I am looking to buy a reserve cert but without having it my account how can I check if there is availability for companion redemptionon the flight that I want?
For the Reserve companion certificate, tickets are only available in I and Z classes of service for First Class travel, and only available in L, U, T, X, and V classes of service for Main Cabin travel. For Delta Comfort+ travel, tickets are available in W and S classes of service, but only when L, U, T, X, or V classes of service are available in the Main Cabin.