Cheap flights from Los Angeles to London from $346

The cheapest month to fly to London from Los Angeles is in September. Flight prices, which tend to average around $639, are often lower during this time because this is during the off-season. The month of August is another great option to travel to London, with average flight prices from Los Angeles averaging around $654.

The cheapest day to depart from Los Angeles to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $744. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $863. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

Flying to London from Los Angeles at noon is the least expensive time of day to depart. momondo users have found prices as low as $728 when looking at flights departing at noon. Flights to London are more costly in the evening, with an average ticket price of $815. 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 Los Angeles - London flight prices

You are more likely to see cheaper flights to London from Los Angeles when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $799 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Los Angeles for as low as $721 on momondo.

No. A direct flight is the cheapest option for a flight between Los Angeles to London.

As of May 2026, prices for Los Angeles to London flights are approximately 3% more expensive when compared to flights at the same time last year.

JetBlue, United Airlines, and KLM are the most popular carriers operating from Los Angeles to London

British Airways, Virgin Atlantic and American Airlines are the top three most popular airlines that fly to London from Los Angeles according to our data. British Airways is the first choice among our users, with 48% of people opting to fly with this airline when traveling to London. Keep in mind that there are 21 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

Historically, on average around 10% of flights between Los Angeles and London have experienced a delay on any given week. The average delay length over the past 12 months has been 172 minutes.

Generally, flights departing in the evening tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Thursday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 7% of their flights experiencing any sort of delay.

Lisbon (LIS) was the most common stop: 30% of momondo users choosing 1-stop flights on this route connected there.

Flights via New York (JFK) offer the lowest average round-trip price of $507.

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 12h 07m.

Denver (DEN) has the shortest average layover time for this route: 1h 15m.

As of May 2026, there are 53 flights per day flying from Los Angeles to London. The most common time of day flights depart is 8:00PM, with 57% of flights taking off in the evening.

374 flights are operational weekly from Los Angeles to London as of May 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.