Embedded in the gobbledygook of letters and numbers on your airline ticket is a secret letter code that lets airline personnel know what kind of passenger you are and what you paid for your ticket. They can use these to quickly determine whether you should be the first or the last to get bumped, and whether you can get a seat upgrade. Here’s a quick guide to deciphering what the letter abbreviations on your airline ticket mean. Find out why “Y” gets the perks and “Q” gets the shaft.
Airline Tickets, Booking Class & Abbreviation [Airticket-us]