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 Pekanbaru is August and the most expensive month to fly is December. (Average prices, based on 3101 datapoints.)
The best day to arrive at Yogyakarta is Tuesday and it would be best to avoid Monday, as prices are on average 7.76% higher than on Tuesday. (Average prices, based on 1417 datapoints.)