I am having the same issue with a flight of mine too. OPA001 & OPA002 Singapore to Bangkok once a week return. Now I do understand that since this is only a once week service i can expect low load factors, but ZERO?
I have marketing for the route, good slots and a modern jet 767-200 on the route. As you can imagine flying the route with zero pax is very exspensive. I could cancel the route, but i want to keep these slots for when i add capacity.
Could you look into this please sami and give me an explanation?