Can minors fly without their parents or guardians? Absolutely! Particularly when the traveler is a child, United Airlines makes sure the experience is secure and comfortable. According to United Airlines Minor Policy, kids between the ages of 5 and 14 who are travelling alone, as well as kids between the ages of 15 and 17, must choose the unaccompanied minor service, which includes extra snacks offered on the flight and priority boarding so they have more time to settle in.