Cheap flights from London to San Francisco

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The best prices from London to San Francisco are usually found in November or February, booked 59 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

How to find the cheapest flight from
London (LON) to San Francisco (SFO)

LON - SFO
Price
£301 - £609
SFO
Temperature
15 - 25 °C
SFO
Rainfall
0 - 120 mm
Popular in July High demand for flights, 37% potential price rise
Cheapest in November Best time to find cheap flights, 22% potential price drop
Round-trip from $301 From London to San Francisco
One-way from $169 One-way flight from London to San Francisco
Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly return from London to San Francisco?

Flights from London to San Francisco are generally found to be more expensive on Saturday. This shouldn't discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to San Francisco.

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

To save on the cost of your flight from London to San Francisco, book at least 57 days before your planned departure. Booking around this time can save you about 29% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £334 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £386.

What is the cheapest month to fly from London to San Francisco?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, November can be a great choice for travel to San Francisco. Flights to San Francisco from London in November are about £383 on average during November, but can be found for as low as £272.

When is the cheapest time to fly from London to San Francisco (LON - SFO)?

When flying from London to San Francisco, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 4% versus a flight in the evening.

Cheap flights from London to San Francisco in September, October 2020

The best prices found for LON to SFO flights in September, October
28 Oct - 16 Nov
£326pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
30 Oct - 21 Nov
£333pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
30 Oct - 7 Nov
£345pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow

London to San Francisco 2020 flight deals

Cheap flights to San Francisco from London found for this year
2 Dec - 28 Jan
£298pp
LGW
London Gatwick
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
20 Nov - 11 Jan
£317pp
LHR
London Heathrow
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
20 Nov - 11 Jan
£319pp
LGW
London Gatwick
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick

Direct flights to San Francisco from London

Save time with London to San Francisco direct flight deals
10 Nov - 27 Apr
£370pp
LHR
London Heathrow
KLM
Direct
SFO
San Francisco
SFO
San Francisco
KLM
Direct
LHR
London Heathrow
19 Jan - 27 Jan
£377pp
LHR
London Heathrow
KLM
Direct
SFO
San Francisco
SFO
San Francisco
KLM
Direct
LHR
London Heathrow
17 Nov - 14 Jan
£378pp
LHR
London Heathrow
KLM
Direct
SFO
San Francisco
SFO
San Francisco
KLM
Direct
LHR
London Heathrow

Last-minute flights from London to San Francisco

Late deals on return flights to San Francisco from London, departing today and this week
30 Sep - 28 Oct
£397pp
STN
London Stansted
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
STN
London Stansted
2 Oct - 18 Feb
£403pp
LGW
London Gatwick
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
1 Oct - 31 Oct
£409pp
STN
London Stansted
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
STN
London Stansted

One-way flights to San Francisco from London

The cheapest one-way flights from London to San Francisco
08:45 - 12:00
Multiple Airlines
2 stops
34h 15m
STN - SFO
Multiple Airlines
£132
Kiwi.com
16:05 - 12:00
Multiple Airlines
2 stops
26h 55m
STN - SFO
Multiple Airlines
£134
Kiwi.com
15:35 - 12:00
Multiple Airlines
3 stops
51h 25m
LTN - SFO
Multiple Airlines
£137
Kiwi.com

Related info for your journey

Useful info, stats and facts about London to San Francisco flights.

Flight FAQs

From London to San Francisco

Are flight prices decreasing from London to San Francisco due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both London and San Francisco for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

Can I find flights from London to San Francisco for under £300 on Cheapflights?

Yes, there are multiple flights from London to San Francisco for under £300. The cheapest flight booked recently is on Multiple Airlines for just £298, but on average you can expect to pay £338.

Are there direct flights from London to San Francisco for under £400 on Cheapflights?

Cheapflights has 20 direct flights from London to San Francisco under £400. A good price for a direct flight from London to San Francisco is less than £405.

Are there last-minute flights available from London to San Francisco for under £400?

There are currently 20+ open flights from London to San Francisco within the next 7 days for less than £400.

Is London weather warmer or cooler than San Francisco?

Expect the weather to be around 25 °C on average in September. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in San Francisco is generally hotter than in London.

Cheap Flights from London to San Francisco

When you book a cheap flight from London to San Francisco, you’ll be among the 11 million people who travel to this Californian city every year. And loads of them are repeat customers, coming back time after time. Some want to check out the postcard images – Golden Gate Bridge, cable cars, Alcatraz and Fisherman’s Wharf. Other travellers come to delve into colourful neighbourhoods like Chinatown, Little Italy and Pacific Heights. This heady mix of must-sees helps to make San Francisco the fifth most popular city in the USA.

How long is the flight from London to San Francisco?

Direct London to San Francisco flights are around 11 hours long. Occasionally a flight with a stopover is cheaper, adding on anything from an hour to 20 hours to your travel time.

Which airlines operate flights from London to San Francisco?

Most airlines fly from London to San Francisco, including Air Canada, British Airways, Delta Air Lines, United Airlines and Virgin Atlantic.

How frequent are flights between London and San Francisco?

San Francisco flights usually depart from London daily.

Which airports serve London and San Francisco?

You can fly from London to San Francisco from Gatwick, Heathrow or London City Airport. San Francisco has one international airport – San Francisco International.

Which direct flight route between London and San Francisco is cheapest?

The cheapest direct flights from London to San Francisco take off from Heathrow and Gatwick. Mountaineering cable cars, pacy neighbourhoods, Victorian architecture, creative cuisine, and city centre sealions – you’ll find it all in San Francisco. And thanks to the city’s waterside spot, you’re never far away from a vista of the Pacific Ocean. Golden Gate Bridge launches itself across the city’s bay, where Alcatraz prison and the houseboats of Sausalito reside. It’s worth timing your London to San Francisco flights just right. The Californian city is famous for its winter fog, plus it gets doused in even more rain than London between November and March. That said, San Francisco also serves up lots more sunshine, especially in the toasty summer and autumn months. Looking for flights from London to San Francisco? Try out our search engine. Smart filters let you choose which airlines, times, airports and stops (if any) you’d prefer.

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

There are many flights that can get you from London to San Francisco in 11h 10m. Fly via Lufthansa, KLM, or SWISS to get the fastest option. This flight may include one or multiple stops.

What are the cheapest airlines to flying from London to San Francisco return?

According to our current data, TAP AIR PORTUGAL (£262), and KLM (£283) offers the cheapest pricing from London to San Francisco. TAP AIR PORTUGAL is priced at 31% lower than the current average price of a flight leaving 3 months from now.

Alternative routes for London to San Francisco

Destination information for San Francisco

Things to know before you go. Useful info for your trip from London to San Francisco
Today's exchange rate
£1 = $1.29
Flight duration
10h 52m
Average temperature for September in San Francisco
25.0 °C
Avg rainfall for September in San Francisco
3.0 mm

Airports servicing London

Heathrow (LHR)
Luton (LTN)
Stansted (STN)
City (LCY)
Southend (SEN)

Airports servicing San Francisco

Hourly flight availability from London to San Francisco

Afternoon Midday to 6 PM 58% of LON to US-SFO departures
Morning 6 AM to midday 41% of LON to US-SFO departures
Early morning Midnight to 6 AM 1% of LON to US-SFO departures
Evening 6 PM to midnight 0% of LON to US-SFO departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from London to San Francisco
Sunday
12 daily flights
Monday
12 daily flights
Tuesday
12 daily flights
Wednesday
12 daily flights
Thursday
12 daily flights
Friday
12 daily flights
Saturday
12 daily flights
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