What unethical practice does Back-to-Back Ticketing involve?

Back-to-Back Ticketing is considered an unethical practice primarily because it involves the purchase of two round-trip discount tickets to create a scenario where a traveler essentially has an extra segment of travel without paying the full fare. By booking two round-trip tickets that are structured to overlap, a traveler can exploit airline pricing rules, effectively bypassing a more expensive fare for a segment that they do not actually intend to use. This manipulation of ticketing rules can lead to revenue loss for airlines and is frowned upon in the industry.

While other options might touch on unethical behaviors, they do not represent the specific intent and mechanism of Back-to-Back Ticketing. This practice exemplifies the nuances of fare manipulation and the ethical expectations that are inherent in responsible travel agency operations. It emphasizes the importance of adhering to airline rules and maintaining integrity in bookings to shield oneself and clients from potential repercussions.