If you find yourself needing to change your Qantas flight last minute, here’s a simple guide:
Log into Qantas’ “Manage Booking” portal.
Select the flight you want to change.
Review the fare rules to see whether change fees or fare-differences apply.
Choose a new flight that suits your requirement (date, time, destination).
Confirm changes and pay any difference/fees, if... https://getmesky.com/qantas-flight-change-made-easy/