A "dummy ticket," which is a verifiable flight reservation used primarily for visa applications, typically has a validity period of 24 to 72 hours. This duration is determined by the airline’s "auto-cancellation" policy for unpaid bookings. When a travel agency or specialized service creates a dummy ticket for you, they are essentially placing a "hold" on a seat without completing the payment. While most standard holds are short-lived, some premium services can extend this validity to 7 or even 14 days for an additional fee, using specific airline booking systems that allow for longer reservation windows. It is critical for visa applicants to ensure that the ticket is "live" and verifiable via the airline’s website using the PNR (Passenger Name Record) on the day they submit their application to the embassy. If the embassy officer checks the PNR and finds it has already expired, the application could be delayed or rejected. Therefore, the best practice is to order your dummy ticket as close to your appointment date as possible to ensure it remains active during the crucial verification phase.