Your flight from Seoul to Tokyo should take about 15 hrs 50 mins. We've gone through all 23 of the weekly flights to or via Tokyo, operated by four airlines, to help you compare flight times and prices. At the moment, the cheapest flight is £236.
Or, if you're fairly flexible on dates, try to get a last minute-deal by regularly checking the Netflights website.
Tokyo actually has two airports – but New Tokyo International Airport is normally the cheapest one to fly into. If you're not sure who to fly with from Seoul, you might like to know that Lufthansa is the most popular airline for this route.
If you can’t quite find what you’re looking for, try checking the cost of flights to other cities in Japan.