When is the deadline for reservation?
Reservation deadline is as below:
1. Buses from Osaki to Narita Airport: 20 minutes before departure time (23:59 of the day before, for the bus departing at 25:00).
2. Buses from Narita Airport to Osaki: 23:59 of the day before departure date
If seats are vacant, you can purchase tickets directly from the bus driver on the departure date.