Cheap flights from Japan to London from £279

In general, March is the cheapest month to fly from Japan to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £238. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from Japan averaging around £321.

On average, the least expensive day to fly to London Heathrow Airport from Japan is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £994. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £1,381.

According to our data, the cheapest time of day to fly to London Heathrow Airport is at midday. momondo users have found flights departing from Japan to London Heathrow Airport at midday for as low as £1,079. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are £1,291 on average. Flights to London Heathrow Airport from Japan in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You could potentially save up to 19% on your flight if you consider stops on a Japan to London Heathrow Airport flight.

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

British Airways, Japan Airlines and Air China are the top three most popular airlines that fly to London Heathrow Airport from Japan according to our data. British Airways is the first choice among our users, with 35% of people opting to fly with this airline when travelling to London Heathrow Airport. Keep in mind that there are 4 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 14% of flights between Japan and London have experienced a delay on any given week. The average delay length over the past 12 months has been 113 minutes.

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

Wednesday 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 12% of their flights experiencing any sort of delay.

The number of flights available between Japan and London Heathrow Airport is 14 per day as of May 2026. The most frequent departure time is 09:00, with 64% of daily flights leaving at midday.

As of May 2026, 98 flights take off from Japan 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.