A southern Illinois airport that has struggled to attract commercial service since opening nearly two decades ago is adding twice-weekly service to southwest Florida. Mid America Airport announced Thursday that low-cost Allegiant Air will offer twice-weekly trips to Punta Gorda, Florida starting February 18th. Allegiant also flies from Mid America to Saint Petersburg and Sanford, Florida. A Las Vegas route began earlier this month. Airport owner Saint Clair County lost more than $6 million in 2013 on Mid America and has yet to turn a profit since its 1997 opening. That figure climbed to nearly $13 million counting depreciation.