Powders TSA Rules: What You Can Bring on a Plane

Since 2018, TSA applies enhanced screening for powder containers over 12 ounces in carry-on bags. Here is what travelers need to know about protein powder, baby powder, flour, and other powders.

8 items in this category with TSA carry-on and checked bag rules.

Powders are allowed in both carry-on and checked bags, but any powder-like substance of 12 ounces (350ml) or more in carry-on may be pulled for separate screening and can be prohibited if it cannot be resolved. Under 12 ounces passes normally. There is no size limit in checked baggage.

How powders are screened at the checkpoint

  1. The 12-ounce threshold — Containers of powder at or above 12 oz — roughly the size of a soda can — are the ones officers separate out. Smaller containers are treated like any other solid.
  2. Separate the large containers yourself — Put protein powder, baby formula tubs, or large spice jars in a bin rather than deep inside the bag. It saves a full unpack when the alarm sounds.
  3. Expect a swab or an open container — Screening may involve a trace swab of the outside, or opening the lid to view the contents. Officers do not need to taste or remove the powder.
  4. Unresolvable powders are not allowed through — If the substance cannot be identified, the officer can require it be surrendered or checked. Original labeled packaging almost always resolves this.
  5. Medical and infant powders get leeway — Declare baby formula, powdered breast milk, and prescription powders before screening — these are treated as medically necessary and are not subject to the 12 oz guidance.

Powder packing checklist

Fine in carry-on

  • Single-serve protein or supplement sachets
  • Powdered makeup, dry shampoo powder, and baby powder in small containers
  • Ground coffee and loose tea
  • Spices in small labeled jars
  • Powdered medication in a labeled pharmacy container

Better in checked baggage

  • Full tubs of protein powder, creatine, or pre-workout
  • Large bags of flour, sugar, or powdered drink mix
  • Bulk spices and seasoning blends
  • Cremated remains are the exception — carry those on in a scannable container, never check them

Never packed as powder

  • Gunpowder, black powder, and reloading propellant, which are prohibited in both bags
  • Powdered fire extinguisher or flare contents
  • Unlabeled white powders of any kind, which invite a law-enforcement referral

Common mistakes with powders

  • Decanting protein powder into an unlabeled zip bag, which looks identical to a suspicious substance on screening.
  • Assuming the 3-1-1 quart bag applies to powders — it does not; powders have their own 12 oz guidance.
  • Packing a full protein tub in carry-on and losing it at the checkpoint rather than checking it.
  • Checking cremated remains, which can be lost; they should always fly in carry-on in a scannable, non-lead container.
  • Forgetting that the 12 oz figure is guidance for extra screening, not an automatic ban.

All Powders Items

  • Protein Powder — Carry-on: Conditions Apply, Checked: Allowed
  • Spices / Seasonings — Carry-on: Allowed, Checked: Allowed
  • Flour / Sugar — Carry-on: Conditions Apply, Checked: Allowed
  • Makeup (Powder) — Carry-on: Allowed, Checked: Allowed
  • Baby Powder / Talcum Powder — Carry-on: Conditions Apply, Checked: Allowed
  • Powdered Drink Mix — Carry-on: Conditions Apply, Checked: Allowed
  • Baking Powder / Baking Soda — Carry-on: Conditions Apply, Checked: Allowed
  • Powdered Milk / Creamer — Carry-on: Conditions Apply, Checked: Allowed

Frequently Asked Questions

Does TSA have special rules for powders?

Yes, powder containers over 12 ounces in carry-on may receive enhanced screening.

Can I bring protein powder in my carry-on?

Yes, but large containers may trigger additional screening. Consider single-serving packets.

Can I bring flour or baking supplies on a plane?

Yes, flour and baking supplies are allowed in both carry-on and checked bags.

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