Cheap flights from London to San Francisco from £364

LON — SFO
4 Oct — 11 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

Sun 13/1207:50 -
1 stop15h 45m
Wed 16/1208:00 -
1 stop21h 05m
Deal found 4/9£434
Sat 3/1017:00 -
1 stop13h 49m
Mon 21/1206:00 -
1 stop22h 20m
Deal found 3/9£435
Mon 28/909:25 -
1 stop14h 50m
Sun 4/1019:35 -
1 stop14h 15m
Deal found 4/9£435
Mon 21/918:45 -
1 stop29h 35m
Sat 26/914:00 -
1 stop35h 05m
Deal found 3/9£438
Wed 7/1011:15 -
2 stops32h 30m
Tue 13/1013:45 -
2 stops22h 50m
Deal found 4/9£438
Tue 22/909:50 -
1 stop14h 05m
Fri 25/917:35 -
1 stop18h 45m
Deal found 3/9£439
Tue 15/920:40 -
2 stops31h 24m
Tue 29/917:55 -
1 stop18h 05m
Deal found 4/9£440
Wed 16/1214:45 -
1 stop15h 24m
Thu 31/1219:29 -
1 stop32h 51m
Deal found 2/9£441
Mon 28/920:40 -
2 stops36h 19m
Tue 6/1014:01 -
2 stops21h 59m
Deal found 4/9£441
Thu 15/1011:30 -
2 stops20h 27m
Wed 4/1108:55 -
2 stops50h 05m
Deal found 4/9£441
Thu 24/1206:30 -
1 stop13h 15m
Thu 31/1206:00 -
1 stop17h 45m
Deal found 2/9£442
Mon 23/1108:35 -
1 stop15h 55m
Thu 3/1219:25 -
1 stop14h 25m
Deal found 3/9£442

Find flight deals from London to San Francisco

Round-trip from

£434

One-way from

£364

Popular in

December

Cheapest in

February

Average price

£494

Good round-trip deal

£486 or less

Good one-way deal

£506 or less
British Airways
  • British Airways
  • 13/12-16/12
  • 2 total stops
  • 36h 50m total
  • London to San Francisco
British Airways
  • British Airways
  • 15/11-31/12
  • 2 total stops
  • 22h 57m total
  • London to San Francisco
High demand for flights, 0% potential price rise
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Average for round-trip flights in September 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

Mon 26/10

19:30-17:30

2 stops53h 00m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£365

LondonSan Francisco

LTN London Luton - SFO San Francisco

LTNSFO

London Luton

Wed 4/11

07:00-22:57

3 stops23h 57m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£366

LondonSan Francisco

LTN London Luton - SFO San Francisco

LTNSFO

London Luton

Tue 15/12

17:45-14:45

3 stops29h 00m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£367

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Tue 2/3

11:45-14:55

Nonstop11h 10m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£369

LondonSan Francisco

LTN London Luton - SFO San Francisco

LTNSFO

London Luton

Sun 13/9

18:10-12:00

3 stops49h 50m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£370

LondonSan Francisco

LTN London Luton - SFO San Francisco

LTNSFO

London Luton

Wed 2/12

07:00-15:50

2 stops40h 50m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£370

LondonSan Francisco

LTN London Luton - SFO San Francisco

LTNSFO

London Luton

Tue 10/11

17:45-20:10

1 stop34h 25m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£371

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Thu 15/10

07:00-16:15

2 stops17h 15m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£374

LondonSan Francisco

LHR London Heathrow - SFO San Francisco

LHRSFO

London Heathrow

Sun 29/11

18:40-16:30

1 stop29h 50m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£376

LondonSan Francisco

LTN London Luton - SFO San Francisco

LTNSFO

London Luton

Sun 29/11

06:55-15:35

2 stops40h 40m

San Francisco

Wed 31/12

00:00-09:00

Nonstop0h 00m

£383

Flights are sorted by cheapest return flights first.

Deals found on 30/8

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 Thursday (44 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (26 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 £426 and £563 in December.
The cheapest return price found within the last 5 days was £434 on British Airways (13 Dec–16 Dec).

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.

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Food

6.8

Crew

8.1

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.

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Food

6.8

Crew

8.1

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.

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Food

6.8

Crew

8.1

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.

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Food

6.8

Crew

8.1

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.

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Food

6.8

Crew

8.1

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.

Entertainment

6.8

Comfort

7.3

Boarding

7.6

Overall

7.6

Food

6.8

Crew

8.1

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 35 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 14h 50m. Fly via Virgin Atlantic, SWISS, or United Airlines to get the fastest option. London and San Francisco are separated by a distance of 5374 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 £274. 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 (73%), Austrian Airlines (73%) or United Airlines (73%) 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 £347. On average you can expect to pay £1,182. The most popular route, (London Heathrow - San Francisco), can usually be booked for £355.

  • 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£274Average£664FlexibilityNo 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£549FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Brussels AirlinesCheapest£369Average£508FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Austrian AirlinesCheapest£372Average£501FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Scandinavian AirlinesCheapest£375Average£488FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
LufthansaCheapest£379Average£554FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
United AirlinesCheapest£382Average£590FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£383Average£537FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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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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