2. Infant air ticket regulations: 0-2 years old, subject to the departure date; For domestic air tickets, baby tickets are purchased at 10% of the full adult fare of the same flight, airport construction fees are exempted, and seats are not provided. If you need to occupy a seat alone, you must buy a child ticket; When each adult passenger carries more than one baby, more than one person must buy a child ticket; Generally, the international baby fare is 10% of the full adult fare, and infants of individual airlines can use 10% of the adult discount price. No seats, free of airport construction fees. Other taxes are subject to airline regulations.