Cheap flights from Los Angeles to London from $450

The month of September is, on average, the cheapest month to fly to London Heathrow Airport from Los Angeles, with most prices found around $907. If you aren’t able to travel during the month of September, then book flights to London Heathrow Airport from Los Angeles during October instead. Flights to London Heathrow Airport in October, while not as cheap as those in September, still average around $924.

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $783. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Los Angeles to London Heathrow Airport for around $1,094.

At midday is the cheapest time of day to fly from Los Angeles to London Heathrow Airport when you can find flight prices for as low as $836. Flying to London Heathrow Airport at midday is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to London Heathrow Airport is in the evening when prices are around $1,040.

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

You are more likely to see cheaper flights to London Heathrow Airport from Los Angeles when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $1,088 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 Los Angeles for as low as $1,009 on momondo.

There are 3 cabin classes available to choose from on Los Angeles Los Angeles to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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 158 minutes.

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

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

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

51 flights are operational daily from Los Angeles to London Heathrow Airport as of March 2026. The most popular departure time for this route is 19:00, with 64% of flights per day taking off in the evening.

As of March 2026, 357 flights take off from Los Angeles 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.