No, you cannot book a flight for an unborn baby in 2026 because airlines require a legal name and date of birth to issue a ticket or add an infant-on-lap to a reservation. Additionally, many international security protocols require the baby to have a valid passport or birth certificate, which cannot be obtained until after birth. The standard procedure is to book the adult's ticket first. Once the baby is born, you simply call the airline or use the "Manage Booking" tool to add the infant to your itinerary. For "Infant on Lap" travel, you will typically pay a small fee (often 10% of the adult fare plus taxes). If you wish for the baby to have their own seat, you will need to book a separate child fare. In 2026, airlines are very accustomed to this process, and as long as there is an adult on the booking, adding a newborn is a routine task. Just be sure to check the airline's minimum age policy, as some carriers require the baby to be at least 7 to 14 days old before they are allowed to fly for health and safety reasons.