Your flight from Helsinki to Tokyo should take about 19 hrs 15 mins. We've gone through all 51 of the weekly flights to Tokyo, operated by 12 airlines, to help you compare flight times and prices.
Being flexible with your dates could help you find a cheaper flight from Helsinki to Tokyo.
If you're not sure who to fly with from Helsinki, you might like to know that Finnair is the most popular airline for this route.
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.