$342 Cheap Flights from San Francisco (SFO) to London (LCY)

You can find cheap one-way flights from $342 and cheap return flights $808 San Francisco, CA (SFO-San Francisco Intl.) to London (LCY-London City) with Expedia. One-way flights typically cost between $530 and $2795, and return flights often range between $886 and $4072. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when San Francisco, CA (SFO-San Francisco Intl.) to London (LCY-London City) ticket fares go up or down.

*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.

The cheapest month to fly from SFO to LCY is November when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.

Enter SFO to LCY and your travel dates, then apply the 'Nonstop' filter to see only direct flights.

To find a cheap flight from San Francisco, CA (SFO-San Francisco Intl.) to London (LCY-London City), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

The earliest flight from San Francisco International Airport (SFO) to London City Airport (LCY) typically departs at around 12:15 AM, operated by American Airlines and CJ. This seasonal service is active in January, making it a great option for winter travel to Europe. An early departure allows you to arrive in London with a full day ahead of you. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

The most popular departure times for flights from San Francisco, CA (SFO-San Francisco Intl.) to London (LCY-London City) are in the early morning, from 6am to 9am. About 38% of passengers prefer this time window. Many major carriers, including Delta Air Lines, United Airlines, and Air Canada, offer flights during this window. This timing is popular because it allows you to arrive in London with a full day ahead of you.

A flight from SFO to LCY with a layover takes around 19 hours, with the route covering approximately 5,368 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.

Business class seats are offered on the SFO to LCY route. Airlines that offer business class service on this route include:

• KLM
• Air Canada
• Lufthansa
• United Airlines
• American Airlines
• Swiss International Air Lines
• ITA Airways
• Aer Lingus
• Delta Air Lines
• Air France

It's easy to earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to London (LCY-London City) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

From San Francisco Intl. (SFO), you can fly into Heathrow (LHR), London City (LCY), London Intl. (YXU) and Gatwick (LGW) in London. Some flights may connect through major hubs like Los Angeles Intl. (LAX), Seattle - Tacoma Intl. (SEA), Kastrup (CPH) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from San Francisco, CA (SFO-San Francisco Intl.) to London (LCY-London City) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a San Francisco, CA (SFO-San Francisco Intl.) to London (LCY-London City) London Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your San Francisco, CA (SFO-San Francisco Intl.) to London (LCY-London City) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.