Cheap flights from London to San Francisco from ₹ 56,561

In general, February is the cheapest month to fly from London to San Francisco. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around ₹ 51,445. If you aren’t able to travel to San Francisco during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of ₹ 55,017.

The cheapest day to depart from London to San Francisco is on a Wednesday. Travellers who choose to depart for San Francisco on a Wednesday will often find tickets for as low as ₹ 73,946. The most expensive day to fly to San Francisco is Tuesday, with ticket prices averaging around ₹ 98,155.

The cheapest time of day to fly to San Francisco is at midday when flights can be purchased for as low as ₹ 70,106. Flights in the afternoon are often more expensive, with an average ticket price of ₹ 79,462.

Fly from London Heathrow to San Francisco for the best London - San Francisco flight prices

You are more likely to see cheaper flights to San Francisco from London when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around ₹ 67,669 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from London for as low as ₹ 59,650 on momondo.

There is only 1 cabin class available to choose from on London to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 35% on your flight if you consider stops on a London to San Francisco flight.

As of May 2026, prices for London to San Francisco flights are approximately 33% more expensive when compared to flights at the same time last year.

Historically, on average around 12% of flights between London and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 144 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Wednesday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the fewest delays on this route over the last 12 months, with about 11% of their flights experiencing any sort of delay.

29 flights are operational daily from London to San Francisco as of May 2026. The most popular departure time for this route is 10:00, with 56% of flights per day taking off in the afternoon.

As of May 2026, there are 209 flights per week flying from London to San Francisco. The most common day of the week flights depart is Mon, with 20% of flights taking off on this day.