Whether you’re traveling domestically or internationally, a pocket knife can be an invaluable tool to have with you at your destination.

Fortunately, you can bring a pocket knife on a plane – but only in your checked baggage, not your carry on bags.

This comes direct from the TSA.

However, note that the TSA also state that “TSA officers have the discretion to prohibit any item through the screening checkpoint if they believe it poses a security threat.”

There are a few other important things you should be aware of, though, before you think about flying with your pocket knife to ensure that everything goes as smoothly as possible.

Carry On Bags vs. Checked Baggage

Checked Baggage

Passengers are allowed to pack a pocket knife in their checked baggage. This applies to standard pocket knives, kitchen knives, Swiss army knives, and surprisingly, even swords.

TSA does not have a limit on the length or type of blade either – i.e. curved blades, for example, are allowed.

You just have to make sure that you safely secure the blade to avoid any accidents in the event that your baggage needs to be opened and inspected.

Carry On Bags

Under no circumstances are passengers allowed to pack a pocket knife in their carry on bags.

However, if you want to bring a plastic or round-bladed butter knife in your carry on bags, this is allowed.

Interestingly, in 2013, the TSA changed their rules to allow passengers to bring a pocket knife onboard in their carry on bags.

But the public, airlines, and the Association of Flight Attendants pushed back, making this repeal very short-lived.

By Airline

All airlines, including American Airlines, Delta, Southwest, and JetBlue, follow TSA guidelines when it comes to bringing a pocket knife on a plane.

This means that pocket knifes are forbidden in your carry on bags, but allowed in your checked bags.

Domestic vs. International Flights

Brining a pocket knife on a plane isn’t like determining how many ounces you can take on a plane, which all countries are aligned on.

A pocket knife is considered to be a dangerous item that can be used as a weapon, which means international destinations have their own rules and regulations in place.

  • EU: Knives with blades no longer than 6 cm (2.36 inches) are allowed in your carry on bags
  • UK: Knives with blades no longer than 6 cm (2.36 inches) are allowed in your carry on bags
  • Canada: Knives with blades no longer than 6 cm (2.36 inches) are allowed in your carry on bags
  • Australia: Pocket knifes are forbidden in your carry on bags
  • China: Pocket knifes are forbidden in your carry on bags

Can You Bring All Types of Knives On a Plane?

While you are allowed to bring a wide range of knives on a plane in your checked baggage, there are several restrictions.

Generally, the restrictions only apply if the knife is illegal in the first place.

While states may have different laws, it’s a safe bet to avoid packing the following in either your carry on or checked bags.

  • Flick knives
  • Butterfly knives
  • Knives that resemble other objects
  • Throwing stars, death stars, throwing knives
  • Push daggers

Are There Any TSA-Approved Pocket Knifes?

There isn’t such a thing as a TSA-approved pocket knife.

TSA state that pocket knifes are allowed in your checked bags and forbidden in your carry on bags.

They do not give any more information than this, such as the type or length of the blade.

However, the TSA also state that “TSA officers have the discretion to prohibit any item through the screening checkpoint if they believe it poses a security threat.”

So if a TSA agent doesn’t like the look of your pocket knife, it may be confiscated.

Can You Bring Other Sharp Items on a Plane?

Many passengers want to know if they can take other sharp items on a plane – thankfully, the answer is yes to a wide array of items.

  • Box Cutters: Only in your checked bags
  • Disposable Razor: Only in your checked bags
  • Ice Axes/Ice Picks: Only in your checked bags
  • Razor-Type Blades: Only in your checked bags
  • Sabers: Only in your checked bags
  • Saws: Only in your checked bags
  • Scissors: You can bring scissors on a plane in both your carry on bags and checked bags. But if packed in your carry-on, the blade must be less than 4 inches from the pivot point
  • Sewing Needles: Yes, in both your carry on and checked bags
  • Swiss Army Knife: Yes, in both your carry on and checked bags
  • Swords: Yes, in both your carry on and checked bags