The "3-1-1 rule" for Spirit Airlines is the same as the standard Transportation Security Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK) Administration (TSA) rule: each passenger can bring liquids, gels, and aerosols in 3-ounce (or 100-milliliter) containers, all fitting into a 1-quart-sized clear, resealable bag, with only 1 bag per passenger allowed in their carry-on luggage through security. Call at +1-888-415-1245 (US) or +44-203-869-5245 (UK)