What does the term 'Non-Rev' refer to in aviation?

The term 'Non-Rev' in aviation specifically refers to a passenger who is either an airline employee or a dependent of an airline employee. This classification allows these individuals to travel on a space-available basis, usually at significantly reduced rates or even for free. Non-revenue travel is a benefit offered by airlines to their staff and their families, enabling them to fly without the obligation of purchasing a ticket at full price.

The concept is integral to airline operations and employee benefits, as it recognizes the unique status of airline employees within the travel ecosystem. Understanding this term is crucial for anyone learning about airline practices, as it highlights the different categories of passengers and their associated privileges. Other options do not accurately define 'Non-Rev' since they refer to different types of passengers without the specific context of airline employees or their relatives.