Double AAdvantage miles every time you fly on SriLankan Airlines between May 15, 2014, and July 1, 2014. Simply register before you travel using promotion code ULDBL. Use this promotion code for great discout with American Airlines. Discount offer ends 01 July 2014. Travel with current discount coupon must take place between 01 June 2014 and 01 July 2014.