The cheapest Rome to Sydney return flight on the radar right now is €780, flying with Air China via one or more connections. It covers departures in November 2026, and every dated link below opens that exact FCO–SYD search on Skyscanner. That is roughly 20% below the €979 this route usually costs. Across 83 recorded checks it has ranged between €677 and €1,479. Our sampling points to November 2026 as the cheapest month to fly Rome to Sydney.
Prices are re-checked against Skyscanner automatically, and every one shows when it was last confirmed, so nothing here is older than it looks. Not flying from Rome? We track 56 other departure cities for Sydney, listed at the foot of this page.
Prices like this tend to vanish fast. If it has gone when you look, try the days either side of the dates above, since Rome to Sydney is often still worth booking within a day or two of the fare we found.