While there is no specific "tooth color" regulation in 2026 airline contracts, all major carriers enforce a "Professional Appearance and Grooming Standard." This means that while a flight attendant's teeth do not need to be "Hollywood white," they must appear clean, healthy, and well-maintained. Significant discoloration, visible decay, or missing teeth that are not corrected with a bridge or implant could be flagged during the rigorous hiring process or by a supervisor as a violation of the "pleasing appearance" requirement. Airlines like United, Delta, and Emirates emphasize a "friendly and approachable smile" as a core part of the job. In 2026, many flight attendant training programs actually include modules on personal hygiene and dental care to ensure that the staff presents a polished image that aligns with the airline's brand and the high-end expectations of international travelers.