American Airlines Cabin Toiletries & Liquid Rules Explained: What UK Travellers Need to Know
Flying American Airlines from the UK and wondering whether your shampoo is too large, your toothpaste counts as a liquid or your deodorant can go in your cabin bag?
For UK travellers, there are two different sets of rules to think about.
American Airlines controls the size and number of bags you can take on board. Airport security controls which liquids, toiletries and other items can pass through screening.
Those rules overlap, but they aren't the same.
There's another complication when you're travelling between the UK and the United States: you may encounter different security procedures on different parts of your journey.
The good news is that most everyday toiletries are perfectly acceptable. You just need to understand which rules apply and pack accordingly.
American Airlines Toiletries: Quick Answer
Toiletries are allowed in American Airlines cabin baggage.
American Airlines permits travel-size personal-care liquids in containers of 3.4oz/100ml or less.
American's published guidance says these should be placed in a clear plastic one-quart zip-top bag.
Toothpaste, creams, gels, aerosols and many cosmetics count as liquids.
Aerosol deodorant, hairspray, perfume and similar personal-care products are permitted subject to the applicable restrictions.
American Airlines allows one carry-on bag plus one personal item.
The main carry-on can measure up to 56 × 36 × 23cm (22 × 14 × 9in).
The personal item can measure up to 45 × 35 × 20cm (18 × 14 × 8in) and must fit under the seat.
Security arrangements can differ between airports, so check the rules for every airport on your journey.
What Are American Airlines' Cabin Toiletries Rules?
American Airlines permits normal personal-care products in cabin baggage, subject to restrictions.
Its current restricted-items guidance specifically gives examples including:
Aerosol deodorant
Hairspray
Insect repellent
Perfume and cologne containing alcohol
Nail polish
Nail polish remover
For cabin baggage, American says personal-care items must be travel size — 3.4oz/100ml containers or smaller — and placed in a clear plastic one-quart zip-top bag.
That makes 100ml travel-size toiletries a straightforward choice for a journey between the UK and US.
However, remember that the airline isn't necessarily operating the airport security checkpoint.
When departing the UK, the security requirements of your UK airport apply. When returning from the United States, you'll encounter US security requirements.
What Counts as a Liquid?
Airport liquid rules cover considerably more than bottles of water and shampoo.
For toiletries, you should think about:
Shampoo
Conditioner
Shower gel
Toothpaste
Moisturiser
Face creams
Sun cream
Perfume and aftershave
Liquid foundation
Mascara
Lip gloss
Shaving gel or foam
Aerosol deodorant
Hairspray
Hand sanitiser
Contact lens solution
Pastes, creams, gels and sprays can all fall within liquid restrictions.
That's why toothpaste counts, even though you wouldn't normally describe it as a liquid.
Does the 100ml Rule Apply on American Airlines?
American Airlines' own published guidance limits liquids, aerosols and gels in carry-on baggage to containers of 3.4oz/100ml or less. It states a limit of one litre and 10 containers per passenger.
For UK departures, you should also follow the security rules at the airport you're actually travelling through.
Most UK airports still restrict liquids above 100ml, although security arrangements are changing as newer scanning equipment is introduced.
The practical point is simple:
Don't assume the rules will be identical at every airport on your journey.
If you're travelling London–New York–London, for example, the procedures you encounter leaving the UK aren't necessarily the procedures you'll encounter on your return journey.
What About Your Return Journey from the USA?
This is particularly important with American Airlines because many CabinCleared readers will be travelling between the UK and United States.
A product that passed through security at your UK departure airport still needs to comply with the rules you encounter on the return journey.
American itself directs passengers travelling with liquids to the TSA's requirements, and its own cabin-liquids guidance retains the 3.4oz/100ml limit.
If you're connecting within the United States or elsewhere, there may also be another security screening during the journey.
For a return trip, therefore, travel-size containers of 100ml or less remain the simplest option.
Staying Connected When You Arrive
Once your toiletries and cabin baggage are sorted, it's also worth thinking about how you'll use your phone when you land in the United States.
