What is the term used for the process where a passenger is checked-in to their final destination?

The term "Through-Check" refers to the procedure in which a passenger is checked in for their entire journey, including all segments ending at their final destination, especially when that destination involves connections through different flights or airlines. This process streamlines the travel experience, as the passenger does not need to collect their luggage and check in again for connecting flights. The bags are automatically transferred to the final destination, ensuring a more efficient and convenient travel experience for the passenger.

In contrast, other options describe different aspects of air travel but do not encapsulate the idea of a single check-in process for an entire itinerary. "Immediate Connecting" may relate to transfer times but doesn't refer specifically to the check-in process. "Layover" describes a stop between flights but does not apply to the check-in procedure itself. "Non-Restricted Entry" refers to immigration or border control policies and is unrelated to the check-in process. Thus, "Through-Check" is the most accurate term for the described process.