Children from 5 to 16 years old can travel on board UIA flights escorted by adult persons aged 18 or over. Children may travel on board UIA flights without an adult escort provided they are booked using our Unaccompanied Minors (UM) Service for an additional fee. The UM Service (for children 5-14 years on domestic flights, and 5-16 years on international flights) must be booked in advance via UIA Customer Support Center. Detailed information about children travelling with UIA can be found on this page. Please note that online booking for unaccompanied children is not available on flyUIA.com.