I am attempting to book this sequence of flights on Qantas:
and then later,
I'm unable to book this using the Qantas multi-city option on the their website. It says "The selected itinerary is not available online". I'm wondering if it's available offline.
SYD-JNB-SYD is significantly cheaper if booked as a return ticket rather than two one-way tickets. However, I want to include the JNB-CPT flight on the same ticket.
My reasoning is that if the long international flight is delayed, having one ticket means they'll automatically reschedule me on a later flight. Or maybe we could even sneak to an earlier connection if we're fast.
Will a travel agent be able to book this itinerary on a single ticket? Or is it not possible to add an extra fight if purchased as return?