$663 Cheap British Airways flights London (LHR) to San Francisco (SFO)

Finding cheap one-way British Airways flights from LHR to SFO from $663 on Expedia is easy — just filter by “Price (lowest to highest).” Alternatively, check out our affordable round-trip fares from $600 for your next getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

February is one of the most affordable months to jet away to San Francisco with British Airways. You could also find great deals on one-way and round-trip fares in April.

To find cheap flights from LHR to SFO with British Airways, begin your search about one month before your planned departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another useful tip? Booking on Sunday can lead to average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

British Airways has direct flights from Heathrow Airport (LHR) to San Francisco Intl. Airport (SFO), with 11 departures each week. Simply use the “Nonstop” and “Airline” filters during your search on Expedia to see all direct British Airways flights to SFO.

Take off from Heathrow Airport (LHR) for San Francisco Intl. Airport (SFO) on a direct British Airways flight, and you’ll be in the skies for approximately 11h 17m.

If you’re looking for flexibility, Wednesday offers the most choice for British Airways flights from Heathrow Airport (LHR) to San Francisco Intl. Airport (SFO). You can select from 2 different departures.

The first British Airways flight from LHR to SFO takes off at 11:45AM UTC+0, touching down at 3:00PM UTC-8. If you prefer to jet off later in the day, the last British Airways flight leaves LHR at 3:20PM UTC+0 and touches down at SFO at 6:45PM UTC-8. Flying before midday is often a wise choice as morning and mid-morning flights are least likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

San Francisco Intl. Airport (SFO) is the main San Francisco gateway for British Airways flights from Heathrow Airport (LHR).

On a standard economy flight with British Airways from LHR to SFO, passengers can bring 1 checked-in bag up to 50 lb with dimensions no larger than 29 inches x 15 inches x 16 inches in total. For hand luggage, you can have 2 cabin bags weighing up to 50 lb and measuring no more than 19 inches x 9 inches x 17 inches. Weight and size restrictions may vary based on your cabin class and fare type. To make sure you won’t face extra charges at the airport, double-check your British Airways booking or go to the airline’s website before loading up your suitcase.

Traveling from LHR to SFO with British Airways comes with a host of benefits, such as a 4-star airline rating and an excellent in-flight experience. Plus, when booking through Expedia, One Key™ members can earn OneKeyCash™* to use on select future travel purchases. That’s in addition to the British Airways Executive Club points you can earn with British Airways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

For the Heathrow Airport (LHR) to San Francisco Intl. Airport (SFO) route, British Airways typically operates Airbus A380-800 and Boeing 777-300ER planes. Remember that last-minute changes can occur for operational demands, so your flight may be on a different aircraft.

Typically, you can cancel or modify your flight, although there may be a charge if you booked over 24 hours ago. Need to keep your options open? Apply the “Changes included” or “No cancel fee” filter to find flights that won’t penalize you if you have to alter your plans. To update your booking, visit “Trips,” select your flight and click on “Manage Booking” for more information.