Usually infants must be at least two weeks old before they can travel although some airlines allow seven-day old infants on board. The booking policy differs from one airline to another, so it is important to check directly with the airlines. . But three to seven months is a great window .

Technically, you can take a 2-week-old baby abroad in 2026, as most airlines allow infants to fly once they are at least 7 to 14 days old. However, there are significant logistical and health hurdles. First, the baby must have their own passport, and obtaining one for a newborn within two weeks requires a "life-or-death" or urgent travel appointment at a passport agency, which can be difficult to secure. Medically, 2026 pediatricians often advise against international travel until a baby is at least 2 to 3 months old, as their immune systems are still developing and they have not yet received their first round of major vaccinations. Furthermore, the mother’s health must be considered; traveling so soon after birth (especially if via C-section) carries risks like blood clots or infection. If you must travel, you should obtain a "fit to fly" letter from your pediatrician and ensure your destination has high-quality neonatal care available, as travel insurance for newborns can be complex in 2026.