Please be aware that Yogyakarta has multiple airports and that these results are for all airports serving the city.
The best month to fly between Yogyakarta and Padang is October and the most expensive month to fly is June. (Average prices, based on 1004 datapoints.)
The best day to arrive at Yogyakarta is Sunday and it would be best to avoid Tuesday, as prices are on average 21.81% higher than on Sunday. (Average prices, based on 1015 datapoints.)