London

$305+ 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — LON
Feb 25 — Mar 41
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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”
2. Select your favorite providers
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3. Compare prices and book
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The best prices from San Francisco to London are usually found in October or September, booked 20 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$587
(Cheapflightsfares)

One-way from

$305
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$685

Good round-trip deal

$681 or less

Good one-way deal

$445 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 ($206 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
Average for round-trip flights in February 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 February 20, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 2/19. 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.
Wed 3/126:30 pmSFO - LHR
Nonstop10h 30mIberia
Tue 3/183:20 pmLHR - SFO
Nonstop11h 25mIberia
Deal found 2/19$587
This Ovago deal was found by Cheapflights users on 2/18. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/295:35 pmSFO - LGW
1 stop15h 10mTAP AIR PORTUGAL
Tue 11/114:35 pmLGW - SFO
1 stop30h 10mTAP AIR PORTUGAL
Deal found 2/18$591
This Ovago deal was found by Cheapflights users on 2/20. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/94:40 pmSFO - LHR
1 stop15h 20mScandinavian Airlines
Sun 11/1610:20 amLHR - SFO
1 stop36h 15mScandinavian Airlines
Deal found 2/20$591
This Ticket deal was found by Cheapflights users on 2/20. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/95:40 pmSFO - LHR
Nonstop10h 15mVirgin Atlantic
Tue 3/2511:40 amLHR - SFO
Nonstop11h 10mVirgin Atlantic
Deal found 2/20$593
This Mytrip deal was found by Cheapflights users on 2/20. 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 stops25h 35mMultiple Airlines
Wed 4/96:00 amSTN - SFO
2 stops23h 45mMultiple Airlines
Deal found 2/20$596
This Kiwi.com deal was found by Cheapflights users on 2/18. 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.
Wed 2/2610:59 pmSFO - LGW
1 stop27h 36mMultiple Airlines
Wed 3/512:00 pmLGW - SFO
2 stops33h 33mMultiple Airlines
Deal found 2/18$599
This United Airlines deal was found by Cheapflights users on 2/18. 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 3/197:00 amSFO - LHR
1 stop20h 10mUnited Airlines
Mon 3/3112:10 pmLHR - SFO
1 stop36h 00mUnited Airlines
Deal found 2/18$613
This Travelocity deal was found by Cheapflights users on 2/19. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/91:00 pmSFO - LHR
1 stop14h 10mMultiple Airlines
Tue 3/258:55 amLHR - SFO
1 stop15h 30mMultiple Airlines
Deal found 2/19$614
This Finnair deal was found by Cheapflights users on 2/20. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/96:30 pmSFO - LHR
Nonstop10h 30mFinnair
Tue 3/2511:45 amLHR - SFO
Nonstop11h 15mFinnair
Deal found 2/20$620
This SWISS deal was found by Cheapflights users on 2/19. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/128:25 pmSFO - LGW
1 stop14h 25mSWISS
Wed 3/196:45 pmLGW - SFO
1 stop29h 40mSWISS
Deal found 2/19$627
This Delta deal was found by Cheapflights users on 2/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/254:10 pmSFO - LHR
Nonstop10h 20mDelta
Sun 5/48:40 amLHR - SFO
1 stop35h 05mDelta
Deal found 2/19$627
This Kiwi.com deal was found by Cheapflights users on 2/19. 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 4/287:05 pmSFO - LHR
1 stop18h 40mSWISS
Wed 5/78:45 amLHR - SFO
1 stop15h 25mSWISS
Deal found 2/19$630

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 February 20, 2025.

