By completing web check-in, you may skip the check-in procedures at the airport. Web check-in procedures vary depending on the time remaining prior to flight departure.

If you have a connecting flight* on the same day, web check-in service is available for both domestic and international flights starting 24 hours prior to the first scheduled departure time.
*The service is also available for itineraries including Japanese domestic flights, but it is not applicable for itineraries with only Japan domestic flights issued as domestic tickets.