Join Date: Nov 2018
Location: Istanbul, Turkey
Programs: TK Elite Plus,BAEC GGL,ITA Executive, AFKL Gold,QR Gold,HH Diamond,Bonvoy Gold,ALL Gold
Posts: 14,186
For those who are still stuck and have no options, Qatar Airways has significantly decreased their ticket prices for Australia - UK tickets for the upcoming days.
As far as someone in the Stuck in Australia Facebook group shared, all BA flights from Sydney are fully booked until 9 April 2020 ( I haven't personally verified this )