Please be aware that Osaka has multiple airports and that these results are only for International airport.
The best month to arrive at Osaka is October and the most expensive month to fly is November. (Average prices, based on 1052 datapoints.)
The best day to arrive at Osaka is Wednesday and it would be best to avoid Thursday, as prices are on average 58.28% higher than on Wednesday. (Average prices, based on 506 datapoints.)
The cheapest airline flying to Osaka is All Nippon Airways. They are 27% cheaper than ANA Wings. (Average prices, based on 1093 datapoints.)
At Osaka the most flights depart around 08:00. (Hourly flights, based on 1160 datapoints.)
From Osaka it is on average the cheapest to fly to Tokyo and to Tokyo. (Average prices, based on 907 datapoints.)