Tokyo 2020 Olympics will bring 800.000 visitors over a period of 2 months until the end of Paralympics.
Addition to that, Tourism is booming going from 10M tourists in 2010 to 40M expected in 2020.
Needless to say that airports and flights are packed, many new routes are opening to secondary cities, like Komatsu (Kanazawa) from Hong Kong, Sendai from Bangkok, and many more
in Tokyo, the US army has agreed to release 24 slots in Haneda as long as 12 of those go to the US. Since late August, announcements are made and United and Delta will move operations from Narita to Haneda. ANA is adding 13 new routes and JAL 12, we are also seeing new routes for Finnair and a few more. this is exciting and will change the landscape of tourism.
Haneda is also trialing currently a new route over Tokyo to cope with all those new aircrafts.
We now see extensive queues for take off in Narita, a bit like in the US!!