Spirit still prefers bid from Frontier Airlines over JetBlue

Spirit Airlines said Monday that it still supports Frontier Airlines’ $2.9 billion takeover bid for the airline, saying it was more likely to win regulatory approval than JetBlue’s competing $3.6 billion offer. Spirit said antitrust regulators are unlikely to approve JetBlue’s offer because of JetBlue’s alliance with American Airlines in the Northeast, a deal that the Justice Department is suing to block.