Any experts out there who can offer some advice about best routing availability between MNL and MIA during the summer?

I am struggling to find seats available for this summer. Looked through MNL-NRT-MIA; MNL-HKG-JFK-MIA... it is spotty. Awards seats show available on Cathy Pacific, but American does not have space left on most, and I do not have a bank of CP miles.

Appreciate the help, thanks.