Flying from London to San Francisco, CA can be expensive. Our search helps you compare cheap flights, airfare deals, and flight tickets across airlines and agencies so you can book at the best price.
We scan trusted travel agencies and airline booking systems for the route London - San Francisco, CA (LON - SFO). We do not sell tickets or add fees - you choose where to buy.
Airfares vary by date, time, and airport. Use filters to find the best option by departure/arrival time, number of stops, airline or alliance, and booking channel.
If your dates are flexible, check the low-fare calendar to find the cheapest days. Booking round-trip in one order often reduces fees, and prices usually rise as departure approaches.
We also recommend you to look through the prices for return tickets from San Francisco, CA to London.
Airfares found by our users in the past 24 hours
The price for these dates could change. Use search to get the best price.
Average round-trip airfares from London to San Francisco, CA by months
| Month | Round-Trip |
|---|---|
| February 2026 | 11.02 - 18.02from 43 523र |
| March 2026 | 08.03 - 15.03from 31 566र |
| April 2026 | 24.04 - 02.05from 34 342र |
| May 2026 | 22.05 - 30.05from 34 132र |
| June 2026 | find now |
| July 2026 | 26.07 - 28.08from 74 043र |
| August 2026 | 08.08 - 24.08from 53 787र |
| September 2026 | find now |
| October 2026 | find now |
| November 2026 | find now |
| December 2026 | find now |
| January 2027 | find now |
Prices shown are based on searches from the last few days. Ticket prices can change and depend on availability at the time of booking.
Airlines are flying from London to San Francisco, CA
| Iberia Airlines | British Airways | Virgin Atlantic Airways | United Airlines |
Frequently asked questions about flights from London to San Francisco, CA
How long does the flight from London to San Francisco, CA take?
Flight duration from London to San Francisco, CA varies by route, airline, and number of stops. Direct flights are faster; connecting flights may take longer. Use our search to compare options and see exact durations for your dates.
Are there direct flights from London to San Francisco, CA?
Availability of direct flights from London to San Francisco, CA depends on the route and season. Use our search and filter by "Direct" or "Non-stop" to see only direct options. We compare offers from many airlines and agencies.
Which airlines fly from London to San Francisco, CA?
Several airlines may operate flights from London to San Francisco, CA. On this page you can see airlines that serve this route. Our search compares prices across airlines and agencies so you can choose the best offer. We do not sell tickets; you book directly with the airline or agency.
What is the cheapest month to fly from London to San Francisco, CA?
Prices from London to San Francisco, CA vary by month and demand. On this page you can see average round-trip prices by month. Use the low-fare calendar and monthly table to find the cheapest dates. Booking in advance and avoiding peak seasons often helps get the best price.