London

$378+ Cheap flights from San Francisco (SFO) to London (LON)

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 4/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LON
Mar 18 — Mar 251
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Find cheap flights from San Francisco to London with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
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The best prices from San Francisco to London are usually found in October or September, booked 38 days in advance, depart on a Wednesday or Tuesday 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 March 13, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$592
(Cheapflightsfares)

One-way from

$378
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$690

Good round-trip deal

$707 or less

Good one-way deal

$451 or less
Provider with most accurate pricing for San Francisco-London (LON) flight deals.
Provider most trusted by Cheapflights users for San Francisco-London (LON) flights.
From San Francisco to London (LON)
One-way flight from San Francisco to London (LON)
Highest demand for flights based on searches. 20% potential increase in price ($196 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
Average for round-trip flights in March 2025
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).

Find flight deals from San Francisco to London

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 March 13, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1510:19 amSFO - LHR
1 stop14h 41mIberia
Tue 5/2010:45 amLHR - SFO
Nonstop11h 05mIberia
Deal found 3/12$592
This Scandinavian Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/87:40 pmSFO - LHR
2 stops17h 55mScandinavian Airlines
Tue 4/299:05 pmLHR - SFO
2 stops27h 25mScandinavian Airlines
Deal found 3/13$594
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/710:28 pmSFO - LGW
2 stops23h 52mMultiple Airlines
Wed 5/710:55 amLGW - SFO
1 stop17h 32mMultiple Airlines
Deal found 3/12$596
This Flightnetwork deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/175:40 pmSFO - LHR
1 stop22h 00mTAP AIR PORTUGAL
Wed 4/307:50 pmLHR - SFO
1 stop26h 40mTAP AIR PORTUGAL
Deal found 3/11$600
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/218:10 pmSFO - LGW
1 stop28h 20mVueling
Sat 9/278:10 amLGW - SFO
1 stop18h 00mVueling
Deal found 3/12$601
This Cheapflightsfares deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/224:20 pmSFO - LGW
1 stop15h 15mTAP AIR PORTUGAL
Tue 9/309:15 pmLGW - SFO
2 stops25h 20mTAP AIR PORTUGAL
Deal found 3/12$602
This Gotogate deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/278:20 amSFO - LHR
1 stop17h 40mMultiple Airlines
Mon 5/126:40 pmLHR - SFO
1 stop29h 30mMultiple Airlines
Deal found 3/12$603
This United Airlines deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/237:40 pmSFO - LHR
Nonstop10h 30mUnited Airlines
Tue 4/291:45 pmLHR - SFO
1 stop34h 25mUnited Airlines
Deal found 3/13$620
This oojo deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/307:21 amSFO - LGW
1 stop16h 49mBritish Airways
Mon 5/53:05 pmLGW - SFO
1 stop17h 01mBritish Airways
Deal found 3/12$621
This Mytrip deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/18:20 amSFO - STN
2 stops28h 15mMultiple Airlines
Tue 4/810:05 pmSTN - SFO
2 stops26h 05mMultiple Airlines
Deal found 3/13$622
This Gotogate deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3111:55 amSFO - LHR
1 stop13h 40mAir Canada
Wed 4/162:10 pmLHR - SFO
1 stop14h 41mAir Canada
Deal found 3/13$625
This Kiwi.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/87:30 pmSFO - LHR
1 stop14h 20mSWISS
Tue 4/298:05 pmLHR - SFO
1 stop28h 05mSWISS
Deal found 3/12$629

Find flights from San Francisco to London within your budget

Customize 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 2,558,603 searches. Data last updated March 13, 2025.

Fly from

San Francisco

Fly to

London

Route

Depart

Return

Price

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 4/15

1:07 pm-12:15 pm

1 stop15h 08m

London Heathrow

Tue 5/13

10:45 am-1:50 pm

Nonstop11h 05m

$592

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 4/8

7:40 pm-9:35 pm

2 stops17h 55m

London Heathrow

Tue 4/29

9:05 pm-4:30 pm

2 stops27h 25m

$594

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Mon 4/7

10:28 pm-6:20 am

2 stops23h 52m

London Gatwick

Wed 4/30

10:55 am-8:37 pm

1 stop17h 42m

$596

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 4/2

7:00 am-10:00 am

2 stops19h 00m

London Heathrow

Wed 4/9

6:00 am-4:10 pm

1 stop18h 10m

$601

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Tue 4/8

4:20 pm-3:35 pm

1 stop15h 15m

London Gatwick

Wed 4/30

4:25 pm-2:30 pm

1 stop30h 05m

$605

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 4/23

7:40 pm-2:10 pm

Nonstop10h 30m

London Heathrow

Tue 4/29

1:45 pm-4:10 pm

1 stop34h 25m

$620

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Wed 4/30

7:21 am-8:10 am

1 stop16h 49m

London Gatwick

Mon 5/5

3:05 pm-12:06 am

1 stop17h 01m

$621

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 3/24

5:40 pm-9:35 pm

1 stop20h 55m

London Heathrow

Wed 4/2

7:50 pm-2:30 pm

1 stop26h 40m

$622

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Tue 4/1

8:20 am-8:35 pm

2 stops28h 15m

London Stansted

Tue 4/8

10:05 pm-4:10 pm

2 stops26h 05m

$622

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 3/31

11:55 am-9:35 am

1 stop13h 40m

London Heathrow

Wed 4/16

2:10 pm-8:51 pm

1 stop14h 41m

$625

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 60 results
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Compare providers for flights from San Francisco to London

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to London in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
FlightnetworkPrice Accuracy2 starsTrust Score*3 stars
JetabroadPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-London flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-London flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-London flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-London flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-London flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

The best insider tips for San Francisco to London flights

Find out what our experts recommend to make the most of your San Francisco to London trip
Airlines
United Airlines

United's Polaris Class offers lie-flat seats, Saks bedding, and upscale amenities for long-haul flights.