UK roaming charges in the USA vary considerably between mobile networks and tariffs, and a travel eSIM can provide another way of getting mobile data abroad on a compatible phone.
Many Dual SIM phones allow you to keep your normal UK SIM active for your usual number while using a separate travel eSIM for mobile data.
Before travelling, compare the cost and data allowance of your UK network's roaming option with an appropriate travel eSIM.
How Big Is an American Airlines Carry-On Bag?
American Airlines currently allows passengers to bring one carry-on bag plus one personal item, provided both meet its requirements.
Main carry-on bag
The maximum dimensions are:
56 × 36 × 23cm (22 × 14 × 9in)
Importantly, American says these measurements include handles and wheels.
The bag must fit in the airport baggage sizer and either the overhead bin or under the seat in front of you.
Personal item
You can also bring one personal item, such as a purse or small handbag, measuring no more than:
45 × 35 × 20cm (18 × 14 × 8in)
Your personal item must fit underneath the seat in front of you.
Certain items don't count towards these allowances, including one diaper bag per child, a breast pump, a small soft-sided cooler of breast milk, and qualifying medical or mobility devices.
One further point is worth knowing: some American Eagle regional aircraft have more limited overhead-bin space. American says larger cabin bags may therefore need to be valeted at the gate on certain regional flights.
Can You Take Toothpaste on American Airlines?
Yes.
Toothpaste can be carried in cabin baggage, but because it's a paste it falls within airport liquid restrictions.
For the most straightforward journey, use a tube of 100ml or less and pack it with your other liquids.
Remember that it's the capacity of the tube that matters, not how much toothpaste remains inside it.
A nearly empty 150ml tube is still a 150ml container.
Can You Take Deodorant on American Airlines?
Yes.
American Airlines specifically lists aerosol deodorant among the personal-care products permitted for travel.
Roll-on and gel deodorants are also treated as liquids for security purposes.
For cabin baggage, keep liquid, gel and aerosol deodorants within the 3.4oz/100ml container limit.
Can You Take Aerosols on American Airlines?
Some personal-care aerosols are permitted, but that doesn't mean every aerosol can travel.
American specifically permits personal-care products such as aerosol deodorant and hairspray, subject to its restrictions. Other aerosol products can be prohibited.
So don't assume that because a product comes in a small aerosol can it is automatically acceptable.
For cabin toiletries, keep permitted aerosols at 100ml/3.4oz or less.
Can You Take Shampoo and Conditioner on American Airlines?
Yes.
Both are ordinary toiletries, but both count as liquids.
For cabin baggage, use containers no larger than 100ml/3.4oz.
For a short trip, small bottles can also make more practical sense than carrying more product than you'll use.
Can You Take Sun Cream on American Airlines?
Yes.
Sun cream can travel in cabin baggage, but lotions, creams and sprays are subject to the applicable liquid restrictions.
For a cabin-only trip, a container of 100ml or less is the simplest option.
If you're travelling to Florida, California or another warm destination for a longer holiday, you may need considerably more sun protection than a cabin-size container provides. In that situation, checked baggage or buying additional sun cream after arrival may be more practical.
Can You Take Makeup on American Airlines?
Yes.
The important distinction isn't whether something is called makeup; it's its physical form.
Products such as:
Mascara
Liquid foundation
Liquid concealer
Lip gloss
Cream cosmetics
Gel products
should be treated as part of your liquids.
Powders and genuinely solid cosmetics don't normally need to use your liquid allowance.
Can You Take Perfume and Aftershave?
Yes.
American Airlines specifically lists perfume and cologne containing alcohol as permitted personal-care items.
For carry-on baggage, keep the container within 3.4oz/100ml and pack it with your other liquids.
Remember that a decorative 150ml perfume bottle containing only 30ml of perfume is still a 150ml container.
What About Medicines?
Medicines can be subject to different rules from ordinary toiletries.
American Airlines' liquids guidance says liquids, aerosols and gels required for medical purposes or special needs can be carried in containers larger than 100ml.
