There are 47 flights connecting Hanoi and Tokyo every week, with the journey taking 13 hrs on average. Scroll through your results to compare flight times and prices – the cheapest flight from Hanoi to Tokyo is currently sitting at £325.
Or, if you're fairly flexible on dates, try to get a last minute-deal by regularly checking the Netflights website.
Tokyo actually has one airports to choose from – but New Tokyo International Airport (NRT) is the usually the cheapest option. If you need to fly into a specific airport, adjust your search to focus on those flights. The most popular airlines include China Airlines, Cathay Pacific & Korean Air.
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.