Flight Loads.
 

Anybody have the link to the site where I can check capacity in the different classes of a flight?

You know, where I can get all that R0 Y0 C0 F0 XF0 type information.

I'm trying to figure out the chances of me getting an upgrade.

Thanks!

You can see this inventory when you book award travel on ual.com. Keep in mind that the website does not always display all available inventory or itineraries.

You must have your "Display Preferences" set to Expert in your Mileage Plus profile.

Even in expert mode, since you can only book free award seats, if that inventory is sold out, you won't see the upgrade inventory buckets.

I don't know if this is what you're looking for but log into your Mileage Plus account then go to "Shop for Flights" and key in your specific destination and dates. Make sure that you are sorting the results by schedule and the inventory for the flights should be available in the results. I tried this method when there were no award tickets available for my specific destination and dates. It seems the key thing is that you have to log in so that the system knows that you are in "Expert" mode.

Does this show the upgrade inventory?

Thanks.
 

Thanks everyone.
That "Expert Mode" trick did it.