Flying from Singapore to Port Moresby

Hey everyone!
Together with two friends, I'd like to fly from Singapore to Port Moresby. We know that this is only possible with Air Niugini. We are trying to book the flight, but no travel agency in the Netherlands seems to be booking these flights. We've also read that it's possible to get a discount if you show an isic card, but we don't know if that's also possible if we book online.
We'd like to know about your experience with Air Niugini and if you booked online or at a travel agency. And maybe someone knows about the discount?
Thanks a lot!
Christine

I've never heard about discounts for ISIC card holders on Air Niugini.
Have you tried emailing Air Niugini to ask them about this?
One discount you may still get if flying to the country on Air Niugini is a 50% tourist discount on domestic flights though - again, ask if this still exists. You really do have to ask as they never really told about it unless specifically requested!

If you have no luck elsewhere, this Singaporean travel agency could sell you the ticket, paid by credit card.