Cheap flights from San Francisco to London from ₹ 35,440

The cheapest month to fly to London Heathrow Airport from San Francisco is in February. Flight prices, which tend to average around ₹ 61,430, are often lower during this time because this is during the off-season. If you are unable to visit London Heathrow Airport during the month of February, then departing from San Francisco during the month January is also very affordable. Most momondo users find prices during this month for around ₹ 68,802.

The cheapest day to depart on your flight to London Heathrow Airport is on a Thursday when prices can be found for as low as ₹ 91,544. This is often the case because there is less demand to fly during this day of the week. Flights from San Francisco to London Heathrow Airport on a Tuesday will generally be more expensive and average around ₹ 105,863. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the evening is the cheapest time of day to fly from San Francisco to London Heathrow Airport when you can find flight prices for as low as ₹ 97,659. Flying to London Heathrow Airport in the evening is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to London Heathrow Airport is in the afternoon when prices are around ₹ 100,280.

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

You are more likely to see cheaper flights to London Heathrow Airport from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around ₹ 88,160 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from San Francisco for as low as ₹ 84,206 on momondo.

There are 3 cabin classes available to choose from on San Francisco to London Heathrow Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between San Francisco to London Heathrow Airport.

As of October 2026, prices for San Francisco to London Heathrow Airport flights are approximately 8% cheaper when compared to flights at the same time last year.

Historically, on average around 11% of flights between San Francisco and London have experienced a delay on any given week. The average delay length over the past 12 months has been 152 minutes.

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

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

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

As of October 2026, 27 flights take off from San Francisco and land in London Heathrow Airport each day. The most common flight departure time for this route is 16:00, with 68% of daily flights taking off in the afternoon.

As of October 2026, there are 190 flights per week flying from San Francisco to London Heathrow Airport. The most common day of the week flights depart is Mon, with 20% of flights taking off on this day.