What changes above about 150 passengers
Below roughly 150 passengers, group charter is largely an aircraft-sourcing exercise. Above it, the movement becomes a logistics exercise in which the aircraft is only one component. Airport capability, ground handling throughput, border processing capacity, baggage handling and transport at both ends all become live constraints.
The aircraft options are a larger narrowbody such as an A321, a widebody such as an A330, 767 or 777 at 250 to 400 seats, or several aircraft flown as a coordinated wave. The decision usually turns on two questions: can the airports at both ends handle the aircraft, and does the entire group genuinely have to arrive on the same airframe?
That second question deserves honest examination. Many large movements are better run as two or three coordinated aircraft, the group can be split by function, arrivals can be sequenced to match ground transport capacity, and constrained airports become usable. The cost of a single very large aircraft is not always the lower number once ground handling and transport surges are priced.
