Finding your bags in the airport.
If you arrive at Antalya airport from an international location with a transit stop in Istanbul you will have to pick up your bags from the international terminal.
This require you leaving the domestic terminal and walking "300 meter left" to the international one to pick up your bags.
They will be right there waiting for you inside by the the baggage area.
It may be best to take a taxi and have it him wait for you as you pick up your bags especially if you have carry ons and children with you.