These posts show that some airlines engage in more fraud that others. The example is BA to Istanbul being unavailable for many dates 10 months in advance. From my experience, KLM awards within Europe are readily available through NW (but DTW-AMS is getting harder to get in recent months). From my experience, SR, SN flights within Europe from USAirways is harder to obtain. The airlines have all the secret statistics so don't blame me if you disagree.