Yes, a 16-year-old can travel alone on a Ryanair flight, but the airline’s policy is more restrictive than many other carriers. Ryanair does not allow anyone under the age of 16 to travel unless they are accompanied by an adult (16 or older). Therefore, once a person turns 16, they are considered an "adult" in Ryanair's eyes for ticketing and travel purposes. This means they do not need any special "Unaccompanied Minor" (UMNR) service, as Ryanair does not offer a UM service or any special assistance for solo young travelers. In 2026, it is important to remember that while the airline allows it, some countries may have specific entry/exit requirements for minors. For example, a 16-year-old traveling from France or Spain may still require a signed "Parental Consent" form to clear national border control. Always ensure the young traveler has a valid passport and all necessary visas, as Ryanair will not provide extra supervision at the airport or during the flight.