Originally Posted by
Efrem
I'm not familiar with the specifics of onePass, but ExpertFlyer (
www.expertflyer.com, $10/month, $100/year, free trial if you cancel before subscribing for five days) shows the availability of award seats on most major airlines. You can search for flights with available seats in many ways.
I don't believe that ExpertFlyer has CO reward inventory, though I could be wrong.
CO does have a month-long search tool for reward inventory on their website.