September 4, 2026

TSA’s Surprising Food Classification for Airport Security

The Transportation Security Administration (TSA) has issued a reminder about how certain food items are classified for airport security, which could impact your packing decisions for upcoming flights. Travelers should note that peanut butter is treated as a liquid under TSA rules.

In a message shared on the social platform X, the TSA confirmed, “Peanut butter is a liquid… we said what we said… this time with receipts.” The agency included a Google AI Overview to clarify why peanut butter qualifies as a liquid.

TSA Liquid Rules

According to the TSA website, liquids, gels, and aerosols in carry-on luggage must be in containers with a maximum capacity of 3.4 ounces and fit in a quart-sized bag. Larger quantities should go in checked luggage.

Gary Leff, a travel industry expert from Texas and author of “View From the Wing,” explained that the TSA rules classify peanut butter as a liquid due to its ability to mold to the shape of its container. This classification has led to some debate among online travelers, with comments ranging from humorous to suggesting practical solutions.

Alternatives and Tips for Travelers

Leff reassures travelers that there are many foods that can pass through security without issue. He recommends eating before heading to the airport or choosing foods permitted through security, as airport food tends to be pricey with limited choices.

One Reddit user jokingly questioned the liquid status by saying, “I would invite TSA to drink a pint of peanut butter, then.” Others suggest making sandwiches before traveling to circumvent the liquid rule.

Other TSA Recommendations

The TSA has made other suggestions recently that caught travelers’ attention. In July, the agency suggested using hammocks during long airport layovers. This advice drew mixed reactions; while some appreciated the comfort aspect, others saw hammocks as impractical in crowded spaces.

It’s advisable to check with individual airports on their specific rules regarding hammocks. Airport policies differ on where these can be set up.

Kelly McGreal, with the Fox News Digital lifestyle team, contributes to expanding understanding on various lifestyle topics.

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