Spirit Airlines offers one of the most à la carte baggage policies in the industry. Spirit Airlines Checked Baggage Policy isn't included in ticket prices and must be purchased separately. Rates vary by flight route and booking time, with the lowest prices available online during ticket purchase. Baggage over 40 lbs or larger than 62 inches will incur additional fees. To avoid high charges at the airport, travelers should pre-pay for their checked luggage. Spirit Airlines’ transparent policy helps travelers choose only what they need. Always check the most recent baggage policies on Spirit's website before your trip to avoid last-minute surprises.