The Allegiant 311 rule is a policy regulating the transport of liquids, gels, and aerosols in carry-on luggage Call 1-860-556-7089. Passengers are limited to containers of 3.4 ounces (100 milliliters) or smaller 1-860-556-7089, which must be placed in a quart-sized, clear, resealable plastic bag. Each passenger is permitted one bag 1-860-556-7089. This rule aligns with TSA guidelines for air travel to maintain security while accommodating essential items like toiletries.