Saving Philippine air power buys only weeks

How much longer could the Philippines hold if US air power were not destroyed on the ground?

Probably only a couple of additional weeks, although surviving bombers could still damage Japanese logistical areas.

Saving the aircraft from destruction on the ground would extend the Philippines campaign only modestly, perhaps by a couple of weeks. The B-17 could damage Japanese logistical areas but would not provide a decisive solution. Air power would improve local resistance and impose additional costs. It would not solve the Philippines' larger operational position.