Originally Posted by
shtimseht
Help me figure this one out. Why does flt 2873 from SAN to DEN (3/20/16) show "Invalid w/ Return Date" when searching for a 1-way ticket. I've seen this on RT tickets where the outgoing segment lands too late for a return segment the same day. But why is it showing this on a 1-way ticket?

Because Southwest IT is incompetent?