Cheap flights from London to San Francisco International

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The best prices from London to San Francisco International 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 International (SFO)

All the information you need to plan the best LON to SFO flight in 2021: compare London to San Francisco International flight prices with the expected peak season, weather and rainfall in San Francisco International.
LON - SFO
Price
£275 - £524

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

£275

From London to San Francisco International

One-way from

£179

One-way flight from London to San Francisco International

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 International?

Tuesday is generally a great day to depart. Flying on this day could help you save up to 13%.

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

Travellers have found it’s best to book a flight 61 days in advance to save up to 41% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 61 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London to San Francisco International 1-2 weeks in advance for as low as £379, or £465 for flights within the next 24 hours.

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

The best pricing can be found in the month of February. Prices to San Francisco International from London average £346. You can even find prices in February for less than £346, as users have found deals to San Francisco International from as low as £253. The month of July appears to be one of the more expensive times to travel to San Francisco International from London. Flying in the targeted month can save you up to 51%.

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

When flying from London to San Francisco International, 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 16% versus a flight in the evening.

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

The best prices found for LON to SFO flights in May, June
17 Jun - 24 Jun
£304pp
STN
London Stansted
Multiple airlines
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Multiple Airlines
   
2 STOPS
STN
London Stansted
10 Jun - 17 Jun
£317pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
18 Jun - 24 Jun
£320pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow

London to San Francisco International 2021 flight deals

Cheap flights to San Francisco International from London found for this year
17 Sep - 5 Oct
£280pp
LGW
London Gatwick
Vueling
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Vueling
 
1 STOP
LGW
London Gatwick
25 Aug - 7 Sep
£286pp
LGW
London Gatwick
Vueling
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Vueling
 
1 STOP
LGW
London Gatwick
1 Sep - 14 Sep
£293pp
LGW
London Gatwick
Vueling
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Vueling
 
1 STOP
LGW
London Gatwick

Direct flights to San Francisco International from London

Save time with London to San Francisco International direct flight deals
25 Aug - 7 Sep
£370pp
LHR
London Heathrow
Virgin Atlantic
Direct
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic
Direct
LHR
London Heathrow
8 Sep - 22 Dec
£374pp
LHR
London Heathrow
Virgin Atlantic
Direct
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic
Direct
LHR
London Heathrow
8 Sep - 22 Dec
£375pp
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 International

Late deals on return flights to San Francisco International from London, departing today and this week
25 May - 8 Jun
£414pp
LHR
London Heathrow
Lufthansa
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Lufthansa
 
1 STOP
LHR
London Heathrow
25 May - 28 Jun
£421pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Lufthansa
 
1 STOP
LHR
London Heathrow
25 May - 8 Jun
£423pp
LHR
London Heathrow
Lufthansa
   
2 STOPS
SFO
San Francisco
SFO
San Francisco
Lufthansa
 
1 STOP
LHR
London Heathrow

One-way flights to San Francisco International from London

The cheapest one-way flights from London to San Francisco International
05:00 - 14:20
Vueling
1 stop
17h 20m
LGW - SFO
Vueling
£180
Gotogate
02:30 - 11:50
Multiple Airlines
2 stops
41h 20m
SEN - SFO
Multiple Airlines
£182
Kiwi.com

Related info for your journey

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

Flight FAQs

From London to San Francisco International

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 2 inbound flights 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 International for under £284 on Cheapflights?

Yes, there are multiple flights from London to San Francisco International for under £284. The cheapest flight booked recently is on Vueling for just £280, but on average you can expect to pay £310.

Are there direct flights from London to San Francisco International for under £426 on Cheapflights?

Cheapflights has 20 direct flights from London to San Francisco International under £426. A good price for a direct flight from London to San Francisco International is less than £392.

Are there last-minute flights available from London to San Francisco International for under £426?

There are currently 20+ open flights from London to San Francisco International within the next 7 days for less than £426.

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.

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

For as low as £376, Virgin Atlantic can have you in San Francisco International from London in 13h 15m. Both multi-stop and direct flights can be found to your destination and back.

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

According to our current data, Vueling (£280), and TAP AIR PORTUGAL (£317) offers the cheapest pricing from London to San Francisco International. Vueling is priced at 19% 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 International one-way?

One-way options have recently been found by users for as low as £142 on Vueling. Another option is TAP AIR PORTUGAL, who have fights from £163.

Alternative routes for London to San Francisco International

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

Destination information for San Francisco International

Things to know before you go - useful duration and weather info for your trip from London to San Francisco International.
Today's exchange rate
£1 = $1.41

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 International

The chart below displays the airlines Cheapflights users travelling from London to San Francisco International 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 International

See what time of day planes typically take off from London towards San Francisco International.
Afternoon Midday to 6 PM 100% of flight departures
Early morning Midnight to 6 AM 0% of flight departures
Morning 6 AM to midday 0% of flight departures
Evening 6 PM to midnight 0% of flight departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from London to San Francisco International
See how many times per day planes take to the skies headed from London to San Francisco International.
Sunday
5 daily flights
Monday
0 flights
Tuesday
0 flights
Wednesday
5 daily flights
Thursday
0 flights
Friday
5 daily flights
Saturday
0 flights
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