How to book "-UP" fares with Delta?
I know there have been numerous questions asked on this topic, but even after reviewing them, I am stumped.
On a previous trip to LGA, I unknowingly booked a "-UP" fare through my corporate travel tool. I booked it as an economy ticket (Q), and after booking, the itinerary said something about being eligible for a free upgrade to first (which I called Delta and obtained).
My question is this: how do I see if these are available for a certain route/time? Being only a Silver, this gives me a huge advantage since I rarely get upgraded on DTW-LGA.
Thanks in advance!