Can You Bring Mouthwash On A Plane?

Travelers are often faced with the dilemma of maintaining personal hygiene while adhering to stringent aviation security regulations. A key item in many personal hygiene kits is mouthwash, an antiseptic solution used to rinse the mouth to clean gums and teeth, and freshen breath. While mouthwash is a staple in daily routines, its presence in carry-on luggage is subject to specific rules that ensure the safety and security of air travel.

The ability to bring mouthwash on a plane has evolved with the changing landscape of airline security. In response to past security threats, the Transportation Security Administration (TSA) in the United States (and similar agencies worldwide) have imposed restrictions on liquids, gels, and aerosols. Since the 2006 transatlantic aircraft plot, which revealed a scheme to use liquid explosives, stringent measures were put in place to limit the quantities of liquids passengers can bring on board. These limitations have a direct impact on items such as mouthwash when packed in carry-on bags or taken through airport security checkpoints.

In the current context, passengers are required to adhere to the 3-1-1 liquids rule for carry-on items, a regulation that reflects a compromise between convenience and security. The rule stipulates that liquids must be in containers no larger than 3.4 ounces or 100 milliliters, all of which must fit comfortably within a single, clear, quart-sized bag. This directive has altered the way travelers pack and has generated a variety of travel-sized products to meet these requirements. Adhering to these regulations is crucial for a hassle-free airport security experience, and it emphasizes how security considerations shape even the minute aspects of contemporary air travel logistics.

can you bring mouthwash on a plane

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Can You Take Mouthwash On A Plane?

When traveling by air, passengers often wonder about the restrictions on liquids and whether they can take mouthwash on a plane. The answer is yes, but with certain limitations. According to the Transportation Security Administration (TSA), travelers are allowed to carry liquids in containers that hold 3.4 ounces (100 milliliters) or less per item. These containers must be placed in a clear, quart-sized bag, with one bag allowed per passenger. Larger quantities of mouthwash can be packed in checked luggage without restriction. Taking mouthwash on a plane can be advantageous for maintaining oral hygiene, especially during long flights or layovers. For those looking to freshen their breath or adhere to their dental care routine while traveling, understanding these regulations is essential. In the following section, we will delve deeper into the guidelines for carrying mouthwash and other liquids on a plane, ensuring you’re well-prepared for your next flight.

Carrying Mouthwash on USA Domestic Flights: TSA Guidelines

Travelers who wish to carry mouthwash on domestic flights within the United States need to adhere to the regulations set by the Transportation Security Administration (TSA). Understanding these guidelines will help ensure a smooth security checkpoint experience. Key points regarding mouthwash in your carry-on and checked luggage are delineated by the TSA.

Liquids Rule for Carry-On Luggage

  • Mouthwash is subject to TSA’s 3-1-1 liquids rule, which allows passengers to carry liquids in containers of 3.4 ounces (100 milliliters) or less per item.
  • Each passenger is limited to one quart-sized bag of liquids, aerosols, gels, creams, and pastes.
  • Containers must fit comfortably within the transparent, sealed, quart-sized plastic bag.
  • The plastic bag should be presented separately from other carry-on items during the security screening process.

Additional information on the TSA 3-1-1 liquids rule can be found on the TSA website.

Mouthwash in Checked Luggage

  • There are no TSA restrictions on the volume of mouthwash a passenger can pack in their checked luggage.
  • However, passengers should consider the potential for leakage and package mouthwash securely to prevent damage to other items.

Purchasing Mouthwash After Security Screening

  • Travelers can purchase mouthwash in any size at airport shops located beyond the security checkpoint. These items are allowed on the flight without adherence to the 3-1-1 rule.

Special Considerations for Prescription Mouthwash

If a traveler requires prescription mouthwash, special considerations apply:

  • Prescription medications, including mouthwash, are allowed in larger quantities than the standard 3.4 ounces.
  • Medications do not need to be placed in the quart-sized bag.
  • Travelers should declare these items to TSA officers at the beginning of the screening process for inspection.
  • The name on the prescription bottle should match the passenger’s boarding pass.

It’s prudent for travelers with prescription mouthwash to review the TSA guidelines on medication, available here.

Exemptions and Special Cases

  • TSA officers have the discretion to allow exceptions to the liquids rule, including for medical necessities or child nourishment.

For current TSA guidelines and special exemptions, visit the TSA page on special procedures.

Alcohol-Based Mouthwash

  • Alcohol-based mouthwash is permitted but must comply with the TSA’s 3-1-1 rule for carry-on bags.
  • In checked luggage, alcohol content determines whether the mouthwash has any shipping restrictions.
  • Mouthwash with alcohol content of 70% (140 proof) or lower is generally allowed in checked luggage without quantity limitations.

Further guidance on alcohol regulations can be obtained by consulting the FAA regulations or TSA’s policy on alcoholic beverages.

