In airline terminology, what does TKNO refer to?

TKNO stands for Ticket Number, which is a unique identifier assigned to a flight ticket. Each ticket generated by an airline has a specific number that allows for easy tracking of bookings, references during customer service interactions, and coordination between various systems within the airline, including reservations, check-in, and payment processing. Utilizing a standardized ticket number facilitates efficiency and accuracy in managing customer records and ensuring the correct handling of transactions.

The other options present interpretations or acronyms that do not align with established airline industry terminology related to ticketing processes. Therefore, the identification of TKNO as Ticket Number is essential for understanding its application in airline operations.