The cheapest Rome to Osaka return flight on the radar right now is €599, flying with Air China via one or more connections. It covers departures in January 2027, and every dated link below opens that exact FCO–KIX search on Skyscanner. That is roughly 16% below the €716 this route usually costs. Across 64 recorded checks it has ranged between €599 and €999. Our sampling points to January 2027 as the cheapest month to fly Rome to Osaka.
Every fare here is re-confirmed against Skyscanner automatically, and each one is stamped with the moment it was last checked, so you can see how fresh it is instead of taking it on trust. Not flying from Rome? We track 60 other departure cities for Osaka, listed at the foot of this page.
Fares move quickly. If this Rome to Osaka price has gone by the time you search, shift the dates a day or two either side, because the same route is often still cheap just next door.