Delta Airlines infant travel policy allows infants under the age of 2 to fly for free on a parent or guardian's lap. However, if parents prefer, they can purchase a seat for the infant and use an FAA-approved child safety seat. Infants must travel with a ticketed adult, and each adult can travel with only one lap infant. The airline offers bassinets on international flights, but these must be requested in advance. Additional baggage allowances for infants include one checked stroller and car seat at no extra charge.