Cheap flights from London Heathrow Airport to Japan from £348

The cheapest month to fly to Japan from London Heathrow Airport is in November. Flight prices, which tend to average around £701, are often lower during this time because this is during the off-season. If you don’t want to visit Japan in November, then you should wait until January to fly from London Heathrow Airport, when ticket prices are also cheap, with an average price of £703.

The cheapest day to depart from London Heathrow Airport to Japan is on a Monday when prices can be found for as low as £1,142. On the other hand, Friday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £1,285.

Our data shows that the cheapest London Heathrow Airport to Japan flights are usually those with departure times in the morning. Our users have found flights to Japan in the morning for as low as £1,182. At midday is when there is more demand to fly to Japan, so prices are often more expensive at around £1,348 per ticket.

Fly from London Heathrow to Tokyo Narita for the best London Heathrow - Japan flight prices

You are more likely to see cheaper flights to Japan from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Japan for around £869 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Japan from London Heathrow Airport for as low as £663 on momondo.

Etihad Airways, Air China, and China Eastern are the most popular carriers operating from London Heathrow to Japan

Japan Airlines, Air China and Cathay Pacific are the top three most popular airlines that fly to Japan from London Heathrow Airport according to our data. Japan Airlines is the first choice among our users, with 39% of people opting to fly with this airline when travelling to Japan. Keep in mind that there are 25 different airlines that fly to Japan on a routine basis, so you have a few additional options to choose from.

Historically, on average around 12% of flights between London and Japan have experienced a delay on any given week. The average delay length over the past 12 months has been 128 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

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

According to our data, Japan Airlines have had the fewest delays on this route over the last 12 months, with about 9% of their flights experiencing any sort of delay.

13 flights are operational daily from London Heathrow Airport to Japan as of May 2026. The most popular departure time for this route is 19:00, with 39% of flights per day taking off in the evening.

As of May 2026, there are 97 flights per week flying from London Heathrow Airport to Japan. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.