To see a wider selection of flights to Tokyo, try searching by city rather than by airport.
For flights to , Egyptair usually has the best prices. But it's best to go through your results thoroughly, to find the best option for you.
To find the best deal, why not look at other options in Japan? Some other cities may have cheaper options for flights and accommodation.
When it comes to getting cheap flights to , the most important thing is to book in advance. Bargain deals and last-minute offers for Tokyo do crop up, but you'll have to be flexible to get them. If you want to fly at a specific time, it's always best to book early. The same applies to hotels – the earlier you book, the more choice you'll have.