Cheap flights from California to London from $297

The cheapest month to fly to London from California is in September. Flight prices, which tend to average around $644, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from California averaging around $645.

The cheapest day to depart from California to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $745. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $867. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from California at noon is the least expensive time of day to depart. momondo users have found prices as low as $713 when looking at flights departing at noon. Flights to London are more costly in the evening, with an average ticket price of $824. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 $827 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from California for as low as $746 on momondo.

JetBlue, Royal Air Maroc, and SWISS are the most popular carriers operating from California to London

British Airways, United Airlines and Virgin Atlantic are the top three most popular airlines that fly to London from California according to our data. British Airways is the first choice among our users, with 41% of people opting to fly with this airline when traveling to London. Keep in mind that there are 22 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

As of May 2026, 104 flights take off from California and land in London each day. The most common flight departure time for this route is 8:00PM, with 51% of daily flights taking off in the evening.

As of May 2026, there are 731 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.