It is written in the agreement texts accepted when purchasing tickets that airline companies have the right to make such a decision. Blacklisted passengers can be banned from the flight even if they buy a ticket. In such a case, call centers inform the related passenger by phone that their flight is canceled and the ticket price will be refunded. Those who make false bomb threats, those who say they will miss the plane during the flight, create panic, those who get drunk during the flight and disturb the cabin crew and passengers, those who cause the planes to take off and make a sudden landing, those who fight in the waiting rooms, those who say that they were misinformed about the boarding time and miss the plane, and Aggressive speakers can also be blacklisted in addition to fines. The application, which has just started in Turkey, is in effect in many countries around the world.
Source:
https://boardinginfo.com/havayollari-hangi-yolculari-kara-listeye-alresim/
