Reservation Booking Designator (RBD)

Reservation Booking Designator (RBD) Airfares are composed of fare and rule components that define the product, services, and pricing. These components include the origin/destination pair, fare class, one-way/round-trip indicator, fare amount, validity dates, mileage, and other specific rules. To manage and sell airfares, airlines use inventory allocations within finite, alphabetically-defined sub-groups known as "inventory buckets," each associated with specific fare codes. This method of defining and managing airfares through fare codes has been in use since the early days of commercial air travel, even before computerised reservation systems were introduced. With the advent of computerised systems in the 1960s, this approach was further refined and became widely adopted across the industry. The booking class of a flight, such as F, D, J, I, Y, or M, is determined by its Reservation Booking Designator (RBD). The RBD code is used during the reservation process to identify th...