Troubled Spirit Airlines has obtained some financial leeway, borrowing $300 million and obtaining another extended deadline for refinancing a large chunk of its debt, the company has disclosed. The Dania Beach-based discount airline, which is still the predominant carrier at Fort Lauderdale-Hollywood International Airport in terms of passengers carried, said in a filing with the Securities and Exchange Commission on Friday that its credit card processor advanced a 2025 note extension deadline to Dec.