Delta Airlines offers a comprehensive infant policy designed to accommodate families traveling with young children. Under Delta Airlines' infant policy, infants under the age of two years can travel on the lap of an accompanying adult at no additional charge on domestic flights. For international flights, a lap infant fee applies, which is typically a percentage of the adult fare plus applicable taxes. Families also have the option to purchase a separate seat for their infant, allowing the use of an FAA-approved child safety seat for added safety and comfort during the flight. The policy permits one lap infant per adult passenger, and travelers are encouraged to notify Delta of their intention to travel with an infant during the booking process.