Fly from

San Francisco

Fly to

London

Route

Depart

Return

Price

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 3/12

6:30 pm-12:00 pm

Nonstop10h 30m

London Heathrow

Tue 3/18

3:20 pm-7:45 pm

Nonstop11h 25m

$587

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Mon 3/3

4:40 pm-8:30 pm

2 stops19h 50m

London Gatwick

Sun 3/9

10:40 am-3:45 pm

1 stop36h 05m

$591

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 3/9

5:40 pm-10:55 am

Nonstop10h 15m

London Heathrow

Tue 3/25

11:40 am-3:50 pm

Nonstop11h 10m

$593

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 3/24

6:30 pm-6:50 pm

2 stops17h 20m

London Heathrow

Mon 3/31

9:05 pm-4:30 pm

2 stops27h 25m

$595

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Tue 4/1

8:20 am-5:55 pm

2 stops25h 35m

London Stansted

Wed 4/9

6:00 am-9:45 pm

2 stops23h 45m

$596

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Wed 2/26

10:59 pm-10:35 am

1 stop27h 36m

London Gatwick

Wed 3/5

12:00 pm-1:33 pm

2 stops33h 33m

$599

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 3/19

7:00 am-10:10 am

1 stop20h 10m

London Heathrow

Mon 3/31

12:10 pm-4:10 pm

1 stop36h 00m

$613

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 3/9

1:00 pm-10:10 am

1 stop14h 10m

London Heathrow

Tue 3/25

8:55 am-5:25 pm

1 stop15h 30m

$614

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 3/9

6:30 pm-12:00 pm

Nonstop10h 30m

London Heathrow

Tue 3/25

11:45 am-4:00 pm

Nonstop11h 15m

$620

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Wed 3/12

8:25 pm-5:50 pm

1 stop14h 25m

London Gatwick

Tue 3/18

6:45 pm-5:25 pm

1 stop29h 40m

$627

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
FlightnetworkPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 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

Polaris Business Class includes lie-flat seats and Saks Fifth Avenue bedding.


Premium Plus offers bigger seats with extra legroom and upgraded food.

British Airways

Club Suite offers solo pods with a door for privacy on A350 aircraft.


World Traveller Plus offers extra seat width and legroom in a dedicated cabin.

Virgin Atlantic

Upper Class offers lie-flat beds and a four-course meal onboard.


Economy Delight includes extra legroom and priority boarding.

Lufthansa

Allegris cabins offer innovative seat cooling and heating features.


Premium economy features hard-shell seats allowing recline without disturbing others.

Read more about Lufthansaby Blane Bachelor
Delta

Delta One offers 180-degree flat-bed seats with premium food and drinks.


Free Wi-Fi on long-haul routes for SkyMiles members is a key benefit.

Read more about Deltaby Harriet Baskas
American Airlines

Flagship First offers 21.8” wide seats with a work desk and fully flat bed.


Flagship Business class features 20” wide seats converting to a 6’ 7” lay-flat bed.

Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines and Delta

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
Marisa Garcia

Marisa Garcia

Expert on American Airlines

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

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 February 14, 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 20 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 $1,136). 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 February 20, 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 14% 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 February 20, 2025.

The most flights from SFO to LON are scheduled on a Monday (27 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (21 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 February 20, 2025.
To help decide which airline to fly from San Francisco to London, see what other customers have to say about Delta, KLM and Finnair. 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

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

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

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

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

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

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

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

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

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

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

Food

7.3

Boarding

8.2

Comfort

8.0

Overall

8.0

Crew

8.5

Entertainment

7.9

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 26 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 $587, 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 TAP AIR PORTUGAL and Scandinavian Airlines - these airlines can fly you to your destination from $591 and $595, respectively. You may be able to fly from San Francisco to London for 25% 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 Iberia. According to our data, you can fly for as low as $307. Users have also found prices from $308 and $315 on Vueling 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 (85%), Austrian Airlines (85%), United Airlines (85%).

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

    On average you can expect to pay $2,258 for a flight from San Francisco to London. The cheapest flight overall is $387 while the most popular route, (San Francisco - London Heathrow) is currently priced at $503.

  • 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 $57 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 $32 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 $26 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 $1,136). 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
Harrow
Luton
Wembley
Horley
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Gatwick
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Dover
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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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$428Average$541FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$465Average$658FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$492Average$584FlexibilityNo cancel feeOn-time77%
SWISSCheapest$555Average$752FlexibilityNo cancel feeOn-time79%
Aer LingusCheapest$557Average$854FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$567Average$769FlexibilityNo cancel feeOn-time72%
IberiaCheapest$571Average$677FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$582Average$840FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$582Average$921FlexibilityNo cancel feeOn-time71%
KLMCheapest$586Average$787FlexibilityNo cancel feeOn-time75%
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