What does the term 'Non-Rev' mean in the context of air travel?

The term 'Non-Rev' refers specifically to employees of an airline and their eligible family members who are permitted to travel on flights that have available seats without having to pay the full fare. This practice allows these individuals to enjoy reduced fees or sometimes even travel for free, depending on the airline's policy. Non-revenue employee travel is a common benefit in the airline industry, enabling staff to take flights as long as there are open seats available after all paying passengers have been accommodated.

This concept is important for understanding the broader structure of airline fare classes and travel policies, as it reflects the privileges provided to airline employees as part of their benefits package, distinguishing them from regular fare-paying passengers.