Cheap flights from London Heathrow Airport to San Francisco Bay Area from £343

The cheapest month to fly to San Francisco Bay Area from London Heathrow Airport is in February. Flight prices, which tend to average around £415, are often lower during this time because this is during the off-season. If you’re not able to fly to San Francisco Bay Area in February, then September is your next best option. Flight prices from London Heathrow Airport to San Francisco Bay Area during September average around £428.

Our data shows that Thursday is the least expensive day to fly to San Francisco Bay Area. Tickets to fly out on this day can be as low as £560. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to San Francisco Bay Area on Sunday is £660.

According to our data, the cheapest time of day to fly to San Francisco Bay Area is in the morning. momondo users have found flights departing from London Heathrow Airport to San Francisco Bay Area in the morning for as low as £555. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. At midday is when there is more demand to fly to San Francisco Bay Area, so prices are often more expensive at around £817 per ticket.

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

You are more likely to see cheaper flights to San Francisco Bay Area from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco Bay Area for around £502 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 Bay Area from London Heathrow Airport for as low as £470 on momondo.

There are 4 cabin classes available to choose from on London Heathrow to San Francisco Bay Area flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

British Airways, LEVEL, and SWISS are the most popular carriers operating from London Heathrow to San Francisco Bay Area

Virgin Atlantic, British Airways and Lufthansa are the top three most popular airlines that fly to San Francisco Bay Area from London Heathrow Airport according to our data. Virgin Atlantic is the first choice among our users, with 39% of people opting to fly with this airline when travelling to San Francisco Bay Area. Keep in mind that there are 18 different airlines that fly to San Francisco Bay Area on a routine basis, so you have a few additional options to choose from.

As of February 2026, 31 flights take off from London Heathrow Airport and land in San Francisco Bay Area each day. The most common flight departure time for this route is 11:00, with 58% of daily flights taking off at midday.

As of February 2026, 217 flights take off from London Heathrow Airport and land in San Francisco Bay Area each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.