Spirit Airlines charges varying fees for bags based on size and when the fee is paid, but a fee for carry-on bags is standard, as only one personal item is allowed for free. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) You can save money by purchasing bag allowances online during booking or before check-in, as fees are higher at the airport and the gate. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) Fees for checked bags typically start around $26–$35 when booked and increase for second, third, and subsequent bags, with excess weight or oversized bags incurring additional fees.