Netflights is free and simple to use. Having them all in one place makes it easy to compare prices and find the best deal for you.
Did you know that Tokyo has zero airports? The cheapest airline to fly with is normally Cathay Pacific, but keep an eye out for other options too.
Beijing Capital Int. Airport is the cheapest airport to fly to Tokyo from. Searching by month is the best way to get a feel for the overall cost of flights throughout the year.
Need somewhere to stay when you get there? You can add also accommodation and car hire to your Tokyo booking on Netflights.