I was sure that I had read that the Chase card upgrades on award tickets applied to United and Copa flights. I learned yesterday that they do not apply to Copa flights. My award flight yesterday on Copa MDE-PTY-SJO had a one class Embraer 190 (The first I've ever seen on Copa) for the MDE-PTY portion, but the 737 on PTY-SJO had plenty of open seats in the front cabin. The agent in MDE had already told me that award tickets were not eligible for UGs, but I thought she was just confused. Upon arriving home last night, I checked the web site, and it says that it is good on United flights only. I'm not sure if they changed the verbiage, or if I was simply mistaken. Copa has no CC option, so I'm not sure why they, as a MileagePlus airline, do not offer the same benefit as UA with regard to the card UGs. Whatever the reason, if you are planning award travel on Copa, don't plan on receiving a CPU. My flights were shorties, but from BOS, EWR, ORD, LAS or LAX to PTY and perhaps beyond, it could be a major factor on how I book, so I thought I'd share it here.