Here’s an extract from the T&Cs.
Refer particularly to 14.7.6…
This is a link to the whole book of rules if you want to look further.
These Terms and Conditions form the basis of Qantas Frequent Flyer, to protect both Members and the Qantas Group.
www.qantas.com
Best of luck…
14.7 Classic Flight Rewards (excluding Classic Flight Rewards forming part of Combined Classic Flight Reward Bookings) - changes to tickets
14.7.1 Except as otherwise stated in this clause 14.7 and clause 14.8, changes are not permitted to any Classic Flight Reward at any time. Any permitted changes are subject to Classic Flight Reward availability.
14.7.2 If a booking is made that includes non-Classic Flight Reward flight(s) and Classic Flight Reward flight(s), then any changes to any Classic Flight Reward flight Segment or Segments in the combined booking may only be made in accordance with the conditions outlined in clause 14.8, and this clause 14.7 will not apply.
14.7.3 Prior to ticketing, Classic Flight Rewards may be changed without incurring a Change Fee; however, any changes will be subject to this clause 14.7 and to the advance purchase and validity provisions set out in clauses 14.2.2 and 14.6.1.
14.7.4 Subject to this clause 14.7, the following changes are permitted to a Classic Flight Reward after ticketing and prior to commencement of any travel and will incur a Change Fee (see the
Fee Schedule) per passenger:
(a) change to flight number;
(b) change to date of travel;
(c) change to class of travel;
(d) change to any Segment routing or airline;
(e) change to name (only for Flights with a Qantas (QF) flight number on the ticket that are operated by Qantas); and
(f) request to cancel ticket and re-credit Qantas Points. Please note that only Qantas Points that would not have expired will be re-credited.
14.7.5 Subject to this clause 14.7, the following changes are permitted to a Classic Flight Reward flight before departure of that flight, provided the entire booking contains only Flight Segments that are within Australia, and will incur a Change Fee (see the
Fee Schedule) per passenger:
(a) change to flight number;
(b) change to date of travel;
(c) change to class of travel; and
(d) change to a direct or indirect Segment routing without a Stopover (provided the origin and destination cities remain unchanged) or airline.
14.7.6 Subject to this clause 14.7, the following changes are permitted to a Classic Flight Reward flight before departure of that flight, provided the booking contains one or more Flight Segments that are not within Australia, and the Flight Segment(s) being changed do not include a partner airline that requires a ticket to be reissued for the change. Any such change will incur a Change Fee (see the
Fee Schedule) per passenger:
(a) change to flight number; and
(b) change to date of travel.
14.7.7 Any change made to a Classic Flight Reward after ticketing will incur a Change Fee (see the
Fee Schedule) per passenger. No changes requiring ticket reissue will be allowed to any Classic Flight Reward within 24 hours before departure from the point of origin of the first Flight Segment on the Itinerary.
14.7.8 The following changes are not permitted to any Classic Flight Reward within 24 hours before departure from the point of origin of the first Flight Segment on the Itinerary:
(a) change to class of travel;
(b) change to any Segment routing or airline; and
(c) change to name (only for Flights with a Qantas (QF) flight number on the ticket that are operated by Qantas).
14.7.9 No changes will be permitted on the Qantas website to any Classic Flight Reward within 24 hours before departure of each Flight Segment on the Itinerary.
14.7.10 Changes to Classic Flight Rewards that incur Point fees (see the
Fee Schedule) can be made only by the Member who originally redeemed Qantas Points for the Classic Flight Rewards and only if that Member has sufficient Qantas Points to cover the applicable fees.
14.7.11 Any change made by telephone or in person to a Classic Flight Reward booking will incur a Service Fee per passenger occupying a seat (see
Fee Schedule) in addition to any applicable Change Fee.
14.8 Combined Classic Flight Reward Bookings - changes to tickets
14.8.1 The most restrictive Fare Rules of any Segment of a Combined Classic Flight Reward Booking apply to any changes made to the Classic Flight Reward Segment(s) of that Combined Classic Flight Reward Booking. Any additional payments associated with changes to any Classic Flight Reward Segment(s) of such bookings (other than for refunds) must be paid with money, as specified in the Fare Rules of the applicable most restrictive Segment.