I'm currently contemplating booking CGK-FCO-CGK on EK in F for approx. $7500 for July. Damn cheap.
[URL unfurl="true"]https://www.google.com/travel/flights/s/Nnw1ZZKbhZ7hAipPA[/URL]
Given that QF is ~5k just for SYD-CGK-SYD in J... it's almost a no-brainer.
