By Intense Life Desires 
– Shares of Frontier Airlines and JetBlue Airways rose in premarket trading on Monday, after rival Spirit Airlines shut shop, fueling hopes the carriers can capture market share, control prices, and absorb displaced passengers.
JetBlue shares were up about 5%, while Frontier gained 4%.
The bankrupt carrier Spirit ceased operations on Saturday, becoming the industry’s first casualty tied to the Iran war, after failing to win creditor backing for a U.S. government bailout plan.