Originally Posted by
hi55us
I bought a W fare right out of the gate, no upgrade afterwords, W fare. Reading through the website it sounds like I can SDC into any flight with space in C+, which is great, just want to make sure I'm interpreting this correctly.
I tried to do this, but it turns out that the underlying fare class (e.g., X, V, K, etc.) determines whether you can SDC into another flight. So, if I bought a W fare out of the gate and the underlying fare class is X, the fact that X doesn't exist means that I can't SDC onto an earlier (or later) flight. Two people at the DM desk made this clear o me. If the rules have changed, please let us know, OP!