Healthcare providers in 2026 generally recommend waiting 4 to 6 weeks after a vaginal delivery and 6 to 8 weeks after a C-section before embarking on a major vacation, especially one involving air travel. This period allows the mother's body to heal and reduces the elevated risk of postpartum blood clots (DVT) associated with long-duration sitting. For the baby, many pediatricians suggest waiting until they are at least 3 months old and have received their first round of core vaccinations (for illnesses like RSV, flu, and whooping cough). Traveling with a newborn under two weeks old is highly discouraged due to their underdeveloped immune systems and the physiological stress of cabin pressure changes. A "pro-tip" for 2026 parents is to schedule a "pediatrician travel check" two weeks before departure to ensure the infant is meeting developmental milestones for safe travel.