Tips for Traveling with Mouthwash

  • Use travel-sized mouthwash bottles to avoid having to transfer larger amounts into smaller containers.
  • Consider solid mouthwash tablets, which do not fall under the 3-1-1 liquids rule.
  • Keep prescription documentation readily available if traveling with medical mouthwash.
Pros ✔ Cons ✘
Small amounts under 3.4 ounces (100ml) are allowed in carry-on bags. Bottles over 3.4 ounces (100ml) must be checked in, which can be inconvenient.
Helps maintain oral hygiene during long flights. Mouthwash containers must be placed in a quart-sized bag, limiting the quantity you can bring.
Convenient for freshening up before landing or in between flights. Potential for spillage or leakage, which can damage other items in your bag.
Travel-sized mouthwash is readily available and designed to comply with air travel regulations. Additional security screening if the liquids alarm the security checkpoint.
Useful for travelers with braces or other dental appliances. Buying mouthwash at airport stores after security can be more expensive.

International Air Transport Association (IATA) Guidelines

When flying internationally with mouthwash, passengers must adhere to the guidelines set by the International Air Transport Association (IATA). These guidelines are designed to ensure safety and security on board aircraft. According to IATA, liquids, aerosols, and gels in carry-on baggage must be in containers with a capacity not greater than 100 milliliters (or equivalent in other volumetric measurements) and must be contained in a transparent resealable plastic bag of a maximum capacity not exceeding one liter. This is known as the Liquids Rule.

  • Containers must hold no more than 100 ml (3.4 ounces).
  • All containers must fit comfortably in one transparent, resealable plastic bag (about the size of a zip-top sandwich bag).
  • Each passenger is limited to one plastic bag.
  • The bag must be presented separately from other carry-on items for screening at airport security.

For more detailed information, please refer to the IATA guidelines on dangerous goods, which include restrictions on liquids.

Country Specific Regulations

While the IATA provides general guidelines for air travel, it is important to note that individual countries may have their own specific regulations regarding the transport of liquids, including mouthwash. These regulations can vary and may be more restrictive than IATA guidelines. Therefore, it is crucial for travelers to check the regulations of their destination country as well as any countries they may transit through.

United Kingdom

  • UK follows the standard EU liquid restrictions in carry-on luggage.
  • Refer to the UK government guidelines for the most current information.



  • Transport Canada follows similar guidelines for liquids in carry-ons.
  • For specifics, visit the Transport Canada page.


New Zealand

  • New Zealand’s Civil Aviation Authority provides guidance on liquid restrictions.
  • Visit the CAA New Zealand page for more information.


  • Asian countries may have varying regulations; it’s best to check with the specific country’s civil aviation authority.


  • Singapore’s Changi Airport enforces the standard liquid rule.
  • Guidelines are available on the Changi Airport page.

10 Airline-Specific Regulations for Flying with Mouthwash

Different airlines may have their own policies and procedures when it comes to flying with mouthwash and other liquids. It is essential for passengers to review and comply with the airline’s specific regulations to avoid any inconvenience during their journey. Below are examples of airline-specific regulations regarding flying with mouthwash.

American Airlines

Delta Air Lines

United Airlines

  • Adheres to the standard TSA liquid restrictions.
  • United’s policy can be found on their carry-on baggage page.

Southwest Airlines

British Airways


Air Canada


Air New Zealand

Singapore Airlines

Packing Mouthwash in Carry-On Luggage

When it comes to carrying mouthwash in your carry-on luggage, it’s essential to comply with the current airport security regulations. As per the Transportation Security Administration (TSA) guidelines, all liquids must adhere to the 3-1-1 rule. This means each passenger is allowed to pack liquids in containers of 3.4 ounces (100 milliliters) or less, which should fit comfortably in one quart-sized, clear, sealable bag. Here’s how to pack your mouthwash properly:

  • Purchase a Travel-Size Mouthwash: Opt for a travel-sized bottle that’s 3.4 ounces or less to stay within TSA liquid limits.
  • Use a TSA-Approved Toiletry Bag: Place your small mouthwash container into a clear, quart-sized bag along with other small liquids, gels, and aerosols.
  • Check for Leaks: Before packing, tighten the cap of the mouthwash bottle or seal it with plastic wrap to prevent any spillage during transit.
  • Security Check Preparation: Keep your toiletry bag accessible, as you’ll need to place it in a bin for X-ray screening at the security checkpoint.

