To claim missing Miles&Smiles miles on Turkish Airlines, you can use their official website or mobile app, but you must wait at least two weeks after your flight has been completed. To begin, log in to your account, navigate to the "Miles Transactions" section under your profile, and select "Claim Missing Miles." You will need to provide specific flight details, including the flight date, number, departure and arrival locations, travel class, and your 13-digit ticket number. It is crucial that the name on your ticket matches the name on your Miles&Smiles membership exactly. Requests are generally accepted for flights taken within the last 12 months. If the flight was operated by a Star Alliance partner, the process is similar, though the timeframe for credit reflection may vary. Always keep your physical boarding pass or e-ticket until the miles appear in your dashboard, as these documents are the primary evidence required for manual verification.