Hello!
I had a question: do the non-playable airports include major international airports like Roissy, Frankfurt, New York JFK, Tokyo—basically all the world-renowned airports? When I saw the latest list of added destinations, I was quite perplexed by the number of lost holes in the list! We need to be able to send our medium- and long-haul planes to viable virtual destinations in addition to the playable airports…
The latest additions of destinations were filling up existing holes in the map as well as providing newly added airlines with suitable airports.
Obviously the destinations you mention, such as FRA, JFK, CDG etc. are available in the game.
If there are some specific airports you think should be added as destinations, feel free to suggest it (following the template) in World of Airports > Gameplay Suggestions - but check nobody else did yet, to avoid duplicity.