco

What is the cheapest month to book a flight from London to San Francisco?

Currently, February is the cheapest month in which you can book a flight from London to San Francisco (average of £433). Flying from London to San Francisco in December is currently the most expensive (average of £631). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to SFO?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London to San Francisco as you normally would.

Weekly flight availability from London to San Francisco

The most flights from LON to SFO are scheduled on a Monday (38 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (31 on average).

How much does it cost for a return flight from London to San Francisco?

Airfare is typical for this route at the moment.
London to San Francisco flights typically cost between £425 and £563 in October.
The cheapest return price found within the last 5 days was £467 on Delta (31 Oct–6 Nov).

What’s the top stopover airport for flights from London to San Francisco?

Dublin (DUB) – chosen by Cheapflights users on 32% of one-stop itineraries from London to San Francisco on Cheapflights.

What’s the cheapest stopover airport for flights from London to San Francisco?

Vancouver (YVR) is the most affordable one-stop option, with an average return flight price of £395.

What’s the fastest stopover option from London to San Francisco?

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 13h 16m.

Which airport typically offers the quickest stopover for flights from London to San Francisco?

Flights via Chicago (ORD) offer the fastest connection on this route, with an average stopover time of 1h 26m.

How often are flights from London to San Francisco delayed?

About 13% of weekly flights between London and San Francisco have experienced delays in the past year, with the average delay time being 143 minutes.

What is the most punctual flight time for London to San Francisco flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

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

Friday tends to have the lowest number of delays on this route, whereas Wednesday has historically faced a higher average of delays compared to other days of the week.

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

Over the past year, United Airlines have had the lowest number of delays on this route, with just 12% of flights being delayed.

How far ahead should I book a flight from London to San Francisco?

To ensure you get the cheapest price possible for a flight from London to San Francisco, you should look to book at least 22 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

Reviews of airlines servicing San Francisco

Read reviews from past customers who have flown with Austrian Airlines,United Airlines, andVirgin Atlantic from London to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Food

6.8

Crew

8.1

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2026

VIE - EWR

Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Food

6.8

Crew

8.1

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2026

VIE - EWR

Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Food

6.8

Crew

8.1

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2026

VIE - EWR

Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Food

6.8

Crew

8.1

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2026

VIE - EWR

Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Food

6.8

Crew

8.1

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2026

VIE - EWR

Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.

Boarding

7.6

Comfort

7.3

Entertainment

6.8

Food

6.8

Crew

8.1

Overall

7.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Jul 2026

VIE - EWR

Staff is courteous. Food is served with a nice touch, with the chef coming out to discuss the menu. But the quality and variety of food and snacks is below competing airlines. Onboard in Vienna was a bit chaotic. I am 6 ft 1 in tall and the flat beds are a bit tight. Other than that, the overall experience was fine.

Related info for your journey

  • What airport do you fly into for flights to San Francisco from London?

    San Francisco (SFO) is the airport you will fly into if you book a flight from London to San Francisco. You should not have trouble finding flights to San Francisco from London; the airport handles an average of 36 inbound flights from London per day. You should also have plenty of airline options to choose from since 19 airlines have flights to the San Francisco airport from London. It is only a 11.0 mi journey from San Francisco (SFO) to San Francisco’s city center.

  • How long is the flight from London to San Francisco?

    There are many flights that can get you from London to San Francisco in 11h. Fly via Delta, United Airlines, or Virgin Atlantic to get the fastest option. London and San Francisco are separated by a distance of 5350 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from London to San Francisco round-trip?

    Flying on Delta is currently your cheapest option to San Francisco, with prices starting at £273. Additional return tickets that might be worth considering are offered by SWISS and TAP AIR PORTUGAL, with the lowest prices starting at £347 and £357, respectively. Delta is priced at 49% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from London to San Francisco one-way?

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at £268. Virgin Atlantic flights start at £298 while deals on British Airways start at £322 one-way.

  • What are the most popular routes from London to San Francisco?

  • What are the most reliable airlines from London to San Francisco?

    Consider Air Canada (75%), Austrian Airlines (75%) or United Airlines (75%) when booking your flight. These represent the most reliable airlines when flying from London to San Francisco.

  • What are the cheapest flights from London to San Francisco?

    The cheapest flight price from London to San Francisco is £323. On average you can expect to pay £1,268. The most popular route, (London Heathrow - San Francisco), can usually be booked for £299.

  • Can I find deals for flights from London to San Francisco that include hotel bookings?

    Yes. In addition to deals on London to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to San Francisco.

  • Can I find deals for business class flights from London to San Francisco?

    Yes. Cheapflights offers flight deals from London to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London to San Francisco?

    Currently, February is the cheapest month in which you can book a flight from London to San Francisco (average of £433). Flying from London to San Francisco in December is currently the most expensive (average of £631). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

  • What are the most eco-friendly airlines from London to San Francisco?

    If you are looking for flights to San Francisco from London that are eco-friendly, there are a couple of airlines that we can recommend. The recommended airlines are Brussels Airlines, Finnair, Jetblue and Singapore Airlines. If you choose to fly with Brussels Airlines, you will be flying with an airline that trains its pilots only to use one engine during taxiing and limited flaps while landing. This saves a lot of fuel. The fleet of aircraft for long-haul flights has also been replaced with models consuming 3.1% less fuel. Finnair is another great option for sustainable travel. They plan to cut their carbon emissions by 2025 by 50% from 2019’s level. This airline is also working on sustainable catering. Jetblue uses Airbus A320neos which improve fuel economy by 15%. This airline also uses Sharklets, which are wing tip devices that improve aerodynamics and reduce carbon emissions by 4%. Singapore Airlines is another great airline to fly with for eco-friendly travel. This airline is working on sustainable fuel and regularly replaces its planes with newer models that consume less fuel.

  • How to fly more sustainably from London to San Francisco?

    There are many great ways to travel more sustainably to San Francisco from London. One of the best ways you can do this is by taking a direct flight. Taking a direct flight uses less fuel than taking a flight route with more than one stopover. If you can, you should also fly in economy class. The economy class takes up less room in the aircraft and therefore can hold more passengers. Another great eco-friendly way to travel is by packing light. The lighter you pack, the less fuel the aircraft will use. Flying with an airline that has sustainable travel methods in place is super beneficial for the planet. If you have the option, try to fly with Brussels Airlines, Finnair, Jetblue or Singapore Airlines.

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
San Bruno
Roseville
Newark
Bodega Bay
Sunnyvale
South San Francisco

Browse thousands of different options on Cheapflights for your next trip

Fly from London to San Francisco on these airlines

Top 10 airlines flying from London to San Francisco

AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£273Average£663FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
SWISSCheapest£347Average£506FlexibilityNo cancel feeOn-time79%
Search SWISS flights
TAP AIR PORTUGALCheapest£357Average£476FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Virgin AtlanticCheapest£364Average£548FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Brussels AirlinesCheapest£369Average£508FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Austrian AirlinesCheapest£371Average£501FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Scandinavian AirlinesCheapest£375Average£488FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapest£379Average£553FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£382Average£590FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£382Average£536FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to San Francisco?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to San Francisco. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from London to San Francisco?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from London to San Francisco for you. Better yet — we are completely free to use.

Can Cheapflights find flights from London to San Francisco with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from London to San Francisco flexibly with Cheapflights today.

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