Cheap flights from California to London from $208

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from California, with most prices found around $647. If you’re not able to fly to London Heathrow Airport in February, then September is your next best option. Flight prices from California to London Heathrow Airport during September average around $677.

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $809. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $962.

According to our data, the cheapest time of day to fly to London Heathrow Airport is at noon. momondo users have found flights departing from California to London Heathrow Airport at noon for as low as $655. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $932.

Fly from Los Angeles Los Angeles to London Heathrow for the best California - London Heathrow flight prices

You are more likely to see cheaper flights to London Heathrow Airport from California when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $884 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from California for as low as $812 on momondo.

There are 4 cabin classes available to choose from on California 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.

Alaska Airlines, British Airways, and United Airlines are the most popular carriers operating from California to London Heathrow

British Airways, United Airlines and Virgin Atlantic are the top three most popular airlines that fly to London Heathrow Airport from California according to our data. British Airways is the first choice among our users, with 40% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 22 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, 104 flights take off from California and land in London Heathrow Airport each day. The most common flight departure time for this route is 4:00PM, with 56% of daily flights taking off in the afternoon.

As of July 2026, there are 728 flights per week flying from California to London Heathrow Airport. The most common day of the week flights depart is Mon, with 16% of flights taking off on this day.