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 February or January, booked 60 days in advance, depart on a Tuesday or Monday and return on a Thursday

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

All the information you need to plan the best SFO to LON flight in 2022: compare San Francisco to London flight prices with the expected peak season, weather and rainfall in London.
SFO - LON
Price
$411 - $702
LON
Temperature
39.2 - 62.6 °F
LON
Precipitation
1.6 - 2.8 inches

Popular in

December

High demand for flights, 27% potential price rise

Cheapest in

February

Best time to find cheap flights, 19% potential price drop

Round-trip from

$411

From San Francisco to London (LON)

One-way from

$225

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

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
How far in advance should I book a flight from San Francisco to London?

Find a great deal and save up to 79% by booking at least 61 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from San Francisco to London within the next two weeks, with the cheapest ticket starting at $701.

What is the cheapest day to fly round-trip from San Francisco to London?

Leaving on a Monday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 16% on the overall cost on flights from San Francisco to London.

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

February is one of the best times of the year to fly to London from San Francisco. Prices for February average $510 per person but you can even find prices for as low as $369. The most expensive prices can be found in the month of December. Opting for a February flight can save you 37% on your journey compared to booking in February

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

One of the essential ways to save on airfare from San Francisco to London is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 8% on airfare.

Cheap flights from San Francisco to London in January, February 2022

The best prices found for SFO to LON flights for January, February
17 Jan - 26 Jan
$351pp
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LGW
London Gatwick
LGW
London Gatwick
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
17 Jan - 24 Jan
$354pp
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
15 Jan - 22 Jan
$357pp
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco

San Francisco to London 2022 flight deals

Cheap flights to London from San Francisco found for this year
20 May - 23 May
$344pp
SFO
San Francisco
SAS
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
SAS
 
1 STOP
SFO
San Francisco
4 Mar - 6 Mar
$345pp
SFO
San Francisco
SAS
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
SAS
 
1 STOP
SFO
San Francisco
4 Mar - 6 Mar
$347pp
SFO
San Francisco
SAS
   
2 STOPS
LHR
London Heathrow
LHR
London Heathrow
SAS
 
1 STOP
SFO
San Francisco

Non-stop flights to London from San Francisco

Save time with San Francisco to London direct flight deals
3 Feb - 10 Feb
$447pp
SFO
San Francisco
Iberia
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Iberia
Non-Stop
SFO
San Francisco
7 Mar - 21 Mar
$451pp
SFO
San Francisco
Iberia
Non-Stop
LHR
London Heathrow
LHR
London Heathrow
Iberia
Non-Stop
SFO
San Francisco
14 Mar - 21 Mar
$465pp
SFO
San Francisco
Iberia
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
22 Jan - 12 Feb
$371pp
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
20 Jan - 3 Feb
$373pp
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco
20 Jan - 5 Feb
$374pp
SFO
San Francisco
TAP AIR PORTUGAL
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
TAP AIR PORTUGAL
 
1 STOP
SFO
San Francisco

One-way flights to London from San Francisco

The cheapest one-way flights from San Francisco to London
2:45 pm - 4:40 pm
Multiple Airlines
1 Stop
17h 55m
SFO - LTN
Multiple Airlines
$225
Combigo
2:45 pm - 2:40 am
Multiple Airlines
2 Stops
27h 55m
SFO - STN
Multiple Airlines
$244
Kiwi.com
2:45 pm - 2:40 am
Multiple Airlines
2 Stops
27h 55m
SFO - STN
Multiple Airlines
$251
Kiwi.com

Related info for your journey

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

Flight FAQs

From San Francisco to London

What airport do you fly from for flights from San Francisco to London?

Most people fly from San Francisco (SFO) if they book a flight from San Francisco to London. On average, San Francisco has 22 outbound flights to London per day from 23 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

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

Some of the carriers operating flights from San Francisco to London that may be offering flexible cancellation policies are United Airlines, Virgin Atlantic, and British Airways. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

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 SAS for just $344, but on average you can expect to pay $362.

Are there nonstop flights from San Francisco to London for under $500 on Cheapflights?

Cheapflights has at least 20 direct flights from San Francisco to London under $500. A good price for a nonstop flight from San Francisco to London is less than $486.

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

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

What are the cheapest airlines flying from San Francisco to London round-trip?

Currently priced at $344, SAS will fly you from San Francisco to London and back. In addition to SAS, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on TAP AIR PORTUGAL for as low as $351. You may be able to fly from San Francisco to London for 32% less than the average price by searching for these airlines.

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

The most popular route from San Francisco to London is San Francisco - London Heathrow. You may also consider San Francisco - London Gatwick or San Francisco - London City.

What are the cheapest flights from San Francisco to London?

On average you can expect to pay $1,732 for a flight from San Francisco to London. The cheapest flight overall is $195 while the most popular route, (San Francisco - London Heathrow) is currently priced at $345.

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Francisco to London on time: Air Canada (90%), Austrian Airlines (90%), United Airlines (90%).

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

Before booking your flight from San Francisco to London check out the most popular airlines for this route: Major Airline, American Airlines or Air Canada.

COVID Restrictions

View COVID Travel Restrictions for London, England

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

Information is based on travel restrictions from San Francisco to London

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

COVID-19 testing requirements
Visitors from San Francisco must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 2 days hours before departing to London.

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

Documents
Mandatory passenger locator form - Submit the form any time in the 48 hours before arriving in the UK. Show the form when checking in your plane, train or ferry to the UK.

Managed quarantine package for Scotland - All travelers arriving directly to Scotland are required to book their Managed Quarantine Package prior to travel.

COVID-19 testing package - All travelers must book and pay for a COVID-19 Testing Package prior to travel to England and Scotland.


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

Returning to San Francisco from London

COVID-19 testing requirements
Visitors from London must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to San Francisco.

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

Hide COVID Travel Restrictions for London, England

Alternative routes for San Francisco to London

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

Destination information for London

Things to know before you go - useful duration and weather info for your trip from San Francisco to London.
Today's exchange rate
$1 = £0.74
Average temperature for January in London
48.2 °F
Avg rainfall for January in London
2.0 ″

Airports servicing San Francisco

Airports servicing London

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

Top 10 airlines flying from San Francisco to London

The chart below displays the airlines Cheapflights users traveling from San Francisco to London 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
TAP AIR PORTUGAL
$223 $447 No cancel fee N/A
Brussels Airlines
$327 $596 No cancel fee N/A
Finnair
$347 $601 No cancel fee 76%
Icelandair
$353 $936 No cancel fee 76%
Lufthansa
$356 $609 No cancel fee 76%
American Airlines
$363 $680 No cancel fee 71%
Norwegian Air UK
$364 $694 No cancel fee N/A
Norwegian
$364 $759 No cancel fee 74%
Air Canada
$374 $680 No cancel fee 67%
KLM
$375 $628 No cancel fee 75%

Hourly flight availability from San Francisco to London

See what time of day planes typically take off from San Francisco towards London.
Afternoon Noon to 6 PM 80% of SFO to LON departures
Evening 6 PM to midnight 19% of SFO to LON departures
Early morning Midnight to 6 AM 1% of SFO to LON departures
Morning 6 AM to noon 0% of SFO to LON departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from San Francisco to London
See how many times per day planes take to the skies headed from San Francisco to London.
Sunday
20 daily flights
Monday
24 daily flights
Tuesday
24 daily flights
Wednesday
24 daily flights
Thursday
19 daily flights
Friday
24 daily flights
Saturday
24 daily flights
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