<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Travellin_man:
If I was booked YYZ-SAN in Y and upgraded to C at time of booking, with ticket issued in business, would I be protected in coach or business?
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Assuming the "C upgrade" was with the intention of using AC certificates, i'd expect that AC has no obligation to provide you a business class seat on a UA metal flight. They would need to protect a revenue Y seat for you on an alternate route - nothing more, nothing less.
In my opinion and experiences, upgrading is a
privilege, and not a
right.