Ryanair has a strict policy regarding minors: you must be at least 16 years old to travel alone on a Ryanair flight. Unlike many "full-service" carriers, Ryanair does not offer an Unaccompanied Minor (UM) service, nor do they provide staff assistance for teenagers. Any passenger under the age of 16 must be accompanied by an adult who is at least 16 years old and is traveling on the same flight reservation. If a minor under 16 attempts to check in alone, they will be denied boarding. This policy is consistent across their entire network. For travelers in 2026, it is vital to remember that even if a 16-year-old can fly alone, they may still need a notarized Letter of Consent from their parents to pass through international immigration depending on the departure and arrival country's local laws.