The student/AAA/NARP/senior/veteran discounts apply to Value Fares, but not Saver Fares. For a far-advance purchase, the 15% Student Advantage discount knocks the $91 Value Fare down to $77.35, but that's still far more than the $49 Saver Fare.

If Henry's times and dates are fixed, he's best off just buying the Saver Fares ASAP. Student Advantage won't save any money, and won't be of any help in a last-minute change situation, either.