The Transportation Security Administration (TSA) has reiterated its classification of peanut butter as a liquid, a rule that applies to carry-on baggage and has prompted discussion among travelers. Under TSA regulations, liquids, gels, and aerosols in carry-on bags must be contained in containers of 3.4 ounces or less and fit within a single, quart-sized clear bag. Larger amounts of peanut butter are permitted in checked luggage.
Aviation expert Gary Leff explained that the spread's consistency is the reason for its classification. "Peanut butter is a liquid... it conforms to the shape of its container rather than retaining its shape on its own," Leff stated, according to Fox News. This classification means that jars of peanut butter exceeding the 3.4-ounce limit cannot be brought through security checkpoints in carry-on luggage.
The TSA's reminder, shared on social media platform X, included a screenshot of a Google AI Overview that elaborated on the reasoning. This clarification has led to online debate, with some travelers questioning the designation. Some social media users suggested making peanut butter sandwiches before heading to the airport as a workaround.
Leff also advised travelers to consider eating before arriving at the airport or packing solid foods that comply with TSA guidelines, noting that airport dining can be expensive and options limited. The TSA has previously addressed other common traveler questions, such as the allowance of hammocks in airports, which also generated mixed reactions online.