There are two ways to use your KrisFlyer miles to upgrade a regular commercial (cash) ticket, the first is on a Singapore Airlines or SilkAir flight and the second is on a Star Alliance member airline operated flight.
There are two ways to use your KrisFlyer miles to upgrade a regular commercial (cash) ticket, the first is on a Singapore Airlines or SilkAir flight and the second is on a Star Alliance member airline operated flight.