Travel SA What is the cheapest day to book flights on spirit by Davis_Porter Jan 14, 2025 0 Comment SA What is the cheapest day to book flights on spirit SA What is the cheapest day to book flights on spirit Website URL: https://www.devex.com/people/sa-what-is-the-cheapest-day-to-book-flights-on-spirit-2475805 SA What is the cheapest day to book flights on spirit