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 Tarakan is February and the most expensive month to fly is July. (Average prices, based on 348 datapoints.)
The best day to arrive at Yogyakarta is Wednesday and it would be best to avoid Thursday, as prices are on average 30.91% higher than on Wednesday. (Average prices, based on 347 datapoints.)