Is there an airplane version of the all rail pass in Japan?

Question:

I know there is the Japan Rail pass where you can purchase a ticket that will give you unlimited travel in Japan (or certain areas) for a set period of time. Is there anything similar with airplanes?

Answer:

The closest thing to it would be JAL's Yokoso Airpass or Welcome to Japan fare; or ANA's Star Alliance Japan Airpass or Visit Japan Fare. (The former for each airline respectively is cheaper and you need to take that airline or one in their frequent flier mileage alliance). You need to get them before you arrive in Japan, and allow a maximum of 5 flights to nearly every airport in the country. It is a huge savings over regular airfare - often less than half the cost per flight.