Cheap flights from London to San Francisco

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San Francisco (SFO)
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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
£387 - £737
SFO
Temperature
11 - 17 °C
SFO
Precipitation
0 - 112 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

£289

From London (LON) to San Francisco

One-way from

£165

One-way flight from London (LON) 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 month to fly from London to San Francisco?

February can be a great time to fly to San Francisco from London with a flight ticket averaging about £364. Cheapflights users have found deals in the month of February for as cheap as £266. The most expensive prices can be found in the month of July.

What is the cheapest day to fly return from London to San Francisco?

Saturday flights are generally found to be more expensive for flights from London to San Francisco. 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.

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

Unlike in the evening, when flights are generally more expensive, you can save up to 17% on flights from London to San Francisco by exploring options for tickets in the afternoon.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 41% on flights from London to San Francisco compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at £399. For sooner than that we have options available in the next 3 days from £489.

Cheap flights from London to San Francisco in November, December 2021

The best prices found for LON to SFO flights in November, December
7 Dec - 9 Feb
£370pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Air Canada
 
1 STOP
LHR
London Heathrow
13 Dec - 12 Jan
£384pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Air Canada
 
1 STOP
LHR
London Heathrow
7 Dec - 9 Feb
£386pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Lufthansa
Direct
LHR
London Heathrow

London to San Francisco 2022 flight deals

Cheap flights to San Francisco from London found for next year
22 Nov - 29 Nov
£369pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
7 Dec - 9 Feb
£370pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Air Canada
 
1 STOP
LHR
London Heathrow
13 Dec - 12 Jan
£384pp
LHR
London Heathrow
Multiple airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Air Canada
 
1 STOP
LHR
London Heathrow

Direct flights to San Francisco from London

Save time with London to San Francisco direct flight deals
12 Jan - 31 Jan
£354pp
LHR
London Heathrow
Virgin Atlantic
Direct
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic
Direct
LHR
London Heathrow
9 Feb - 22 Feb
£364pp
LHR
London Heathrow
Virgin Atlantic
Direct
SFO
San Francisco
SFO
San Francisco
Virgin Atlantic
Direct
LHR
London Heathrow
16 Mar - 23 Mar
£365pp
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
3 Dec - 10 Mar
£436pp
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
1 Dec - 8 Dec
£444pp
LHR
London Heathrow
Austrian Airlines
Direct
SFO
San Francisco
SFO
San Francisco
Austrian Airlines
Direct
LHR
London Heathrow
3 Dec - 10 Mar
£448pp
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow

One-way flights to San Francisco from London

The cheapest one-way flights from London to San Francisco
02:50 - 15:10
Multiple Airlines
1 stop
20h 20m
LGW - SFO
Multiple Airlines
04:50 - 15:10
Multiple Airlines
1 stop
18h 20m
LGW - SFO
Multiple Airlines
02:10 - 15:10
Multiple Airlines
1 stop
21h 00m
LTN - SFO
Multiple Airlines

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

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 18 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.

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.

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 TAP AIR PORTUGAL for just £276, but on average you can expect to pay £294.

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 £374.

Are there last-minute flights available from London to San Francisco for under £500?

There are currently 20+ open flights from London to San Francisco within the next 7 days for less than £500.

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

Flying on TAP AIR PORTUGAL is currently your cheapest option to San Francisco, with prices starting at £276. Another option worth looking into is JetBlue, starting at £326 return. TAP AIR PORTUGAL is priced at 24% lower than the current average price of a flight leaving 3 months from now.

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

Consider Air Canada (95%), Austrian Airlines (95%) or SWISS (95%) 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 £247. On average you can expect to pay £739. The most popular route, (London Heathrow - San Francisco), can usually be booked for £280.

What are the most popular airlines that fly from London to San Francisco?

Consider American Airlines, Air Canada or Air France when booking your flight. These represent the most popular airlines when flying from London to San Francisco.

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

When deciding which route to take from London to San Francisco, consider London Heathrow - San Francisco, London Gatwick - San Francisco or London City - San Francisco, as they are the most popular.

COVID Restrictions

View COVID Travel Restrictions for San Francisco, CA

Do I need a COVID test to fly to San Francisco from London?

Information is based on travel restrictions from London to San Francisco

Most visitors from London need to provide a negative COVID-19 test result and/or quarantine to enter San Francisco.

COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to San Francisco.

Quarantine requirements
Visitors from London are not required to quarantine after entering San Francisco.

Do I need a test to fly back to London from San Francisco?

Returning to London from San Francisco

COVID-19 testing requirements
Visitors from San Francisco must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to London.

Quarantine requirements
Visitors from San Francisco are not required to quarantine after entering London.

Hide COVID Travel Restrictions for San Francisco, CA

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 = $1.34
Average temperature for November in San Francisco
18.0 °C
Avg rainfall for November in San Francisco
44.0 mm

Airports servicing London

Gatwick (LGW)
Stansted (STN)
London City (LCY)
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
Delta
£239 £521 No cancel fee N/A
Search Delta flights
KLM
£246 £419 No cancel fee 75%
Search KLM flights
United Airlines
£254 £384 No cancel fee 69%
Search United Airlines flights
American Airlines
£255 £406 No cancel fee 71%
Search American Airlines flights
Air Canada
£256 £459 No cancel fee 67%
Search Air Canada flights
Iberia
£258 £421 No cancel fee 77%
Search Iberia flights
Finnair
£260 £425 No cancel fee 76%
Search Finnair flights
British Airways
£260 £422 No cancel fee 70%
Search British Airways flights
Virgin Atlantic
£262 £401 No cancel fee 72%
Search Virgin Atlantic flights
Brussels Airlines
£263 £386 No cancel fee N/A
Search Brussels Airlines 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 63% of LON to US-SFO departures
Morning 6 AM to midday 36% 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
See how many times per day planes take to the skies headed from London to San Francisco.
Sunday
24 daily flights
Monday
24 daily flights
Tuesday
17 daily flights
Wednesday
24 daily flights
Thursday
12 daily flights
Friday
6 daily flights
Saturday
24 daily flights
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