Career
Andonov"s first club was Botev Plovdiv. With Botev he has played 112 games and scored 12 goals. In 2006, Cherno More Varna signed Andonov to a four-year deal for a €100,000.
During a 2008-2009 season, after a few poor performances along with the impressive form of Miroslav Manolov and Yordan Yurukov, Andonov found regular starting positions in attack hard to find.
In January 2009, he was loaned in his previously club Botev to the end of the season. On 3 July 2009, Andonov signed contract with Stara Zagora.
On May 2010 Andonov signed a two-year deal with Chernomorets Burgas. In February 2012, Andonov was released from his contract and returned to Stara Zagora as a free agent.
He scored a hat-trick in the opening game of the 2012-2013 season against Botev Vratsa on 11 August.