Originally Posted by
mariof
I'm not sure this is possible.
Maybe buy a ticket for the same dates, fly outbound, split PNRs, change one PNR. That would set you back at least one of the freshly increased change fees, likely some fare difference too.
As far as I know there is no way to combine PNRs together, so you'd have to start off with a single PNR. But this, by definition, means you and your niece must buy the same itinerary.
All correct. All passengers on a single PNR must be booked together at the same time, fly on the exact same flights on the same dates, and be booked in the same booking code...and for upgrades either all passengers on the PNR or none can be upgraded.