The airline grew rapidly in the next few years, boosted by rising demand for air travel during the post-war period, where flying was no longer a privilege for the very rich. By 12 April 1960, the airline was operating Douglas DC-3s, Lockheed L-1049 Super Constellations and Vickers Viscounts on new routes from Singapore to Hong Kong and from Kuala Lumpur to Bangkok via Penang. Flights were also introduced from Singapore to cities in the Borneo Territories including Brunei, Jesselton (now Kota Kinabalu), Kuching, Sandakan and Sibu.