On Monday 11th Nov, departing Singapore Changi, there were these commercial flights: - 41 flights to KLIA-Sepang - 14 flights to Penang - 4 flights to Ipoh - 1 flight to KL-Subang - 1 flight to Melaka Arriving: - 1 flight from Melaka - 1 flight from KL-Subang - 4 flights from Ipoh - 15 flights from Penang - 42 flights from KLIA-Sepang That's over 120 arrivals and departures that could have been by HSR. (source FlightAware) In short, the KL-SG HSR must be built.