Cheap flights from San Francisco to London from £353

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LON
3 Jul — 10 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from San Francisco to London are usually found in February or January, booked 71 days in advance, depart on a Wednesday or Monday and return on a Wednesday

Cheap 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 3 June 2026.

Sun 12/719:35
SFO
-
LGW
1 stop14h 15m
SWISS
Wed 19/809:25
LGW
-
SFO
1 stop14h 50m
SWISS
Deal found 30/5£669
Tue 14/721:05
SFO
-
LHR
1 stop14h 35m
Lufthansa
Fri 21/810:50
LHR
-
SFO
1 stop16h 10m
Lufthansa
Deal found 30/5£669
Sat 8/813:10
SFO
-
LCY
2 stops34h 05m
Delta
Fri 21/809:20
LCY
-
SFO
2 stops18h 59m
Delta
Deal found 30/5£670
Wed 12/819:35
SFO
-
LGW
1 stop28h 50m
SWISS
Sun 30/809:05
LGW
-
SFO
1 stop15h 10m
SWISS
Deal found 30/5£670
Sat 11/719:30
SFO
-
LHR
2 stops36h 55m
SWISS
Thu 20/808:45
LHR
-
SFO
1 stop15h 30m
SWISS
Deal found 30/5£670
Wed 2/919:35
SFO
-
LCY
1 stop13h 50m
SWISS
Fri 4/909:15
LCY
-
SFO
1 stop15h 00m
SWISS
Deal found 30/5£670
Mon 3/819:35
SFO
-
LGW
1 stop14h 15m
SWISS
Tue 18/818:35
LGW
-
SFO
1 stop29h 40m
SWISS
Deal found 30/5£670
Fri 21/808:10
SFO
-
STN
2 stops23h 15m
Multiple Airlines
Mon 31/820:50
STN
-
SFO
2 stops28h 15m
Multiple Airlines
Deal found 31/5£670
Sun 9/823:50
SFO
-
LHR
2 stops25h 45m
Scandinavian Airlines
Wed 26/815:35
LHR
-
SFO
2 stops31h 05m
Scandinavian Airlines
Deal found 30/5£670
Fri 4/915:05
SFO
-
LGW
1 stop16h 55m
Virgin Atlantic
Tue 15/910:35
LGW
-
SFO
2 stops19h 32m
Virgin Atlantic
Deal found 31/5£671
Sun 9/808:30
SFO
-
LTN
2 stops19h 55m
Multiple Airlines
Tue 18/817:45
LTN
-
SFO
2 stops26h 55m
Multiple Airlines
Deal found 30/5£671
Thu 27/817:35
SFO
-
LHR
1 stop13h 25m
Aer Lingus
Sun 6/909:50
LHR
-
SFO
1 stop14h 05m
Aer Lingus
Deal found 30/5£671

Find 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 3 June 2026.

Round-trip from

£669

One-way from

£353

Popular in

June

Cheapest in

February

Average price

£859

Good round-trip deal

£809 or less

Good one-way deal

£375 or less
SWISS
  • SWISS
  • 12/7-20/8
  • 2 total stops
  • 29h 05m total
  • San Francisco to London
SWISS
  • SWISS
  • 7/9
  • 2 total stops
  • 19h 10m total
  • San Francisco to London
Highest demand for flights based on searches. 20% potential increase in price (£115 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).
Average for round-trip flights in June 2026
Price to beat on a round-trip flight from San Francisco to London (LON).
Price to beat on a one-way flight from San Francisco to London (LON).

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 858,174 searches. Data last updated 3 June 2026.
Use the filters below to find and compare flights from San Francisco to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 23/8

16:35-11:00

Nonstop10h 25m

London Heathrow

Mon 7/9

10:45-13:50

Nonstop11h 05m

£677

San FranciscoLondon

SFO - LTN

SFOLTN

San Francisco

Sat 12/9

16:45-22:40

2 stops21h 55m

London Luton

Sat 26/9

13:35-14:40

2 stops33h 05m

£679

San FranciscoLondon

SFO - LCY

SFOLCY

San Francisco

Thu 13/8

05:36-08:50

2 stops19h 14m

London City

Thu 20/8

20:15-11:45

1 stop23h 30m

£681

San FranciscoLondon

SFO - LCY

SFOLCY

San Francisco

Fri 21/8

05:36-08:50

2 stops19h 14m

London City

Tue 8/9

17:10-11:45

1 stop26h 35m

£681

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Fri 11/9

23:15-17:30

Nonstop10h 15m

London Heathrow

Sun 20/9

06:15-12:50

1 stop14h 35m

£682

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Wed 26/8

16:35-09:45

1 stop33h 10m

London Gatwick

Wed 9/9

16:25-14:30

1 stop30h 05m

£696

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Mon 17/8

12:55-16:40

1 stop19h 45m

London Stansted

Wed 26/8

17:45-10:50

1 stop25h 05m

£706

San FranciscoLondon

SFO - LTN

SFOLTN

San Francisco

Tue 7/7

14:40-19:55

2 stops21h 15m

London Luton

Mon 20/7

20:35-20:51

3 stops32h 16m

£708

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Sat 15/8

20:10-16:00

1 stop35h 50m

London Gatwick

Fri 28/8

10:25-18:00

1 stop15h 35m

£711

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Tue 15/9

18:45-16:40

1 stop37h 55m

London Stansted

Tue 22/9

17:35-16:40

1 stop31h 05m

£719

Flights are sorted by cheapest return flights first.

