The best month to fly between Manila and Dumaguete is November and the most expensive month to fly is December. (Average prices, based on 54911 datapoints.)
The best day to arrive at Manila is Monday and it would be best to avoid Thursday, as prices are on average 21.58% higher than on Monday. (Average prices, based on 15184371 datapoints.)
The best time to fly is at around 5. (Average prices, based on 61467 datapoints.)