If your baggage is not "checked through" to your final destination during a connecting flight, it means you are responsible for the manual transfer of your luggage at the layover airport. This typically happens when you book separate tickets on different airlines or if you are connecting from an international flight to a domestic one in countries like the USA or Australia. Upon landing at your connection hub, you must proceed to the baggage claim area, retrieve your suitcases from the carousel, and clear customs with them. Afterward, you must take your bags to the check-in counter for your next flight to re-tag and drop them off. If you fail to do this, your bags will remain at the connection airport as "unclaimed," and the airline will not automatically put them on your next plane. This process requires significantly more time, so travelers in 2026 are advised to allow at least a 3-hour layover for "self-transfer" connections.