Open a reservation with the More Options tab, and look for Business Class & Higher Fares with Restrictions, sort by Fare; the lowest fares will generally be YUP fares (as you look in the detailed fare rules click option before you buy.) They will actually look like YRUP26NR, YRUP7ZNNR or similar wordings, depending on what kind of YUP fare it is. It books into First (or Business on three-class flights) and is a domestic fare.
Originally Posted by KSinNYC
Hello, I always wondered what YUP fares were, so I searched aa.com for the term you suggested. I got back 27 results, none of which were relevant. Would you be kind enough to post a link with information about these fares?
I also looked at the reservations section and didn't see anything called "discounted," just "with restrictions" and "without restrictions."

(thanks!)
saimike, there is no such thing as an international YUP fare - but there IS an "I" class fare, for instance, that is essentially a discounted business class fare.
Originally Posted by saimike
this is a little OT, but i'm curious if YUP fares work for intl flt like ORD-NRT? i'd assume that if it works for intl, this would be Y to J.