Varley was called into Ireland's training squad for the 2013 Six Nations Championship on 21 January 2013. He came on as a replacement during Ireland Wolfhounds friendly with England Saxons on 25 January 2013. Varley was named in the Ireland squad for their 2014 Tour to Argentina on 19 May 2014. He came off the bench in the first test against Argentina on 7 June 2014.