So for a couple days, the game has been very noisy about seat oversupply on my flight to Cebu, and I keep checking the demand, but it's enough for an A320 flight. Well, turns out, I checked only the outbound, which has ~170 demand, while the return only has demand for ~50 in route planning. How is it that the return flight has so much less demand?
You can block a number of seats on the flight route, but I don't recall seeing that option for just one way...
If this is from Hong Kong, it is an ongoing bug affecting this route. You can only schedule capacity to match the Cebu to Hong Kong capacity.
I saw a few routes from Korea that had the same problem indeed
The reason I'm not playing in Asia until we have city-based demand.