This is incorrect. YUP fares are usually booked in either A or P class. If you do a search on any of the major travel booking engines for a business class fare, it will be the lowest fare available, which will usually be anywhere from $700 to $1200 depending on destination. CO are I think the only major carrier that do not do YUP fares, they just have straight Z fares which are a discounted business class. Michael C. Berch wrote: > On most (major) airlines it's simply the unadorned Y fare, but you > have to check with the airline to make sure it applies to your > specific flight. "Y-UP" is not in common use; what usually happens is > that you book in Y, and through the reservations desk or the web site > you get a seat assignment in F. Then when you check in, you get a > real F boarding pass (which is often a different color or style, and > gets perks like a lounge, early boarding, etc.). Sometimes the > boarding pass is coded with a class like NF, FN, ZF, FZ, or F2. > Depends by airline. > >