Packing Mouthwash in Hold Luggage

For those who prefer to pack mouthwash in their checked baggage, the strict liquid regulations for carry-ons do not apply. However, to avoid accidents and keep your belongings safe, certain precautions should be taken:

  • Choose the Right Size: You are not limited to 3.4 ounces, so you can bring a full-sized bottle of mouthwash in your checked luggage.
  • Prevent Spills: Even in hold luggage, bottles can leak under pressure. Ensure the mouthwash cap is tight and consider sealing it with plastic wrap, then place it in a leak-proof bag.
  • Use Cushioning: Surround the bottle with clothes or bubble wrap to provide extra protection against the knocks and bumps of travel.
  • Place Mouthwash Strategically: Position the bottle in the center of your suitcase to minimize the risk of damage from external pressure.

taking mouthwash through airport security

Travel Essentials Similar to Mouthwash

When packing for a flight, alongside mouthwash, consider including travel-sized toiletries such as toothpaste, deodorant, and hand sanitizer to maintain personal hygiene. Facial wipes or makeup remover pads are convenient for freshening up, while a compact first-aid kit with band-aids and pain relievers can address minor emergencies. Don’t forget sunscreen and lip balm to protect your skin from varying climates, and a small bottle of moisturizer to combat the dry cabin air. For those who wear contact lenses, a small bottle of solution and a case is a must. Lastly, pack a few essential oils or a travel-sized pillow spray to help you relax and possibly get some sleep during the flight.

FAQ’s About Can You Bring Mouthwash On A Plane?

Travelers often have questions regarding the rules and regulations of carrying liquids, such as mouthwash, on an airplane. With security protocols and guidelines constantly updating, it can be confusing to know what is permissible. Below, you’ll find a compilation of frequently asked questions that aim to clarify the doubts about bringing mouthwash on a plane, ensuring you can maintain your oral hygiene while adhering to the travel rules.

Can I bring mouthwash in my carry-on luggage?

Yes, you can bring mouthwash in your carry-on luggage but it must comply with the Transportation Security Administration (TSA) liquids rule, which allows containers of 3.4 ounces (100 milliliters) or less.

Is there a limit to the amount of mouthwash I can bring on a plane?

In your carry-on, you are limited to containers that fit within a single, quart-sized, clear plastic, zip-top bag, with each container holding 3.4 ounces (100ml) or less. In checked luggage, there are no limits to the amount of mouthwash you can bring.

Does mouthwash need to be in its original packaging?

While it’s not mandatory for mouthwash to be in its original packaging, it’s recommended, especially if it helps identify the contents as a legitimate toiletry product.

Can I bring a full-size bottle of mouthwash in my checked baggage?

Yes, you can bring a full-size bottle of mouthwash in your checked baggage without any restrictions on volume.

Will mouthwash count towards my liquid limit in a carry-on bag?

Yes, mouthwash counts towards your liquid limit in a carry-on bag, and it must adhere to the TSA’s 3-1-1 liquids rule.

What should I do if I need mouthwash for a medical condition?

If you require mouthwash for a medical condition, you may be allowed to exceed the 3.4-ounce limit, but you should declare it to security officers at the checkpoint for further inspection.

Can I purchase mouthwash after passing through security?

Yes, you can purchase mouthwash after passing through security, and these items are usually not subject to the 3.4-ounce limit since they are screened separately.

Is alcohol-free mouthwash treated differently by airport security?

No, alcohol-free mouthwash is not treated differently. The same rules apply to all liquids, irrespective of their alcohol content, when carried in your carry-on luggage.

What happens if I mistakenly bring a large bottle of mouthwash in my carry-on?

If you bring a bottle of mouthwash that is larger than 3.4 ounces in your carry-on by mistake, it will likely be confiscated at the security checkpoint.

Are there any special instructions for packing mouthwash in checked baggage to prevent spillage?

To prevent spillage, it’s wise to seal mouthwash bottles in leak-proof plastic bags and ensure they are tightly closed. Padding them with clothes or packing materials can also provide extra protection against movement and pressure changes.

Packing It All Up

In summary, travelers are allowed to bring mouthwash on a plane, adhering to the guidelines set by transportation authorities such as the TSA. When packing mouthwash in carry-on luggage, it is essential to remember the liquids rule, which permits bottles of 3.4 ounces (100 milliliters) or less housed in a single, clear, quart-sized bag. This ensures swift passage through security checkpoints and compliance with regulations aimed at maintaining in-flight safety. For those preferring larger quantities or extended travel durations, packing mouthwash in checked baggage offers a convenient alternative. Doing so sets aside the volume restrictions imposed on carry-on items, granting passengers the freedom to bring full-sized bottles of their preferred mouthwash, ensuring fresh breath throughout their journey.

Moreover, travelers with specific medical conditions or prescription mouthwashes fall under an exception, where they may carry quantities necessary for the trip even in their carry-on luggage, albeit with a requirement to declare these items separately at the security checkpoint. To optimize packing and navigate airport security seamlessly, it is advisable to be well-informed of the latest rules and any potential changes. Whether utilizing travel-sized containers for short trips or packing ample supplies in checked luggage, the key to a pleasant flying experience with mouthwash lies in proper planning and compliance with current travel regulations.