Wilson made his debut for Nicaragua in a May 2001 UNCAF Nations Cup match against El Salvador and has, as of December 2013, earned a total of 29 caps, scoring 4 goals. He has represented his country in 6 FIFA World Cup qualification matches and played at the 2001, 2007, 2009, 2011 and 2013 UNCAF Nations Cups as well as at the 2009 CONCACAF Gold Cup.