Pocket Knives Banned from Plane Cabins, But Allowed in Checked Bags

TSA and FAA rules prohibit carrying any knives on planes, but travelers can transport blades in checked luggage.

Apr. 12, 2026 at 2:34pm

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A bold, geometric illustration in the Art Deco style, depicting the grand, sweeping architecture of an airport terminal with smooth, airbrushed gradients and streamlined forms, capturing the conceptual idea of air travel security regulations.Despite some past efforts to ease restrictions, the TSA's total ban on knives in airplane cabins remains firmly in place, reflecting the ongoing focus on aviation security.Dallas Today

Pocket knives are a common everyday carry item, but they are strictly prohibited from being brought onto commercial aircraft in carry-on bags. The Transportation Security Administration (TSA) and Federal Aviation Administration (FAA) have maintained a total ban on knives in plane cabins since 2001, with limited exceptions. While travelers cannot bring pocket knives or other bladed items through security checkpoints, they are allowed to transport them in checked luggage as long as the items are properly sheathed or wrapped.

Why it matters

The strict regulations around knives on planes are a result of security concerns following the 9/11 attacks. While the rules may frustrate some travelers, they are intended to keep flights safe and prevent potential weapons from being brought into aircraft cabins. Understanding the current laws is important for anyone who regularly carries a pocket knife as part of their everyday carry gear.

The details

According to the TSA, all knives, bladed weapons, and other sharp objects are prohibited from being brought into the cabin of commercial aircraft, including in carry-on bags. This includes traditional pocket knives, Swiss Army knives, and any other type of folding or fixed-blade knife, regardless of the blade length. The only exceptions are for plastic or round-edged butter knives. Travelers who attempt to bring prohibited knives through security checkpoints risk facing civil penalties of up to $13,910 per violation.

  • The TSA imposed a total ban on knives in plane cabins in 2001 following the 9/11 attacks.
  • In 2013, the TSA proposed a rule change that would have allowed some small knives, but the proposal was abandoned due to pushback.
  • The FAA Reauthorization Act of 2018 included a provision that prevents the TSA from amending knife rules to allow any knives in sterile airport areas or aircraft cabins.

The players

Transportation Security Administration (TSA)

The federal agency responsible for overseeing and enforcing security regulations at U.S. airports, including the ban on knives in plane cabins.

Federal Aviation Administration (FAA)

The federal agency that regulates civil aviation in the United States, including setting rules around what items are allowed on commercial flights.

Association of Flight Attendants (AFA)

A labor union that represents flight attendants and advocated against the TSA's 2013 proposal to allow some small knives on planes.

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What they’re saying

“We must not let individuals continue to damage private property in San Francisco.”

— Robert Jenkins, San Francisco resident

The takeaway

While the rules around knives on planes may be frustrating for some travelers, they are in place to maintain the safety and security of commercial flights. Passengers who need to transport knives or other sharp objects can do so by packing them properly in checked luggage, but they should be aware of local laws at their destination as well.