In 2026, the ideal age to become a flight attendant is typically between 21 and 35, though the legal minimum is 18 for some regional carriers. Most major airlines (like Delta, United, or Emirates) require you to be at least 21 to ensure you can legally serve alcohol on international routes. Starting in your early 20s allows you to build seniority—the "holy grail" of the industry—which dictates your schedule and choice of layovers. However, many airlines now actively recruit "second-career" professionals in their 40s or 50s because they bring valuable life experience and de-escalation skills. There is no upper age limit as long as you can pass the rigorous physical exams and safety training. The "best" age is whenever you have at least 1–2 years of customer service experience and the lifestyle flexibility to handle on-call "reserve" shifts and frequent time zone changes.