src/de/steamwar/lobby/listener/PlayerConnectionListener.java

@@ -58,6 +58,8 @@ public class PlayerConnectionListener implements Listener {
 
     @EventHandler
     public void handlePlayerKick(PlayerKickEvent event) {
+        if (LobbyPlayer.getLobbyPlayer(event.getPlayer()).isFly())
+            event.setCancelled(true);
         if(event.getReason().equals("Flying is not enabled on this server") && event.getPlayer().getVehicle() instanceof EnderPearl)
             event.setCancelled(true);
     }