I have been "out of status" for three years and want to leave the country. Will I face any troubles clearing customs at the airport bcs of this.??

Hi. I entered the country legally back in 2008 and did a change of status to F-1 student visa. I was unable to maintain my full-time student status and have been unlawfully present in Florida for about three years now. I would like to return to my home country voluntarily and was wondering what would happen once I get to customs and border control at the airport. Will I be detained and placed in removal proceedings even though I am leaving voluntarily?? Should I arrive at ICE with my bags packed and say "here I am.. now please deport me.." ..might get a free flight that way, but that''s really not the point. Any advise would be greatly appreciated. Thx