Cheap flights from San Francisco to London from $567

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LON
21 Nov — 28 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from San Francisco to London are usually found in September or October, booked 88 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

Cheap flight deals from San Francisco to London

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to London (LON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 22 October 2025.

Round-trip from

$902

One-way from

$567

Popular in

June

Cheapest in

September

Average price

$1,024
Delta
  • Delta
  • 5/11-11/11
  • Nonstop
  • 21h 10m total
  • San Francisco to London
JetBlue
  • JetBlue
  • 9/11
  • 1 total stop
  • 14h 40m total
  • San Francisco to London
Highest demand for flights based on searches. 16% potential increase in price ($353 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease ($63 potential savings vs. average return price).
Average for round-trip flights in October 2025

Find flight deals from San Francisco to London

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco to London
Explore the most affordable flight options available from San Francisco to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 October 2025.

Wed 5/1116:30SFO - LHR
Nonstop10h 10mDelta
Fri 14/1111:40LHR - SFO
Nonstop11h 00mDelta
Deal found 21/10$902
Tue 21/1011:25SFO - LHR
1 stop13h 30mDelta
Tue 28/1006:30LHR - SFO
1 stop13h 20mDelta
Deal found 21/10$904
Sun 26/1017:30SFO - LHR
Nonstop10h 10mDelta
Tue 11/1111:40LHR - SFO
Nonstop11h 00mDelta
Deal found 21/10$905
Mon 24/1108:25SFO - LHR
2 stops17h 35mDelta
Wed 24/1211:45LHR - SFO
1 stop32h 05mDelta
Deal found 21/10$907
Mon 1/1216:40SFO - LHR
1 stop17h 00mScandinavian Airlines
Wed 10/1221:05LHR - SFO
2 stops25h 30mScandinavian Airlines
Deal found 20/10$908
Tue 28/1011:58SFO - LHR
1 stop14h 02mMultiple Airlines
Wed 26/1111:40LHR - SFO
Nonstop11h 00mMultiple Airlines
Deal found 21/10$910
Fri 14/1116:40SFO - LHR
2 stops17h 50mScandinavian Airlines
Fri 21/1121:05LHR - SFO
2 stops25h 30mScandinavian Airlines
Deal found 21/10$914
Thu 6/1116:40SFO - LHR
1 stop17h 00mScandinavian Airlines
Thu 13/1106:40LHR - SFO
1 stop15h 55mScandinavian Airlines
Deal found 19/10$916
Mon 1/1220:40SFO - LHR
Nonstop10h 30mBritish Airways
Wed 10/1212:35LHR - SFO
1 stop15h 55mBritish Airways
Deal found 21/10$918
Fri 5/1216:40SFO - LHR
2 stops32h 15mScandinavian Airlines
Fri 12/1221:05LHR - SFO
2 stops25h 30mScandinavian Airlines
Deal found 21/10$919

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco to London that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 647,157 searches. Data last updated 22 October 2025.
Use the filters below to find and compare flights from San Francisco to London that are best for you.

Fly from

San Francisco

Fly to

London

Route

Depart

Return

Price

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 19/11

05:45-07:05

1 stop17h 20m

London Heathrow

Wed 26/11

11:40-14:40

Nonstop11h 00m

$910

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Fri 14/11

16:40-18:30

2 stops17h 50m

London Heathrow

Fri 21/11

21:05-14:35

2 stops25h 30m

$914

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Fri 5/12

16:40-08:55

2 stops32h 15m

London Heathrow

Fri 12/12

21:05-14:35

2 stops25h 30m

$922

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 10/2

06:00-10:55

1 stop20h 55m

London Heathrow

Wed 4/3

11:40-14:40

Nonstop11h 00m

$922

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 1/12

16:30-10:40

Nonstop10h 10m

London Heathrow

Sun 7/12

06:30-11:50

1 stop13h 20m

$944

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 8/4

07:00-16:00

2 stops25h 00m

London Heathrow

Mon 13/4

19:50-14:40

2 stops26h 50m

$958

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 8/4

19:30-14:10

Nonstop10h 40m

London Heathrow

Wed 29/4

07:25-14:35

1 stop15h 10m

$968

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Fri 28/11

16:30-10:40

Nonstop10h 10m

London Heathrow

Thu 26/2

06:30-11:50

1 stop13h 20m

$970

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Fri 7/11

11:38-08:45

1 stop13h 07m

London Heathrow

Tue 11/11

06:30-11:50

1 stop13h 20m

$976

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 4/12

00:30-07:05

1 stop22h 35m

London Heathrow

Fri 12/12

06:30-11:50

1 stop13h 20m

$976

Flights are sorted by cheapest return flights first.

Deals found on 20/10

Showing 1-10 of 22 results
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Best time to book a flight from San Francisco to London

Have a flexible travel schedule? Discover the best time to fly to London from San Francisco with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to London

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

Use this chart to determine the optimal time to book a return flight from San Francisco to London. Price data was last updated on 17 October 2025.

The best time to book flights from San Francisco to London is 88 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Francisco to London?

Currently, December is the cheapest month in which you can book a flight from San Francisco to London (average of $727). Flying from San Francisco to London in June is currently the most expensive (average of $1,235). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to LON?

Find hourly flight availability from San Francisco to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 October 2025.

When flying from San Francisco to London, the time of day you fly usually plays a role in the price. Save by searching for a flight at midday, which can drop the price by up to 23% versus a flight in the afternoon.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly from for flights from San Francisco to London?

    Located just 19.0 km from the city centre, San Francisco is the airport most travellers will use when flying to London from San Francisco. Booking flights from San Francisco (SFO) to London should be relatively easy as there are 26 daily outbound flights to London from 0 different airlines.

  • How long is the flight from San Francisco to London?

    Delta and Scandinavian Airlines can get you from San Francisco to London in just under 17h 20m. Your travel time can differ by up to 30m. Airlines will cover a distance of 8610 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Consider KLM (92%), Air France (92%) or Delta (92%) when booking your flight. These represent the most reliable airlines when flying from San Francisco to London.

  • Can I find deals for flights from San Francisco to London that include hotel bookings?

    Yes. In addition to deals on San Francisco to London flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to London.

  • Can I find deals for business class flights from San Francisco to London?

    Yes. Cheapflights offers flight deals from San Francisco to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Francisco to London?

    Currently, December is the cheapest month in which you can book a flight from San Francisco to London (average of $727). Flying from San Francisco to London in June is currently the most expensive (average of $1,235). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
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Hounslow
Horsham
Southall
Chatham
Dorking
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Alternative routes for San Francisco to London

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

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How does Cheapflights help users find flights from San Francisco to London?

Deals for San Francisco to London flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from San Francisco to London?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from San Francisco to London.

Can Cheapflights find flights from San Francisco to London with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from San Francisco to London flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from San Francisco to London become cheaper?

Yes, Cheapflights offers price alerts on San Francisco to London flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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