Originally Posted by
zen100
Does anyone know if this functionality is available in ExpertFlyer.
Yes it is. You need a premium subscription but it will allow you to search for reward availability in different fare classes (so Z for First or U for Club World) on specific flight numbers and on specific dates. If there is no availability on your chosen date right now you can set up an alert to email you when (and if) it is released sometime in the future.
A premium subscription is $9.99 per month or $99.99 for 12 months