the rep I spoke with indicated that the discount can be used for all non-refundable fares and will earn 2x miles. I won't be flying on an isic booked ticket until the summer, so can't say if that's true or not. Additionally, the T&Cs state you have to present valid ISIC id at the gate, but don't know if that's real or not either. i booked my wife and I on seperate reservations because of this just incase.
not sure if these other companyblue benies also apply though
Benefits to corporations and their employees include travel vouchers for mechanical and weather delays or missed connections due to other delays. In addition to Cliqbook's existing travel reporting, CompanyBlue offers additional reporting on outstanding and redeemed credits that are completely transferable within a corporation. CompanyBlue also allows free, same-day stand-by travel, double TrueBlue points, and change and cancellation fees of only $25.