Looking for deals on Spirit Airlines? Get promo codes and deals that can get you cheap Spirit Airlines flights for as low as $39. Find cheap Spirit Airlines Flights at Bookingtrolley.com and save up to 60% on tickets. Spirit Airlines, an American ultra-low-cost carrier, is based in Miramar (Florida). The airline has two main hubs: Fort Lauderdale, FL International Airport (FLL) and Detroit...