American notes that an agent may request verification of the type and quantity being carried.
Medical and mobility devices also don't count towards American's normal carry-on allowance.
If you're carrying essential medicine, particularly liquid medication exceeding the normal limit, check the requirements for the airports and countries involved in your journey before travelling.
Don't reduce or leave behind necessary medication simply to make it fit ordinary toiletry rules.
What About Baby Milk and Breast Milk?
American has specific allowances for passengers travelling with children.
It allows one carry-on diaper bag per child. A breast pump and small soft-sided cooler of breast milk don't count as your carry-on or personal item. American says these can be carried even when you're not travelling with a child.
If you're travelling internationally with an infant on your lap, American also currently permits one checked bag for the infant free of charge, up to 11kg and 56 × 36 × 23cm.
Security rules governing milk and baby food should still be checked for the airports involved in your journey.
Can Toiletries Go in American Airlines Checked Baggage?
Many ordinary toiletries can, and American publishes specific limits for personal-care products in checked baggage.
American says permitted personal-care items in checked baggage must total no more than 70oz and each individual container must contain no more than 16 fluid ounces.
That can make checked baggage more practical if you need larger quantities of shampoo, sun cream or similar products.
However, not every aerosol or pressurised product is permitted simply because it's going in the hold. Always check unusual products against American's restricted-items guidance.
Best Toiletries for an American Airlines Cabin Bag
For a UK–USA trip, the aim isn't to pack your entire bathroom cabinet.
It's to carry enough for the journey and the first part of your stay without wasting cabin space.
Toothpaste
A travel-size tube takes very little room and is enough for many short trips.
Deodorant
A compact roll-on or permitted travel-size aerosol is easy to pack.
Shampoo and Conditioner
Small bottles are usually sufficient for a short stay. Check whether your hotel provides them before packing your own.
Shower Gel
Again, think about how much you'll actually use.
Sun Cream
Particularly important for warmer destinations, although it can consume a large proportion of your liquids allowance.
Moisturiser
Long-haul flights can be drying, making a small moisturiser useful in your cabin bag.
Face Wash
Pack what you actually use rather than carrying an entire skincare routine.
Shaving Essentials
American permits safety/disposable razors in carry-on baggage, while straight razors aren't permitted in the cabin.
The principle is simple- Pack for the trip you're actually taking, rather than every possible eventuality.
American Airlines Toiletries for Different Trips
New York City Break
For four or five days, travel-size toothpaste, deodorant, shampoo and a few everyday essentials may be all you need.
Hotel toiletries can reduce what you need to carry further.
Florida Holiday
Sun protection becomes much more important.
Rather than trying to squeeze enough sun cream for a two-week holiday into your liquids bag, consider taking enough for arrival and buying additional supplies locally.
Business Trip
Predictability matters more than quantity.
Keeping a dedicated wash bag containing familiar travel-size products can make frequent transatlantic travel much easier.
Couples Travelling Together
Sharing products such as toothpaste, shampoo or shower gel can save space.
There's little point carrying two identical bottles if one will comfortably last the trip.
Longer USA Trips
Travel-size doesn't necessarily mean you need enough product for the entire holiday.
A useful strategy can be to carry enough toiletries for the flight and first couple of days, then buy larger everyday products after arrival.
Common American Airlines Toiletry Packing Mistakes
Packing a Half-Empty Oversized Container
A larger bottle doesn't become cabin compliant simply because you've used most of its contents.
Forgetting That Pastes and Creams Count
Toothpaste, moisturiser, sun cream and similar products can easily be overlooked.
Assuming All Aerosols Are Allowed
They're not.
American permits certain personal-care aerosols, including aerosol deodorant and hairspray, but other aerosol products can be prohibited.
Only Checking the Outbound Rules
You'll need to pass through security again on your return journey.
Forgetting About Connections
Connecting itineraries can involve additional security screening.
Packing Toiletries You Won't Use
Long-haul doesn't automatically mean you need larger toiletries.
