Originally Posted by
HoKo
Since HND and NRT are co-terminals in the same city if I have a segment booked HNL - NRT and I want to switch it to HNL-HND is this permissible or would it be considered a routing change?
It is a routing change and is not permitted (unless you get lucky with an agent to change it). Once ticketed, the only change you can make is date and time.