Within 24 hours of booking, passengers can cancel their airline ticket without additional charges.
In the event of any unforeseen event, you must cancel the plane ticket within 24 hours of the scheduled flight if it was booked at least 7 days before departure.
You must pay a flight cancellation fee when canceling a flight ticket after 24 hours (risk-free period).
On Qantas Airways, all fares are eligible for cancellation and refund.

If you have a refundable ticket, you may be eligible for a full or partial refund depending on the fare terms.
Refundable tickets typically offer more flexibility, allowing you to cancel or change your flight without incurring significant penalties.
Non-refundable tickets usually have stricter cancellation policies and may incur cancellation fees.
Cancellation fees for non-refundable tickets may vary depending on fare rules and timing of cancellation.
Qantas Airways cancellation fees may vary depending on when you cancel your flight.
Generally, the closer the cancellation is to the departure date, the higher the fees can be.