Originally Posted by STelite

I was on CZ 383 CAN-DXB premium economy class ticket on 6/24, flight operated by B777-200ER. Flight wasn't full and before departure there was an announcement that if any passengers wanted to upgrade they could approach and FA and pay a fee.

They did not say what the amount was but is this common practice on flights that have empty seats? Or is this just FA's making extra money on the side because how much could they have offered for someone to upgrade, I doubt anyone would have more than US$200-US$300 cash on them so it couldn't be more than that, or could it? If the amount was low wouldn't it just make sense for the seats to remain empty?