How old do you have to be to go on the plane by your self?

The minimum age for a child to fly alone varies by airline, but most major airlines allow children aged 5 and older to travel unaccompanied. Some airlines may have specific rules for children aged 5 to 11, often providing an unaccompanied minor service for added assistance. For children under 5, they typically must be accompanied by an adult. It's important to check the specific policies of the airline you plan to use.