 The airport had then been used by many passengers (somewhat due to Malaysia Airlines serving the city and still being based in Subang).Once the North-South Expressway opened, many people opted to use other methods rather than the often more expensive air travel; as a consequence of the lack of demand, Malaysia Airlines and later AirAsia withdrew their services.Following the introduction of electric trains having a direct link to Kuala Lumpur city centre, Malaysia Airports were forced to reconsider the financial viability of the site.