What is a "no-fly list"?

A "no-fly list" specifically refers to a list of individuals who are prohibited from boarding commercial aircraft due to security concerns. This list is maintained by governments and is used as a part of efforts to enhance air travel safety by preventing potentially dangerous individuals from accessing flights. Frequently, those placed on the no-fly list may be associated with terrorism or other criminal activities that pose a threat to aviation security.

In contrast, passengers on the other choices, such as those with flight benefits or frequent flyer statuses, do not have any implication regarding security risks. Therefore, understanding who is included on the no-fly list is crucial for aviation security personnel in ensuring that only safe and vetted individuals are allowed to travel by air.