I now use www.flyaow.com (thank you BravoZulu) for this purpose. However, when I purchased a UA ticket from BWI to LAX last month the availability area showed V0 W0 S0 T0 K6 and today the flight (#295 on 6/7) shows V5 W0 S5 T3 K8! What happened here? I thought I was booking on a pretty full flight. Is this due to cancellations? Anyone?