An infant younger than 2 years old (at the time of departure for each flight during the course of the journey) may travel on an adult's lap with the purchase of an infant ticket. However, if you are planning to use an infant restraint device/car seat, a child's fare ticket will need to be purchased. An infant car seat may be used for children over 2 years and it will need to occupy a normal passenger seat. It is recommended that an infant car seat be used for children weighing between 20 and 40lbs or 40 inches in height or less.
The infant must be accompanied on all flights in the same cabin by an adult who is 18 years or older. Please check the detailed fare rules while booking online, or contact your local Qatar Airways office for more information.
Learn more about the infant fare and the baggage allowance through this link