Airline Booking Codes
The class of service used is indicated in a reservation or on an airline ticket as a booking code.
There is no standard among airlines with regard to these, and each airline sets their own. Historically, some codes were class-specific, notably F and P for First Class, J and C for Business, and Y and M for Economy. However, with the proliferation of new fare types in contrast to the limit choice previously, airlines now use several codes for...
