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 Batam is October and the most expensive month to fly is June. (Average prices, based on 8884 datapoints.)
The best day to arrive at Yogyakarta is Tuesday and it would be best to avoid Monday, as prices are on average 10.53% higher than on Tuesday. (Average prices, based on 8474 datapoints.)