比较保守的办法是直接用miles 付一部分机票的钱新航有个转换“汇率”，比如机票500， 可以付300现金，剩下的200用miles付。据说长途票付miles比较划算，短途比如香港这种的不划算 http://paywithkrisflyermiles.com/how-it-works.html When you book on singaporeair.com you can choose to pay all or part of your airfare on Singapore Airlines or SilkAir with KrisFlyer miles.