Arriving Tokyo
Haneda or Narita
Haneda Airport — If time and convenience are your priorities, Haneda is much closer to central Tokyo.
I personally recommend arriving at Haneda if you’re staying in Japan for a short time, as the access to the city is quicker and easier.
How to access Haneda International Airport
https://tokyo-haneda.com/en/access/index.html
Narita Airport — If you’re looking to keep airfare costs down, Narita (located in Chiba Prefecture) can be a good option.
If you’re staying near a Narita Express stop, the journey from Narita to JR Tokyo Station takes about one hour, so the travel time isn’t too bad.
Narita Express (JR East Railway)
https://www.jreast.co.jp/en/multi/nex/
How to access Narita International Airport

