My friend in United told me that US airway sell its miles very cheap recently. And since it definitely will leave *A, US Airway abused its contract in *A. United changed its policy to release its savor award space within one week, for some hot routes, even within three days. If people cannot redeem these cheap dividend miles, it will became the burden of One world after the merger.
This is another explanation of few availability of saver award.
This is another explanation of few availability of saver award.