Panama City has 2 airports: The larger Tocumen Airport and the Albrook "Marcos A. Gelabert" International Airport. If you've just arrived in Panama and you want to continue straight to the Chiriqui province, you'll most likely fly to David from Tocumen airport. If you have booked an international long-haul flight from Panama, we recommend flying directly to Tocumen Airport with Copa Airlines. This avoids a ride through the city from Albrook.
Here are the Flight Schedules from Panama City (PTY, PAC) to David (DAV).
Here are the Flight Schedules from David (DAV) to Panama City (PTY, PAC).