4.2.1.    Tickets are valid for a period of one year from the date of the first Flight covered in the Ticket. The same rule applies to Tickets subject to changes. Please refer to 4.3. Open-Ended Ticket for information on the validity of Tickets reissued as open-ended tickets.
4.2.2.   No transactions will be allowed on an expired Ticket and these Tickets cannot be further changed or cancelled or refunded except as provided in this Paragraph. Passengers will lose all their rights and claims for expired Tickets except for their right to claim the refund of Airport Taxes for unflown Flights.
4.2.3.    Whenever the Ticket is purchased in a single transaction as part of codeshare or interline flights where Pegasus participates, all flights covered in the Ticket must be flown in the order shown in the Ticket. If the Passengers fail to take a flight indicated on their Ticket, they will lose all their rights and claims for the remaining flights shown on the Ticket.
4.2.4.    For Scheduled Flights subject to a Ticket, no changes or cancellations can be made after the departure of the flight. See 5. Ticket Change and Cancellation Rules for details.