For several months now, Cebu Pacific Air (CEB) has not been flying between Manila and Calbayog. I do not know why this happened, only that they cancelled all of their flights. Their website still showed the route, and Calbayog continued to be included in their promotional offers, even though no flight dates were available. Now that appears to be changing.
According to the current CEB Domestic Flight Schedule, they will renew service beginning on June 10, 2011. (see picture below)