Phew! I've finally booked the final leg of my OWA for next year:
SYD-DXB QF F Stop 1
DXB-DOH QR F
DOH-BCN QR J Stop 2
MAD-LHR BA J
LHR-HAM BA J Stop 3
CPH-LHR BA J Stop 4
(LHR-DUB BA Y separate $ ticket Stop)
DUB-LHR BA J
LHR-BOS BA F Stop 5
BOS-JFK AA F Stop < 24 hours
JFK-LAX AA F (on their A321 TransCon service) Stop < 24 hours
LAX-SYD QF F
Total taxes were about $950, despite having all those London stops. Weirdly, after booking the first ~8 sectors QF rang me and said I would be getting $786 back as the taxes had changed
I had to chase Qantas almost every time I added a flight to get the new eticket issued after each change. It kept getting stuck in their system and, as far as I could tell, I would not have been able to make future changes without the updated and issued eticket. A bit frustrating - some of the customer service peeps would push it through and apologise for the delay and others would say that the etickets are processed in chronological order by departure date and that because my date was so far in the future that I'd just have to wait and that it would be issued within x days. Invariably on those occasions I'd have to call back after x days had passed and try again. But we got there in the end!
To book the the last two sectors (BOS-JFK-LAX) I called yesterday morning and both the customer service agent, Nicole, and myself were confused as the system (hers and the internet) was showing availability for the flights but they couldn't be ticketed for some reason. Nicole checked with the 'fares department' and apparently the system was showing false availability! She was great though, she said that she would be working today from 7am and that she could have a look then and call me this morning, and she did! Pretty good customer service in that regard.
Now all I have to do is wait for the date!