Deals found on 30/5

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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

Currently, November is the cheapest month in which you can book a flight from San Francisco to London (average of £473). Flying from San Francisco to London in June is currently the most expensive (average of £854). 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 3 June 2026.

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 in the morning, which can drop the price by up to 25% versus a flight at midday.

Weekly flight availability from San Francisco to London

Explore weekly flight availability from San Francisco to London. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 3 June 2026.

The most flights from SFO to LON are scheduled on a Monday (42 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (42 on average).

How much does it cost for a return flight from San Francisco to London?

What’s the top stopover airport for flights from San Francisco to London?

Share of one-stop return flights from San Francisco to London chosen by Cheapflights users in the past 12 months, using the same stopover each way.

Copenhagen (CPH) – chosen by Cheapflights users on 42% of one-stop itineraries from San Francisco to London on Cheapflights.

What’s the cheapest stopover airport for flights from San Francisco to London?

Average return fare for one-stop flights from San Francisco to London, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

Copenhagen (CPH) is the most affordable one-stop option, with an average return flight price of £372.

What’s the fastest stopover option from San Francisco to London?

Shortest average travel time for one-stop one-way flights from San Francisco to London, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Flights via Dublin (DUB) have the shortest average one-way travel time for one-stop routes: 13h 20m.

Which airport typically offers the quickest stopover for flights from San Francisco to London?

Average stopover duration for one-stop one-way flights from San Francisco to London, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Dallas (DFW) offer the fastest connection on this route, with an average stopover time of 1h 11m.

How often are flights from San Francisco to London delayed?

About 11% of weekly flights between San Francisco and London have experienced delays in the past year, with the average delay time being 158 minutes.

What is the most punctual flight time for San Francisco to London flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on San Francisco to London flights?

Over the past year, British Airways have had the lowest number of delays on this route, with just 8% of flights being delayed.

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

The price you pay for your flight from San Francisco to London may vary depending on when you book. For the best chance of a lower fare, look to book 37 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Use this chart to determine the cheapest time to fly return from San Francisco to London. Price data was last updated on 30 May 2026.

Travellers seeking maximum savings on their San Francisco to London flight should consider departing on Tuesday at midday when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 3 June 2026.
Read through reviews of airlines operating flights from San Francisco to London, such as KLM,Virgin Atlantic, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.4

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.2

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Crew

8.4

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.2

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Crew

8.4

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.2

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Crew

8.4

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.2

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Crew

8.4

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.2

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Crew

8.4

Food

7.3

Boarding

7.8

Overall

7.8

Entertainment

7.2

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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 11.0 mi from the city center, San Francisco is the airport most travelers will use when flying to London from San Francisco. Booking flights from San Francisco (SFO) to London should be relatively easy as there are 42 daily outbound flights to London from 5 different airlines.

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

    Airlines like British Airways, Virgin Atlantic, and TAP AIR PORTUGAL fly from San Francisco to London in about 10h 25m. The time it takes to get you to your destination can typically vary by up to 22h 45m. There are 5350 mi between San Francisco and London. This flight may include one or multiple stops.

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

    Our cheapest airline available from San Francisco to London is Virgin Atlantic. Our recent data shows that you can find tickets from as low as £368 on this airline. Additional options worth looking into are KLM and Lufthansa, starting at £369 and £371 round-trip. Virgin Atlantic is currently priced 37% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from San Francisco to London one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as £244. Users have also found prices from £256 and £265 on Virgin Atlantic and KLM, respectively.

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

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

    Before booking your flight to London from San Francisco, check out the most reliable airlines to get you to your destination on time: Air Canada (80%), Austrian Airlines (80%), United Airlines( 80%).

  • What are the cheapest flights from San Francisco to London?

    Looking at all options, your cheapest flight can be booked for £228. While the most popular route (San Francisco - London Heathrow) can be booked for £485 on average, our data indicates £1,559 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, November is the cheapest month in which you can book a flight from San Francisco to London (average of £473). Flying from San Francisco to London in June is currently the most expensive (average of £854). 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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Wembley
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Gatwick
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Ilford
Slough
Hayes
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Colchester
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Watford
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Romford
Guildford
Borehamwood
Folkestone
Southall

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Top 5 airlines flying from San Francisco to London

Discover the top 5 airlines that operate flights from San Francisco to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 3 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£368Average£541FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£369Average£706FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£371Average£657FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£386Average£510FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£388Average£581FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

When you search for this flight from San Francisco to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from San Francisco.

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?

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