Cheap flights from San Francisco Bay Area to London from £235

In general, January is the cheapest month to fly from San Francisco Bay Area to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £334. The month of September is another great option to travel to London Heathrow Airport, with average flight prices from San Francisco Bay Area averaging around £558.

On average, the least expensive day to fly to London Heathrow Airport from San Francisco Bay Area is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £554. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Tuesday is £737.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from San Francisco Bay Area to London Heathrow Airport in the morning for as low as £554. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £881 on average. Flights to London Heathrow Airport from San Francisco Bay Area at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You are more likely to see cheaper flights to London Heathrow Airport from San Francisco Bay Area when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £618 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 Bay Area for as low as £565 on momondo.

There are 4 cabin classes available to choose from on San Francisco Bay Area 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.

British Airways, Delta, and Alaska Airlines are the most popular carriers operating from San Francisco Bay Area to London Heathrow

Virgin Atlantic, United Airlines and British Airways are the top three most popular airlines that fly to London Heathrow Airport from San Francisco Bay Area according to our data. Virgin Atlantic is the first choice among our users, with 44% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 6 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

As of July 2026, there are 41 flights per day flying from San Francisco Bay Area to London Heathrow Airport. The most common time of day flights depart is 16:00, with 59% of flights taking off in the afternoon.

As of July 2026, 290 flights take off from San Francisco Bay Area and land in London Heathrow Airport each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.