Dear Dennis,
At present Panama has two international airports: Tocumen International, known as the Hub of the Americas because it is the busiest airport in the region, and the David Airport (Enrique Malek) which is mostly domestic but added the word international when it began receiving flights from Costa Rica. A former military airport (very old) at Rio Hato on the Pacific Coast, about 1.5 hours drive west of Panama City, is currently being rebuilt and when completed the government says it will be Panama’s only true international airport outside of Tocumen. The exact open date and flights won’t be available till next year earliest, it is thought.
Regards!