Originally Posted by
flyerbjorn
I've done this to Sydney.
You can buy a regular fare and ticket the return date. Once you've flown the outbound segment, call UA and cancel the return segment. The return ticket remains valid for a year from the departure date....
....
I don't think that's quite correct, and is an important point -- I believe the validity is one year from the
ticket issuance date (although perhaps not controlling in your specific case to Australia given their visa time limits). Others please correct me if wrong?