Making players fly when they respawn

I'm currently using this code to try and make players fly when they respawn

Code:

@EventHandler
public void playerSpawned(PlayerRespawnEvent event) {
	Player p = event.getPlayer();
	if (spectators.contains(p)) {
		p.setAllowFlight(true);
		p.setFlying(true);
		getServer().broadcastMessage("Testing flying");
	}
}

However, although the message is broadcast, the player cannot fly. This seems to be because the player has not finished respawning when the flying is enabled. At what point does the player succesfully respawn, and it become valid to call `setFlying` and `setAllowFlight`?

 

Try delaying the methods setAllowFlight() and setFlying() for some ticks by using Bukkit.getScheduler().schedule...

But I am not sure wether this solves this problem.