Your flight from Seoul to Tokyo should take about 10 hrs 25 mins. We've gone through all 30 of the weekly flights to or via Tokyo, operated by seven airlines, to help you compare flight prices and times. At the moment, the cheapest flight is £125.
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 can’t quite find what you’re looking for, try checking flight prices to other cities in Japan.