What is the cheapest airfare from South Carolina to Reno, Nevada?

The airports I am near include; Greenville/Spartanburg, Columbia, and Charleston, SC. Also, I can get to Charlotte, NC, Atlanta, GA, and Savannah, Ga. I need to get out to Reno, NV and want to know if there are any airlines that offer great rates. I need the cheapest way possible! Anyone know anything?