[QUOTE=AAntares]Isn't the the purpose of a YUP? The OP doesn't say what Fare classes he sees (perhaps because he doesn't know where to look). Most of the time a "restricted first" ticket really is a YUP, and as somebody else said, there's no advantage to full fare over a YUP if you know the dates won't change.

Of course, if you search for a flight with no A or P inventory, the system will fall back to full fare F, which could also be the issue.

Unfortunately, without some more info from the OP, we'll never know.

Correct, AAntares, I don't know what YUP is or its purpose and I also don't know how to check for the diff fare classes. I simply plug in aa.com where I want to go and the dates, etc. and click on the appropriate radio button "economy w/ restrictions", "business full fare", or "first full fare"- you get the point.

I've seen the YUP term bandied about but I don't know what it means- checked glossary and FAQ- and did not see it there. Enlighten me on all these points, if you will. Thanks.