In 2026, the age at which a minor can travel alone without airline-provided supervision depends strictly on the carrier, but 12 to 15 years old is the most common threshold for "independent" travel. For children aged 5 to 11, most airlines (such as Delta, United, and Emirates) mandate an Unaccompanied Minor (UM) service, which includes a fee and staff escorts. Once a passenger reaches age 12 or 15 (depending on the airline), this service usually becomes optional, meaning they can navigate the airport alone. However, some international carriers and low-cost airlines (like Ryanair) require passengers to be at least 16 to travel without an adult. Always check the specific airline's policy, as "Young Traveler" rules vary significantly across global regions.