Cheap flights from South Korea to Japan from £50

The cheapest month to fly to Japan from South Korea is in August. Flight prices, which tend to average around £121, are often lower during this time because this is during the off-season. If you don’t want to visit Japan in August, then you should wait until June to fly from South Korea, when ticket prices are also cheap, with an average price of £122.

The cheapest day to depart from South Korea to Japan is on a Thursday when prices can be found for as low as £169. On the other hand, Monday is the most expensive day to depart from South Korea because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £207.

Our data shows that the cheapest South Korea 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 £173. In the evening is when there is more demand to fly to Japan, so prices are often more expensive at around £236 per ticket.

Fly from Incheon Intl to Tokyo Narita for the best South Korea - Japan flight prices

You are more likely to see cheaper flights to Japan from South Korea when booking weeks ahead of your departure date. In general, you can expect to find flights to Japan for around £170 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 South Korea for as low as £142 on momondo.

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

Jeju Air, Eastar Jet, and Jin Air are the most popular carriers operating from South Korea to Japan

Asiana Airlines, Japan Airlines and Jeju Air are the top three most popular airlines that fly to Japan from South Korea according to our data. Asiana Airlines is the first choice among our users, with 37% of people opting to fly with this airline when travelling to Japan. Keep in mind that there are 3 different airlines that fly to Japan on a routine basis, so you have a few additional options to choose from.

Historically, on average around 9% of flights between South Korea and Japan have experienced a delay on any given week. The average delay length over the past 12 months has been 105 minutes.

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

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

According to our data, Trinity Airways (Formerly T'way Air) have had the fewest delays on this route over the last 12 months, with about 5% of their flights experiencing any sort of delay.

As of October 2026, there are 279 flights per day flying from South Korea to Japan. The most common time of day flights depart is 08:00, with 45% of flights taking off at midday.

As of October 2026, 1,957 flights take off from South Korea and land in Japan each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.