Please be aware that Taipei has multiple airports and that these results are for all airports serving the city.
The best month to fly between Taipei and Manila is June and the most expensive month to fly is April. (Average prices, based on 2813 datapoints.)
The best day to arrive at Taipei is Saturday and it would be best to avoid Friday, as prices are on average 46.19% higher than on Saturday. (Average prices, based on 607 datapoints.)
The cheapest airline flying from Taipei to Manila is Philippines AirAsia. They are 62% cheaper than EVA Air. (Average prices, based on 2823 datapoints.)
The best time to fly is at around 1. (Average prices, based on 3365 datapoints.)