At 21 years old, you can apply to be a flight attendant with any airline. Minimum age requirements typically apply at the time of training completion, so candidates who will reach an airline's minimum age during training can apply for flight attendant roles. There is no upper age limit for flight attendants.

Yes, you can absolutely become a flight attendant at age 50; in fact, many airlines in 2026 actively recruit "mature" candidates for what is known as a "second career" path. Airlines like Delta, United, and Southwest highly value the life experience, de-escalation skills, and professional poise that older recruits bring to the cabin. There is no upper age limit for hiring in the United States and most of Europe, provided the candidate can pass the rigorous physical requirements and safety training. These requirements include the ability to reach overhead bins (typically a functional reach of 80–82 inches), the ability to swim a certain distance, and the physical stamina to stand for long shifts in a pressurized environment. Training for new recruits is notoriously intense—often lasting 4 to 8 weeks—but being 50 is often an advantage during the interview process, as hiring managers look for candidates who remain calm under pressure and can handle medical emergencies or difficult passengers with maturity and empathy.