Cheap flights from London to San Francisco

Return
Economy
London (LON)
San Francisco (SFO)
Depart
Return
Any month
Compare vs Cheapflights |

The best prices from London to San Francisco are usually found in February or November, booked 60 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)

All the information you need to plan the best LON to SFO flight in 2021: compare London to San Francisco flight prices with the expected peak season, weather and rainfall in San Francisco.
LON - SFO
Price
£274 - £521
SFO
Temperature
15 - 25 °C
SFO
Rainfall
0 - 120 mm

Popular in

July

High demand for flights, 34% potential price rise

Cheapest in

February

Best time to find cheap flights, 20% potential price drop

Round-trip from

£274

From London to San Francisco

One-way from

£187

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 61 days before your planned departure. Booking around this time can save you about 41% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £378 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £463.

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, February can be a great choice for travel to San Francisco. Flights to San Francisco from London in February are about £344 on average during February, but can be found for as low as £252.

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 17% versus a flight in the evening.

Cheap flights from London to San Francisco in May, June 2021

The best prices found for LON to SFO flights in May, June
26 Jun - 4 Jul
£296pp
STN
London Stansted
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
STN
London Stansted
26 Jun - 4 Jul
£301pp
LTN
London Luton
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
LTN
London Luton
10 Jun - 17 Jun
£306pp
STN
London Stansted
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
STN
London Stansted

London to San Francisco 2021 flight deals

Cheap flights to San Francisco from London found for this year
7 Oct - 21 Oct
£291pp
LGW
London Gatwick
Vueling
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Vueling
 
1 STOP
LGW
London Gatwick
26 Jun - 4 Jul
£296pp
STN
London Stansted
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
STN
London Stansted
15 Sep - 29 Sep
£299pp
STN
London Stansted
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
STN
London Stansted

Direct flights to San Francisco from London

Save time with London to San Francisco direct flight deals
13 Sep - 21 Dec
£356pp
LHR
London Heathrow
Virgin Atlantic
Direct
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic
Direct
LHR
London Heathrow
8 Jun - 15 Jun
£369pp
LHR
London Heathrow
Virgin Atlantic
Direct
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic
Direct
LHR
London Heathrow
8 Sep - 22 Dec
£373pp
LHR
London Heathrow
Virgin Atlantic
Direct
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic
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
17 May - 24 May
£415pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
KLM
 
1 STOP
LHR
London Heathrow
17 May - 23 May
£417pp
LHR
London Heathrow
Virgin Atlantic
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic
   
2 STOPS
LHR
London Heathrow
17 May - 24 May
£420pp
LHR
London Heathrow
Virgin Atlantic
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic
   
2 STOPS
LHR
London Heathrow

One-way flights to San Francisco from London

The cheapest one-way flights from London to San Francisco
14:45 - 10:35
TAP AIR PORTUGAL
1 stop
27h 50m
LHR - SFO
TAP AIR PORTUGAL
£187
mytrip.com
10:35 - 11:50
Multiple Airlines
2 stops
33h 15m
STN - SFO
Multiple Airlines
£194
Kiwi.com
17:00 - 15:25
Vueling
1 stop
30h 25m
LGW - SFO
Vueling
£195
mytrip.com

Related info for your journey

Useful info, stats and facts about <span class="emphasized">London</span> to <span class="emphasized">San Francisco</span> 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.

Which airlines flying from London to San Francisco have flexible cancellations due to COVID-19?

Some of our airline partners flying from London to San Francisco have new flexible policies in place due to COVID-19. British Airways, Virgin Atlantic, and United Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like British Airways with this kind of flexibility.

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 1 inbound flight from London per day. You should also have plenty of airline options to choose from since 21 airlines have flights to the San Francisco airport from London. It is only a 11.8 mi journey from San Francisco (SFO) to San Francisco’s city centre.

Can I find flights from London to San Francisco for under £354 on Cheapflights?

Yes, there are multiple flights from London to San Francisco for under £354. The cheapest flight booked recently is on Vueling for just £284, but on average you can expect to pay £315.

Are there direct flights from London to San Francisco for under £424 on Cheapflights?

Cheapflights has 20 direct flights from London to San Francisco under £424. A good price for a direct flight from London to San Francisco is less than £388.

Are there last-minute flights available from London to San Francisco for under £424?

There are currently 20+ open flights from London to San Francisco within the next 7 days for less than £424.

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 10h 55m. Fly via Virgin Atlantic, KLM, or Lufthansa 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, Vueling (£284), TAP AIR PORTUGAL (£307), and Virgin Atlantic (£339) offers the cheapest pricing from London to San Francisco. Vueling is priced at 17% 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?

One-way options have recently been found by users for as low as £141 on Vueling. Another option is TAP AIR PORTUGAL, who have fights from £165.

Alternative routes for London to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for San Francisco

Things to know before you go - useful duration and weather info for your trip from London to San Francisco.
Today's exchange rate
£1 = $1.42
Average temperature for May in San Francisco
21.0 °C
Avg rainfall for May in San Francisco
14.0 mm

Airports servicing London

Gatwick (LGW)
City (LCY)
Stansted (STN)
Luton (LTN)
Southend (SEN)

Airports servicing San Francisco

Top 10 airlines flying from London to San Francisco

The chart below displays the airlines Cheapflights users travelling from London to San Francisco choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Brussels Airlines
£351 £516 No cancel fee N/A
Search Brussels Airlines flights
Norwegian
£354 £526 No cancel fee 74%
Search Norwegian flights
Air France
£369 £550 No cancel fee 77%
Search Air France flights
KLM
£330 £561 No cancel fee 75%
Search KLM flights
Iberia
£346 £563 No cancel fee 77%
Search Iberia flights
TAP AIR PORTUGAL
£410 £568 No cancel fee N/A
Search TAP AIR PORTUGAL flights
Finnair
£348 £569 No cancel fee 76%
Search Finnair flights
SWISS
£377 £602 No cancel fee 79%
Search SWISS flights
Air Canada
£342 £614 No cancel fee 67%
Search Air Canada flights
Delta
£320 £697 No cancel fee N/A
Search Delta flights

Hourly flight availability from London to San Francisco

See what time of day planes typically take off from London towards San Francisco.
Afternoon Midday to 6 PM 100% of LON to US-SFO departures
Early morning Midnight to 6 AM 0% of LON to US-SFO departures
Morning 6 AM to midday 0% 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
See how many times per day planes take to the skies headed from London to San Francisco.
Sunday
4 daily flights
Monday
0 flights
Tuesday
0 flights
Wednesday
5 daily flights
Thursday
0 flights
Friday
4 daily flights
Saturday
0 flights
Home North America USA California San Francisco Cheap flights from London to San Francisco
  • Return
  • One-way
  • Multi-city
  • Economy
  • Premium Economy
  • Business
  • First
  • Multiple
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First
Economy
  • Economy
  • Premium Economy
  • Business
  • First