Uninterrupted service during long-haul flights is mandatory as an emergency or simple requests can arise at any point in time. So, long- and ultra-long-haul flights can have anywhere from 8 to 14 flight attendants on board.

The number of flight attendants on a commercial aircraft is strictly regulated by aviation authorities like the FAA (Federal Aviation Administration), primarily based on passenger seating capacity rather than the number of passengers actually on board. The standard industry rule is one flight attendant for every 50 passenger seats. For example, a plane with 19 to 50 seats requires one attendant; 51 to 100 seats requires two; and 101 to 150 seats requires three. On larger wide-body aircraft used for long-haul international flights, the number is significantly higher, often reaching 10 to 16 crew members to manage multiple cabins and galley service. These requirements are centered on safety and the ability to execute a full aircraft evacuation in under 90 seconds. While airlines may choose to add "extra" attendants for enhanced premium service in First or Business Class, they cannot legally fly with fewer than the mandated minimum. In 2026, these regulations remain a non-negotiable pillar of aviation safety, ensuring that even on a nearly empty flight, the crew-to-seat ratio is maintained to handle potential emergencies such as medical incidents or cabin depressurization.