I am trying to make a booking to travel from LHR to NYC in November in UCS for me and the Mrs. Basically i held the flights I wanted but missed the deadline and now the return flight has gone. There are others on that day but I really wanted the late flight which was on hold. What are the chances it will come back on any time soon. (VS10 on NOV 13th)
It is really an impossible question to answer accurately. It will all depend on if revenue management decides to release anymore, and that could be done anytime between now and right up until the day before the flight
If you really want to fly UC on that specific date, and there are seats available on another flight, I would personally book them, otherwise you run the risk of them going also and you been left with having to pay cash or fly a lower cabin.