Your flight from Bologna to Tokyo should take about 20 hrs 25 mins. We've gone through all six of the weekly flights to or via Tokyo, operated by two airlines, to help you compare flight times and prices.
Or, if you're fairly flexible on dates, try to get a last minute-deal by regularly checking the Netflights website.
In Tokyo, New Tokyo International Airport (NRT) is usually the cheapest airport to fly to, but there are one airports to choose from. Not sure who to fly with? Etihad Airways & Emirates are the most popular airlines available from Bologna.
But if you can't find one which is right for you, try looking at flights to other cities in Japan to check out some other options.