Originally Posted by ComairMan
X/N/V booking classes are not for sale. These are award based inventory types for free tickets and upgrades. X is for a business elite upgrade on domestic flights, just like a V would be for first.
Sorry, my typing wasn't clear. I know X and N class are award fares.
If you look carefully you will see several fares that are two characters. The first character is a normal fare letter like "A", "B", "C", "D", or "F". The second character in these fares is "N". The description is "Delta Deluxe". I've never seen these two character fares, and I've never heard of "Delta Deluxe" fares. What are they?