What is the term for passengers who do not have a confirmed reservation but hope to be accommodated?

The term for passengers who do not have a confirmed reservation but hope to be accommodated is "Stand By PAX." This refers to individuals who are waiting for a seat on a flight, typically because they did not secure a reservation in advance. Standby travelers often include those who may have flexible travel plans or airline employees using travel benefits.

In the context of airline operations, "standby" means that these passengers are placed on a list and are only allowed to board if there are available seats after confirmed passengers have checked in and boarded. This situation can arise if there are no-show passengers or if the flight is not fully booked.

Other options like "Stand Up PAX," "Late Boarders," and "Priority Passengers" refer to different situations or categories that do not accurately describe the status of passengers without a confirmed reservation. For example, "Late Boarders" typically indicates passengers who arrive late but still have a confirmed reservation, while "Priority Passengers" generally refers to those with certain privileges, such as benefits from frequent flyer programs or premium ticketing.