Skip to main content
Beginning of main content

Cheap Flights from San Francisco to London $438.93

Search over 321,000 hotels worldwide and 400 airlines worldwide.
Secure incredible value with Expedia’s Price Guarantee
No Expedia cancellation fee to change or cancel almost any hotel reservation.

Cheapest Flights from San Francisco to London (SFO to LHR)

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

Interesting Facts About Flights from San Francisco to London (SFO to LHR)

Question : If having the most departure times is important to you, are there particular days that offer more options than others?
Answer : With 24 total flight time options, Sunday and Saturday provide the most flexibility from SFO to LHR. Wednesday currently offers the lowest number of flight times with 16 options.

Question : If your plans are flexible, have you considered changing your departure day?
Answer : Tuesday is your lowest-cost day to fly in February. Being flexible with your travel days garners you even more savings during your booking.

Question : What are the chances this flight will be on schedule?
Answer : Passengers are currently getting to their destination on schedule 59% of the time, which ranks in the bottom half across all routes. When a flight is delayed, it averages between 10-20 minutes.

Question : Looking for the cheapest flight over the next 30 days?
Answer : As of January 16th, the cheapest day to fly from San Francisco to London is February 1st. Tickets have been sold for 12% below the average price for this route.