Welcome to the forum,
Well, there is suppose to be an air base on the Philippines. Out of box, the setup chart is missing an air and naval base on the Philippines among other setup mistakes (in Australia, the Major factory is suppose to be a minor and no factory can exist on an island (New Zealand))
If you are on the airbase, you can fly to sz 35, 34, 33, the island itself, and land on a carrier in sz33 as your 5th move.
If the airbase were damaged to the point of not functioning, then you could not reach.
When flying from an island, you count the island’s sea zone as your first movement point.
When attacking an island, you have to fly to the land which is at least 1 movement point even if you launch from carriers in that island’s sea zone.
Hope this helps,