https://www.carolinahuddle.com/topic/280270-faqs-what-is-the-cheapest-day-to-book-spirit-airlines/ https://www.carolinahuddle.com/topic/280270-faqs-what-is-the-cheapest-day-to-book-spirit-airlines/ https://www.carolinahuddle.com/topic/280270-faqs-what-is-the-cheapest-day-to-book-spirit-airlines/