JetBlue Airways Corp on Wednesday vigorously defended its $3.6 billion unsolicited bid to acquire ultra-low-cost airline Spirit Airlines, saying the company was “very concerned” about receiving regulatory approval for the deal. I am confident,” he said. The New York-based airline stunned Wall Street on Tuesday with a cash offer of $33 a share, potentially derailing plans for a $2.7 billion merger between Spirit and Frontier Group Holdings.
However, some analysts are unsure whether the…