Timing is also crucial in making the most of low-cost cheap flights tickets. Research has proved that advance booking and reservations of 1-3 months for domestic and 3-6 months for international travel have been able to cut costs. Last-minute flights are to be taken only for trips worth taking with cost-effective unsold tickets. https://www.cheapestflightsfares.com/blogs/how-to-book-multi-city-flights-on-spirit/