Think about your accommodation, destination and length of stay.
Forgetting Your Cabin-Bag Dimensions
American's main carry-on limit is 56 × 36 × 23cm, including wheels and handles, while the personal-item limit is 45 × 35 × 20cm.
Travel Minis or Decant Your Own?
Both can work.
Decanting
Reusable bottles allow you to take products you already use at home.
This can be economical and reduce waste, although it requires preparation and poorly sealed bottles can leak.
Individual Travel Minis
Travel-size products let you choose familiar brands without decanting.
They're particularly useful for products such as toothpaste, deodorant and sun cream.
A Pre-Packed Travel Kit
A ready-packed kit prioritises convenience.
Keeping a dedicated travel wash bag means you don't have to rebuild your toiletries every time you fly.
There isn't a universally better approach.
Choose whichever works best for how frequently you travel and how particular you are about the products you use.
American Airlines Cabin Toiletries Checklist
Before leaving home:
Check your UK departure airport's current liquid rules.
Check the security requirements for your return journey.
Keep cabin liquids within 100ml/3.4oz where required.
Remember that toothpaste, creams, gels and sprays can count as liquids.
Keep permitted personal-care aerosols within the cabin-liquid limit.
Pack essential medicines where they're accessible.
Keep your carry-on within 56 × 36 × 23cm.
Keep your personal item within 45 × 35 × 20cm.
Remember that American's bag measurements include handles and wheels.
Check any unusual toiletry or aerosol against American's restricted-items guidance.
Pack for the length and type of trip you're actually taking.
American Airlines Cabin Toiletries Rules FAQs
Can I Take Shampoo on American Airlines?
Yes. Shampoo can be carried in cabin baggage. Keep the container within 3.4oz/100ml under American's published cabin-liquid guidance.
Does Toothpaste Count as a Liquid?
Yes. Treat toothpaste as part of your liquids when passing through airport security.
Can I Take Deodorant on American Airlines?
Yes. American specifically permits aerosol deodorant as a personal-care item, subject to the relevant size restrictions. Roll-on and gel deodorants should also be packed as liquids.
Can I Take Hairspray on American Airlines?
Yes. American specifically lists hairspray as an acceptable personal-care item, subject to its restrictions.
Can I Take Perfume on American Airlines?
Yes. American specifically lists perfume and cologne containing alcohol as permitted personal-care products. For carry-on baggage, keep the container within 3.4oz/100ml.
What Size Is an American Airlines Carry-On Bag?
The maximum carry-on dimensions are 56 × 36 × 23cm (22 × 14 × 9in) including handles and wheels.
Can I Also Take a Personal Item?
Yes. American permits one personal item in addition to your carry-on. It must fit under the seat and measure no more than 45 × 35 × 20cm (18 × 14 × 8in).
Does Basic Economy Still Include a Carry-On Bag?
Yes. American's current Basic Economy information includes one personal item and one carry-on bag within the normal size limits.
Can I Take Toiletries in Checked Baggage?
Yes, many normal personal-care products can travel in checked baggage. American currently limits permitted personal-care items to 70oz total, with no individual container larger than 16 fluid ounces.
More American Airlines Travel Advice
Final Thoughts
American Airlines cabin toiletries rules are straightforward once you separate the airline's baggage allowance from airport-security rules.
American currently permits travel-size personal-care liquids in cabin baggage at 3.4oz/100ml or less. It also permits one main carry-on measuring up to 56 × 36 × 23cm and one personal item up to 45 × 35 × 20cm.
For UK travellers, the extra consideration is that you're likely to encounter different security systems on opposite sides of the Atlantic.
So check your departure, connecting and return airports rather than assuming the procedure you encountered on the outward journey will be identical on the way home.
Pack only the toiletries you'll actually use, keep your everyday liquids travel-sized, and check anything unusual against American's restricted-items guidance before you travel.
That should leave considerably less to worry about when you reach security.
Information reviewed against American Airlines' current published carry-on baggage, restricted-items, personal-care and family-travel guidance, September 2026.
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