Higher air fares as Spirit's low-price floor vanishes

The cheapest one-way seat from Fort Lauderdale to Kingston cost US$107 when Spirit Airlines was flying. Today, it starts at about US$157 — nearly 50 per cent more — based on current fares on online aggregators. 
That gap, visible in cached and recent pricing data captured before and after Spirit's May 2 shutdown, illustrates what aviation economists call the ‘Spirit effect — the removal of the competitive pressure that kept every other carrier's fares in check on the same route.