Get price drops, best fare alerts, deals & personalised recommendations! Explore now
✕
  • Flights
  • Packages
  • Hotels
  • Cars
Round-trip
Coach

Refine your search by airline, by city or airport or direct flights

Here's why travelers choose CheapOair
Price Match Promise
Find great flight deals to destinations worldwide
24/7 Global Concierge
Speak to our travel experts: anytime, anywhere
ClubMiles Rewards
Earn points and air miles to maximize your rewards
Easy Cancellations
Convenient options online and 24/7 global concierge.

Cheap Flight Deals from San Francisco to London

Call us for phone only deals at 
Round TripOne Way
SFO San Francisco
LON London
From $463.99
Feb 2, 2026 - Feb 10, 2026
Book Now
SFO San Francisco
LON London
From $466.99
Jan 21, 2026 - Jan 28, 2026
Book Now
OAK Oakland
LON London
From $683.99
Jan 14, 2026 - Jan 29, 2026
Book Now
OAK Oakland
LON London
From $906.99
Mar 17, 2026 - Mar 24, 2026
Book Now
SFO San Francisco
LON London
From $1466.77
Jan 11, 2026 - Jan 15, 2026
Book Now
*All fares above were last found on:
Fares are one way/round trip. Fares incl. all fuel surcharges, taxes & fees and our service fees. Displayed fares are subject to change and cannot be guaranteed at the time of booking. See all booking terms and conditions.

When’s a good time to book a flight from San Francisco to London?

What’s the cheapest day of the week to fly from San Francisco to London?‡

Search Cheap Flights
What is the cheapest month to fly from San Francisco to London?‡

Search Cheap Flights

‡This information is based on historical data from the last 365 days.

Finding Affordable Flights from San Francisco to London
  • Plan Ahead - One of the keys to securing cheap flights from San Francisco to London is to plan your trip well in advance. Airlines often offer lower prices for those who book tickets months ahead. Keep an eye on special promotions and sales events, which can yield significant savings.
  • Flexibility is Key - Being flexible with your travel dates can also lead to substantial cost savings. Consider flying during off-peak seasons or on weekdays when prices tend to be lower.
  • Set Price Alerts - To keep tabs on flight prices, consider setting up fare alerts. These alerts will notify you when fares from San Francisco to London drop, giving you the opportunity to grab cheap deals.
  • Consider Nearby Airports - If London has multiple airports, check the prices at each one. Sometimes, flying into a nearby airport and then taking a short train or bus ride to your destination can be a much cheaper option.
  • Bundle and Save - Booking your flight and accommodation together as a package can often result in significant savings. CheapOair offers these bundled deals, so make sure to explore this option.

When is the Cheapest Time to Book Flights from San Francisco to London?

‡

Got flexible travel dates? Use our flight data from the past year to discover ideal times to fly from San Francisco to London. Find out which months and days typically offer lower fares and score our best savings.

CheapOair provides the predicted prices for one-way trips or round-trips with a duration of 7 days for domestic and 14 days for international trips based on historical data and available flight information. Graphs are estimates only. Prices are subject to change and can't be guaranteed until ticketed.
Estimated price for
Round-trip

‡Graphs are estimates only. Based on historical data and available flight information. Prices are subject to change and cannot be guaranteed until ticketed.

What Our Customers Say About Our Service?

sitejabber-review
Excellent | 4 Stars
Based on 233,423 reviews
Great | 4.1 Stars
Based on 23,777 reviews
Submit A Review
  • Aug 31, 2025 Ray Hobson Very reliableThis was my first time using this site and I was very please with how everything was handled. Right after I booked my flight I got a call from one of the associates letting me know i didn't pick out my seats, and choose my seat for my trip there and back from my destination. I was kept up to date in my flight information and they made sure I got my boarding pass. My trip was very stress free. I will be using them again. Thank you!

    Read More

  • Aug 28, 2025 MariaEsperanza Estilo Nicko Went Above and BeyondI had to change the return flight of two out of four passengers in our group. Because only half of the group need to travel differently, it took several calls to Iberia Airlines directly and because of the time difference, Nicko coordinated and helped me over a couple of days. Throughout the experience, he explained what he was doing and why he needs to put me on hold and why he needs to call me back the following day, He was very knowledgeable, professional and empathetic to my predicament. Nicko owned the issues and the process and was very transparent with cost and every details of the transactions. I am very grateful and because of him, I will always trust CheapOAir with my travel needs. -Maria E.E.

    Read More

  • Aug 13, 2025 Godswill Yakubu Best Travel app to check.You truly get exceptional value for a lower price, and it feels completely fair. Since I started booking with this app, I’ve come to appreciate why they stand out as the best. It’s been a wonderful experience that makes me feel understood and valued as a customer.

    Read More

See all reviews

San Francisco to London Flight Route Information

Travel Distance:5,383 Miles
Airlines Flying This Route: British Airways, Finnair, American Airlines
Weekly Flights:2
Avg. Flight Duration:15.15 Hours

Insights About Flying from San Francisco to London

Q. Which is the high season to travel from San Francisco to London?

A. The month of January is considered the high season for flying from SFO to LON. Traveling during the high season can affect ticket prices and availability, making this data crucial for trip planning.

