Toiletry aerosol on a plane

Allowed, with conditions

Short answer: Under TSA and FAA rules: yes, in carry-on bags with volume of one container up to 3.4 fl oz (100 ml) and total volume up to 2 l (68 fl oz), and in checked bags with volume of one container up to 500 ml (17 fl oz) and total volume up to 2 l (68 fl oz) (reviewed 2026-10-27).

These are the reviewed rules for a toiletry aerosol on flights departing the United States. Each rule is listed as its official source states it, with the date we last reviewed it. A rule from security screening, from the dangerous goods regulations and from your airline can all apply at once, and you need to meet every one of them.

Most recent review on this page: 2026-10-27. Also called: hair spray, hairspray, aerosol deodorant, spray deodorant.

Check your toiletry aerosol with the item checker

Toiletry aerosol in a carry-on bag

Security screening (TSA)

  • Allowed, with the conditions listed

    Toiletry aerosol: allowed in carry-on bags in containers of 3.4 oz (100 ml) or less.

    Limits
    Volume of one container: up to 3.4 fl oz (100 ml)

    Source: TSA: What Can I Bring? Hair Spray. Reviewed on 2026-10-27.

Dangerous goods (FAA)

  • Allowed, with the conditions listed

    Toiletry aerosol as a medicinal or toiletry article: each container not over 500 ml (17 fl oz), not over 2 L (68 fl oz) in total per person.

    Limits
    Volume of one container: up to 500 ml (17 fl oz)
    Total volume: up to 2 l (68 fl oz)

    Also note

    • By weight the limits are 0.5 kg (18 oz) per container and 2 kg (70 oz) in total; this rule checks the volume figures.
    • Liquids, gels and aerosols in carry-on baggage are further limited to 100-ml (3.4 oz) containers at the TSA security checkpoint.
    • Aerosol release devices (button/nozzle) must be protected by caps or other suitable means to prevent accidental release.

    Source: FAA: PackSafe - Medicinal & Toiletry Articles. Reviewed on 2026-10-27.

American Airlines policy

  • Allowed, with the conditions listed

    Toiletry aerosol on American: in the carry-on bag in travel-size containers of 3.4 ounces or smaller.

    Limits
    Volume of one container: up to 3.4 fl oz

    Also note

    • Must be in a clear, plastic, one-quart zip-top bag.

    Source: American Airlines: Restricted items in bags. Reviewed on 2026-10-27.

Delta Air Lines policy

  • Allowed, with the conditions listed

    Toiletry aerosol on Delta: in the carry-on, a maximum of 3.4 ounces or 100 milliliters per item.

    Limits
    Volume of one container: up to 3.4 fl oz (100 ml)

    Also note

    • Place all items in one single quart-size, zip-top bag of clear plastic.

    Source: Delta Air Lines: Carry-On Baggage. Reviewed on 2026-10-27.

United Airlines policy

  • Allowed, with the conditions listed

    Toiletry aerosol on United: in the carry-on bag, in a container no larger than 3.4 ounces (100 mL).

    Limits
    Volume of one container: up to 3.4 fl oz (100 ml)

    Also note

    • Must be placed inside a quart-size clear, sealable bag.

    Source: United Airlines: Carry-on Bags. Reviewed on 2026-10-27.

Toiletry aerosol in a checked bag

Security screening (TSA)

  • Allowed, with the conditions listed

    Toiletry aerosol: allowed in checked bags by the TSA, with special instructions.

    Also note

    • The FAA limits the total amount of restricted medicinal and toiletry articles, including aerosols, in checked baggage.
    • Aerosol release devices (button/nozzle) must be protected by caps or other suitable means to prevent accidental release.

    Source: TSA: What Can I Bring? Hair Spray. Reviewed on 2026-10-27.

Dangerous goods (FAA)

  • Allowed, with the conditions listed

    Toiletry aerosol as a medicinal or toiletry article: each container not over 500 ml (17 fl oz), not over 2 L (68 fl oz) in total per person.

    Limits
    Volume of one container: up to 500 ml (17 fl oz)
    Total volume: up to 2 l (68 fl oz)

    Also note

    • By weight the limits are 0.5 kg (18 oz) per container and 2 kg (70 oz) in total; this rule checks the volume figures.
    • Aerosol release devices (button/nozzle) must be protected by caps or other suitable means to prevent accidental release.

    Source: FAA: PackSafe - Medicinal & Toiletry Articles. Reviewed on 2026-10-27.

American Airlines policy

  • Allowed, with the conditions listed

    Toiletry aerosol on American: in checked bags, each container no more than 16 fluid ounces and no more than 70 ounces in total.

    Limits
    Volume of one container: up to 16 fl oz

    Also note

    • No more than 70 ounces in total (the page does not say whether by weight or by volume; not checked by this rule).

    Source: American Airlines: Restricted items in bags. Reviewed on 2026-10-27.

Before you pack toiletry aerosol

Use this list with your actual item and itinerary. It summarizes the current source-reviewed entries below; it does not replace the complete conditions or the airline's instructions.

  1. Check the reviewed Carry-on bag and Checked bag rules below. If a bag type is not listed, that does not mean it is allowed: verify it with the airline and relevant authority.
  2. Check the item's specifications against the listed requirements:
    • Carry-on bag · security screening: Volume of one container: up to 3.4 fl oz (100 ml). Official source.
    • Carry-on bag · dangerous goods: Volume of one container: up to 500 ml (17 fl oz); Total volume: up to 2 l (68 fl oz). Official source.
    • Carry-on bag · airline policy: Volume of one container: up to 3.4 fl oz. Official source.
    • Carry-on bag · airline policy: Volume of one container: up to 3.4 fl oz (100 ml). Official source.
    • Carry-on bag · airline policy: Volume of one container: up to 3.4 fl oz (100 ml). Official source.
    • Checked bag · dangerous goods: Volume of one container: up to 500 ml (17 fl oz); Total volume: up to 2 l (68 fl oz). Official source.
    • Checked bag · airline policy: Volume of one container: up to 16 fl oz. Official source.
  3. Confirm the operating airline, connecting airports and destination rules. This site does not verify destination customs or quarantine restrictions.
  4. Recheck the linked official sources shortly before departure; published guidance and your flight circumstances can change.

What you need to know about your toiletry aerosol

The rules above depend on:

  • Volume of one container
  • Total volume

Commonly confused

  • Allowed in a carry-on bag does not mean allowed in a checked bag. The rules for each are listed separately above.
  • Security screening (TSA) and dangerous goods rules (FAA) are different rules. An airline can also set stricter limits. Where a source has no rule for a case, we say so instead of guessing.
  • Airline rules come from the airline that operates the flight, which can differ from the one you booked with.
  • Being allowed on board does not mean the item is allowed into your destination. Customs rules are not covered.

Airlines with their own toiletry aerosol rules

Airline pages for toiletry aerosol show only the airlines whose own rules differ from the TSA and FAA rules.

Official sources

This page lists rules as the official sources state them, for travel departing the United States. It is not a decision about your item: security officers and your airline make the final call, and rules can change after the review dates shown. Destination customs and quarantine rules are not checked. See the terms and disclaimer.