Folks,

I used to commute SIN-KL bi-weekly and I honestly don't think you wanna waste yr time doing it as a day trip. I absolutely agree with miles4all that its a terrible route. Back then, I prefered driving than flying and in most times, it takes me less time to drive then fly. Most times, I do it <4hrs and once in 3h15m and that's door-to-door!