"The FAA states that an applicant for a student-pilot certificate must be at least 14 years old for the operation of a glider or balloon and 16 years old for other categories of aircraft. Many of us have heard of teenagers who soloed an airplane on their 16th birthday. These teenagers probably started flying years before they were eligible for a student-pilot certificate.
These guidelines are set for member states by the International Civil Aviation Organization (ICAO), although the standards may be tightened, or relaxed, from state to state. The United States is an example. For American airlines, the US Federal Aviation Administration (FAA) imposes a minimum age of 21 years and 1,500 flight hours for commercial aircraft co-pilots. Applicants for an air/airline transport pilot certificate must be at least 23 years of age and undergo an additional forty hours’ training.
All airline pilots, regardless of age, will go through the same training and be held to the same training standards, whether they’re 18 or 48.
Source:
https://www.pilotcareernews.com/whats-the-minimum-age-for-a-commercial-airline-pilot/
