Airline boarding is the process by which passengers enter an aircraft before a flight. It typically begins after the aircraft has arrived at the gate and the boarding area is prepared. Airlines often use a boarding process that groups passengers by ticket class, frequent flyer status, or seat location to streamline the flow of people onto the plane. During boarding, passengers present their boarding passes and identification to airline staff. Once on board, they find their assigned seats, stow their carry-on luggage in the overhead bins or under the seat, and prepare for takeoff. This process is crucial for ensuring that flights depart on time and safely.