I need your advice. I purchased a ticket with my Brazilian passport in January, and since then I received my Australian Passport that has a different 'first name', 'last name'. I called Qantas to change the name, and they said I would have to cancel my flight, get the refund, and purchase a new ticket with the current available price. They said that the Qantas ticket flight is not transferable, even though I'm not transferring the ticket, I'm changing my name to match the Australia Passport. Any advice? What can and should I do?
I would use the Brazilian passport to board the plane, and then use the Australian passport at immigration. I have been in the same situation, I booked a flight to Italy with my Aussie passport, but when I got there I used my Italian passport just fine. I’m not sure if you have to show evidence of a Visa to check-in staff, or if showing them your Aussie passport is enough, I would call the airline about that.