Originally Posted by warbo
I'm afraid 'yes' is way too simple an answer. Student tickets booked in S class are bulk tickets sold at heavy discounts and are NOT upgradeable using miles. Certain certificates, usually issued to mishandled passengers or loyal travel agents, are upgradeable with any fare class. if the poster wants to use miles to upgrade from S class, the answer unfortunately is a big NO.
Although I would consider it a waste to spend 20k miles on an upgrade award for BOS-DCA, the website says
it's fine. Preferred e-upgrades are a much better idea if the OP is Gold, and this is
also ok according to the website.
warbo, maybe you're thinking of transatlantic S fares, which aren't upgradeable?