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Cheap flights from San Francisco (SFO) to London (LON)

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The best prices from San Francisco to London are usually found in October or November, booked 60 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

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

SFO - LON
Price
$427 - $854
LON
Temperature
48.2 - 73.4 °F
LON
Rainfall
1.4 - 2.8 inches
Popular in June High demand for flights, 34% potential price rise
Cheapest in October Best time to find cheap flights, 25% potential price drop
Round-trip from $427 From San Francisco to London
One-way from $245 One-way flight from San Francisco to London
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 round-trip from San Francisco to London?

Flights from San Francisco to London are found to be more expensive on Friday. 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 London.

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 51 days in advance, which can save you up to 38% on flights from San Francisco to London compared to booking the week you need them. Waiting 51 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 $813. For sooner than that we have options available in the next 3 days from $886.

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

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, February can be a great choice for travel to London. Flights to London from San Francisco in February are about $634 on average during February, but can be found for as low as $394.

Cheap flights from San Francisco to London in July, August 2020

The best prices found for SFO to LON flights for July, August
20 Jul - 18 Aug
$655pp
SFO
San Francisco
Multiple Airlines
   
2 STOPS
STN
London Stansted
STN
London Stansted
Multiple Airlines
   
2 STOPS
SFO
San Francisco
19 Jun - 28 Jun
$657pp
SFO
San Francisco
Norwegian Air UK
Non-Stop
LGW
London Gatwick
LGW
London Gatwick
Norwegian Air UK
Non-Stop
SFO
San Francisco
27 Jul - 23 Nov
$667pp
SFO
San Francisco
Multiple Airlines
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
Non-Stop
SFO
San Francisco

San Francisco to London 2020 flight deals

Cheap flights to London from San Francisco found for this year
27 Sep - 7 Oct
$309pp
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
27 Sep - 7 Oct
$332pp
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
27 Sep - 6 Oct
$334pp
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco

Non-stop flights to London from San Francisco

Save time with San Francisco to London direct flight deals
2 Nov - 18 Nov
$596pp
SFO
San Francisco
Multiple Airlines
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Finnair
Non-Stop
SFO
San Francisco
20 Oct - 4 Nov
$597pp
SFO
San Francisco
Multiple Airlines
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Iberia
Non-Stop
SFO
San Francisco
2 Nov - 18 Nov
$598pp
SFO
San Francisco
Multiple Airlines
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Iberia
Non-Stop
SFO
San Francisco

Last minute flights from San Francisco to London

Late deals on round-trip flights to London from San Francisco, departing today and this week
28 Jun - 14 Sep
$831pp
SFO
San Francisco
Austrian Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Austrian Airlines
 
1 STOP
SFO
San Francisco
23 Jun - 23 Jul
$836pp
SFO
San Francisco
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Aer Lingus
Non-Stop
SFO
San Francisco
28 Jun - 9 Jul
$837pp
SFO
San Francisco
Multiple Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
Multiple Airlines
 
1 STOP
SFO
San Francisco

One-way flights to London from San Francisco

The cheapest one-way flights from San Francisco to London
2:30 pm - 8:40 am
Norwegian Air UK
Nonstop
10h 10m
SFO - LGW
Norwegian Air UK
$245
KAYAK
12:30 pm - 12:20 pm
Multiple Airlines
2 Stops
39h 50m
SFO - SEN
Multiple Airlines
$257
Kiwi.com
12:30 pm - 6:55 pm
TAP AIR PORTUGAL
1 Stop
22h 25m
SFO - LHR
TAP AIR PORTUGAL

Related info for your journey

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

Flight FAQs

From San Francisco to London

Are flight prices decreasing from San Francisco to London 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 San Francisco and London 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 San Francisco to London for under $400 on Cheapflights?

Yes, there are multiple flights from San Francisco to London for under $400. The cheapest flight booked recently is on TAP AIR PORTUGAL for just $309, but on average you can expect to pay $370.

Are there nonstop flights from San Francisco to London for under $600 on Cheapflights?

Cheapflights has at least 20 direct flights from San Francisco to London under $600. A good price for a nonstop flight from San Francisco to London is less than $605.

Are there last-minute flights available from San Francisco to London for under $900?

There are currently 20+ open flights from San Francisco to London within the next 7 days for less than $900.

How popular is this flight route?

The San Francisco to London flight path was viewed by 28 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

What is the cheapest airline for this route?

When searching, try setting your filters to view flights for British Airways, as currently they have the cheapest options available from San Francisco to London. On average you can find 52 flights for this flight path daily.

Is San Francisco weather warmer or cooler than London?

You can imagine temperatures to be in the 77 °F range in September. The weather in London is generally colder than San Francisco's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.

Alternative routes for San Francisco to London

Destination information for London

Things to know before you go. Useful info for your trip from San Francisco to London
Today's exchange rate
$1 = £0.82
Average temperature for July in London
73.4 °F
Avg rainfall for July in London
1.6 ″

Airports servicing San Francisco

Airports servicing London

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

Hourly flight availability from San Francisco to London

Evening 6 PM to midnight 100% of SFO to LON departures
Early morning Midnight to 6 AM 0% of SFO to LON departures
Morning 6 AM to noon 0% of SFO to LON departures
Afternoon Noon to 6 PM 0% of SFO to LON departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from San Francisco to London
Sunday
5 daily flights
Monday
5 daily flights
Tuesday
5 daily flights
Wednesday
5 daily flights
Thursday
5 daily flights
Friday
5 daily flights
Saturday
5 daily flights