Q. How many direct flights are available from SFO to LON?

A. There are a total of 63 direct flights from San Francisco to London. For travelers seeking convenience and shorter travel times, this data is important when choosing flight options.

Q. Which is the low season to travel from San Francisco to London?

A. April is considered the low season for traveling from San Francisco to London, United Kingdom. Travelers looking for cost-effective options and fewer crowds may consider traveling during this period.

Q. How many daily flights are there between San Francisco to London?

A. There are as many as 2 daily flights available for travelers between SFO to LON. This data offers flexibility in choosing departure times that best suit your schedule.

Q. At what time does the last flight depart to London?

A. The last flight to London typically departs between 10:00PM - 11:00PM. Travelers who prefer late-night departures will find this information valuable for planning their journey.

Q. What percentage of travelers spent an average of 6 days in London, United Kingdom?

A. Approximately 14.77% of travelers spent an average of 6 days exploring London. This information can assist in planning the duration of your stay in London

Q. What percentage of SFO to LON flyers traveled with kids under 14?

A. About 8% of passengers on flights from San Francisco to London were accompanied by children under the age of 14. This information is useful if you're planning a family trip and want to know how common it is to travel with young children on this route.

Q. What percentage of San Francisco to London travelers were over 60 years old?

A. A notable 27% of travelers were aged 60 or older. This statistic provides insights for senior travelers or those seeking a mature travel demographic.

Q. What percentage of SFO to LON travelers were millennials?

A. Millennials make up a significant portion of travelers on this route, accounting for 15% of all passengers. If you're a millennial looking to connect with like-minded travelers, this statistic might interest you.

Q. What percentage of San Francisco to London travelers were female?

A. Almost half of the passengers, approximately 39% were female. Knowing the gender distribution can be useful for solo female travelers or those interested in gender-related travel insights.

Q. On which days one can have the most flight options in London?

A. Friday offer the most flight options in London.

§ All flight facts are based on last 3 months' data except the highest and lowest booking months that are based on last 3 months' data.

Cheap Flights from San Francisco to London

Norwegian launches direct flights from San Francisco to London started on 31 March 2019

Norwegian has launched direct flights from San Francisco to London started on 31 March 2019. This new flight route will be operated on the 787 Dreamliner fleet of the airline.

Looking for flights from San Francisco (SFO) to London (LON)? Find affordable air travel deals on CheapOair and save big on air tickets online. Introduce yourself to the megalopolis city of London by starting off with popular attractions like the Buckingham Palace, London Eye, Marble Arch, St Paul's Cathedral, Tower of London and Westminster Abbey. You can also take to visiting the lesser known, non touristy end of the city to appreciate the true London. Contrary to the popular notion of British food being bland, the dishes served in some of the cafes at Charlotte Street and Clapham Junction will surely leave you craving for more. To reach London, LON from San Francisco, SFO you can choose from the top airlines, American Airlines, Lufthansa and British Airways for a comfortable and convenient journey. The average time taken by a flight to cover the distance of 5,380 miles between the two cities is about 11 hours.

Download Our App

Get CheapOair deals on the GO!

Download
Check Your Flight Status

Get there on time, every time!

Check Status

Flights from San Francisco

» More Flights from San Francisco

Flights to London

» More London Flight Routes

Check San Francisco to London flight status

Earn 2X points on CheapOair app
Earn 2X points on CheapOair app
Book on our apps (iOS & Android) to double your points.
  • Get notified when prices drop for trips you are planning
  • Change or cancel your flights on the go!
  • Get flight alerts and updates for your trips
Switch to the app
Scan QR and installScan QR and install

Award-winning assistance, affordable travel

  • Excellent | 4 Stars
    Based on 233,423 reviews
    This rating is as of 02/10/2025
    Close[x]
  • Great | 4.1 Stars
    Based on 23,777 reviews
  •   American Business Awards
    2020 Gold Stevie – Product
    Management Team of the Year
  •   Stevie Awards for Sales & Customer Service
    2021 Bronze Stevie – Customer Service
    Department of the Year
  •  

Easy Access

Connect with Us
  • Quick Links
  • Popular Airlines
  • Popular Flight Routes
  • Top U.S. Destinations
  • Top International Destinations
Explore our cheap airfare options by carrier, with over 500 options to choose from.
Book one of our most popular flight routes with three easy clicks.
Find cheap airline tickets to popular U.S. destinations from coast to coast.
Get cheap air travel to global destinations in Europe, Asia and beyond.
partners logos

© 2006-2025 Fareportal, Inc. All rights reserved. Privacy Policy and agree to our Terms and Conditions. California: CST #2073455, Florida: ST37449, Hawaii - SOT#TAR-7560-0, Washington: WASOT #602755832 (affiliate of Travelong, Inc.)