Most passengers are familiar with scheduled flights and chartered flights. In Iran, there is a difference in the way these terms are used. In Iran, the term ‘system ticket’ refers to the regularly scheduled flight ticket sold by agencies. These tickets are fully refundable according to the cancellation policies of each airline and the selling agency. A Chartered ticket, on the other hand, is usually non-refundable. The advantage of chartered tickets is their price which is always cheaper than system tickets.