KUALA LUMPUR, June 11 (Reuters) - Malaysian low-cost airline AirAsia X said on Thursday it has postponed the launch of its planned service via Bahrain until at least August due to the conflict in the Middle East. AirAsia initially planned to commence the route in June, linking Kuala Lumpur to Bahrain and onward to London's Gatwick airport. It said in a statement it now expects the serviceto start in August or September, subject to market conditions.