Yes, 16-year-olds can fly alone in Germany, as they are generally considered "young adults" by most airlines rather than children. In Germany, the legal requirement for a "Unaccompanied Minor" (UM) service usually only applies to children between the ages of 5 and 11 or 12. Once a teenager reaches 12, most airlines—including Lufthansa and Eurowings—allow them to travel as "unaccompanied minors" only if the parents specifically request and pay for the service, but it is not mandatory. By the age of 16, a teenager is fully permitted to check themselves in, pass through security, and board a flight independently. However, parents should still provide a notarized letter of consent (declaration of consent), especially for international travel outside the Schengen Area, to prove the child has permission to travel alone. It is also important to note that while they can fly alone, 16-year-olds may still face restrictions regarding booking hotel rooms or checking into certain accommodations upon arrival in Germany, as they are not yet of full legal age (18) under German civil law.