He won the gold medal with Thailand at the 2007 Southeast Asian Games.thaifootball.com: Kader der U-23 2007 He also played in the 2009 Southeast Asian Games. He also took part in the 2007 Summer Universiade, hosted in Thailand and won bronze.thaifootball.com: Kader mit Bild In October 2011, Sompong scored in a match against Oman in the third round of 2014 FIFA World Cup qualification.http://www.krobkruakao.com/ข่าว/44038/ทีมชาติไทย-ชนะ-โอมาน-3-0.html He also played in two AFF Cups in 2012 and 2014.