United's Premium Plus offers extra legroom, upgraded meals, and priority check-in on international routes.

British Airways

BA's Club Suite offers privacy with solo pods and a door, ideal for long-haul comfort.


BA's World Traveller Plus offers extra width, legroom, and upgraded service in a dedicated cabin.

Virgin Atlantic

Virgin's Economy Delight offers extra legroom, priority boarding, and a checked bag included.


Virgin's Upper Class includes lie-flat beds and a four-course meal, enhancing long-haul comfort.

Lufthansa

Lufthansa's Allegris Economy offers enhanced comfort with slim seats and adjustable headrests.


Lufthansa's Premium Economy offers hard-shell seats with generous recline, ideal for long-haul comfort.

Read more about Lufthansaby Blane Bachelor
Airports
SFO

Save time by ordering meals for pickup from restaurants via the SFO2Go program during busy times.

Read more about SFOby Harriet Baskas
LHR

Take the Heathrow Express for the fastest route to central London, arriving at Paddington Station.

Read more about LHRby Ramsey Qubein
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines and SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Blane Bachelor

Blane Bachelor

Expert on Virgin Atlantic and Lufthansa

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.

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 round-trip 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.

Travel insights for flights from San Francisco to London

Get recent, data-driven insights about flights from San Francisco to London including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to London. Price data was last updated on March 7, 2025.

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 38 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 $661). Flying from San Francisco to London in June is currently the most expensive (average of $1,127). 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 March 13, 2025.

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 afternoon could potentially save you up to 13% on airfare.

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

Use this chart to determine the cheapest time to fly round-trip from San Francisco to London. Price data was last updated on March 3, 2024.

Travelers seeking maximum savings on their San Francisco to London flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 March 13, 2025.

The most flights from SFO to LON are scheduled on a Monday (33 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (33 on average).

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London when rainfall is around 1.6 in.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 March 13, 2025.
To help decide which airline to fly from San Francisco to London, see what other customers have to say about Delta, KLM and Austrian Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

8.0
Very good
8.0
Very good

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

8.0
Very good

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

8.0
Very good

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

8.0
Very good

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

8.0
Very good

Overall

8.0

Comfort

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    Most people fly from San Francisco (SFO) if they book a flight from San Francisco to London. On average, San Francisco has 33 outbound flights to London per day from 19 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

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

    Currently priced at $592, Iberia will fly you from San Francisco to London and back. In addition to Iberia, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Virgin Atlantic and TAP AIR PORTUGAL - these airlines can fly you to your destination from $603 and $605, respectively. You may be able to fly from San Francisco to London for 23% less than the average price by searching for these airlines.

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

    For one-way options, check prices for Vueling. According to our data, you can fly for as low as $379. Users have also found prices from $380 and $382 on Scandinavian Airlines and WestJet, respectively.

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

  • 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 (81%), Austrian Airlines (81%), United Airlines (81%).

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

    On average you can expect to pay $2,941 for a flight from San Francisco to London. The cheapest flight overall is $390 while the most popular route, (San Francisco - London Heathrow) is currently priced at $558.

  • Where are the most common layover locations when flying from San Francisco to London?

  • What are some popular things to do or see while on a layover in New York?

    Times Square, New York City Center, and Madison Square Garden are the most popular attractions in New York if you're in need of something to do during your layover. Times Square, New York City Center, and Madison Square Garden can be accessed by traveling approximately 13.6 mi, 13.6 mi, and 13.6 mi, respectively from New York John F Kennedy Intl. Travelers can book a car rental at New York John F Kennedy Intl for about $58 per day to make their sightseeing more efficient.

  • What are some popular points of interest to see during a layover in Los Angeles?

    Hollywood Bowl, Hollywood Walk of Fame, and L.A. Live are currently the most popular points of interest in Los Angeles at the moment. Hollywood Bowl, Hollywood Walk of Fame, and L.A. Live can be accessed by traveling approximately 12.5 mi, 11.7 mi, and 10.8 mi, respectively from Los Angeles. Travelers in need of a car in Los Angeles can rent one for about $33 per day.

  • What are points of interest worth seeing during a layover in Copenhagen?

    Most Copenhagen visitors opt to spend their time at Tivoli, Kongens Nytorv, and Rådhuspladsen. Tivoli, Kongens Nytorv, and Rådhuspladsen can be accessed by traveling approximately 5.3 mi, 5.1 mi, and 5.2 mi, respectively from Kastrup Copenhagen. Travelers can book a car rental at Kastrup Copenhagen for about $33 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for San Francisco to London flights?

  • 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 vacation 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 $661). Flying from San Francisco to London in June is currently the most expensive (average of $1,127). 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

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Hounslow
Hayes
Thornton Heath
Luton
Wembley
Harrow
Horley
Canterbury
Gatwick
Milton Keynes
Dover
Orpington
Watford
Croydon
Borehamwood
Bromley
Folkestone
Ilford
Aylesbury
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Browse thousands of different options on Cheapflights for your next trip

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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.

Top 10 airlines flying from San Francisco to London

Discover the top 10 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 2,558,603 searches. Data last updated March 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$323Average$578FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$428Average$540FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$465Average$659FlexibilityNo cancel feeOn-time76%
KLMCheapest$546Average$815FlexibilityNo cancel feeOn-time75%
SWISSCheapest$555Average$744FlexibilityNo cancel feeOn-time79%
Aer LingusCheapest$556Average$814FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$567Average$895FlexibilityNo cancel feeOn-time72%
IberiaCheapest$572Average$676FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$582Average$826FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$582Average$915FlexibilityNo cancel feeOn-time71%
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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.