Picture: Suitcase ready for travel
1. Osaka - Tokyo route over 7 million passengers
2. Sapporo - Tokyo over 7 million passengers
3. Fukuoka - Tokyo over 6 million passengers
4. Naha- Tokyo over 4 million passengers
Total over 24 million domestic passenger trips based on chart in article below. Source Amadeus
Source: Top flights
May 14th 2012,
The Economist online
http://www.economist.com/blogs/graphicdetail/2012/05/daily-chart-8