Interestinghttps://www.wsj.com/articles/spirit-airlines-rejects-jetblue-bid-sticks-with-frontier-deal-11651493285?
However, Spirit’s board said it believed there was too much risk that regulators would bar a merger with JetBlue, even after JetBlue pledged to shed assets to win regulatory approval and to pay a $200 million breakup fee if it was unable to complete the proposed acquisition for antitrust reasons.