Also asked, how long does it take to clear customs in Tokyo?
I would aim to get to the airport around 30 minutes after the projected landing time. Since immigration and baggage claim still takes some time, it's unlikely your friend can be out of customs within 30 minutes. Where you are staying in Tokyo determines how you are going to get there at such an early hour.
Subsequently, question is, do you go through customs when leaving Japan? Customs InspectionPassengers leaving Japan are also required to undergo Customs procedures. If you are taking foreign goods out of Japan or carrying cash in excess of 1 million yen etc., please fill out the necessary information in the designated forms and submit them at the Customs counter.
Also know, how long does it take to clear customs at Narita airport?
30-60 minutes
How long does it take to get through Narita airport security?
Allow 30 minutes for clearing outbound immigration and security.
