If you’re found guilty of DUI in Oklahoma, there is a minimum jail sentence of ten days, even if it’s your first offense. A DUI is punishable by up to a year of jail time and up to $1,000 in fines. Suppose you have previous DUI convictions on your record. In that case, your case can elevate to becoming a felony DUI with a minimum one-year jail sentence and the potential of facing up to 20 years in the state prison if convicted.