Originally Posted by Miggles

There is usually an A fare to be had for only $50 more than YUP, so that's the way for non-elites to go. In addition, the A fare is better in the cases of missed connections, delays, and involuntary reroutes because CO is obligated to give you an F seat on a later CO flight or on another carrier. YUP only entitles one to a Y seat in such cases.