Cheap flights from California to London from £247

The cheapest month to fly to London from California is in September. Flight prices, which tend to average around £440, are often lower during this time because this is during the off-season. The month of October is another great option to travel to London, with average flight prices from California averaging around £448.

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £496. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from California to London for around £596.

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £513. Flights at midday are often more expensive, with an average ticket price of £647.

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

You are more likely to see cheaper flights to London from California when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £574 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from California for as low as £531 on momondo.

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

Lufthansa, TAP AIR PORTUGAL, and LEVEL are the most popular carriers operating from California to London

Virgin Atlantic, British Airways and United Airlines are the top three most popular airlines that fly to London from California according to our data. Virgin Atlantic is the first choice among our users, with 46% of people opting to fly with this airline when travelling to London. Keep in mind that there are 13 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

76 flights are operational daily from California to London as of March 2026. The most popular departure time for this route is 18:00, with 74% of flights per day taking off in the evening.

As of March 2026, there are 532 flights per week flying from California to London. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.