Pack items you need during the flight and when ready after landing
Your carry-on bag should hold anything you cannot afford to lose if your checked luggage is delayed or sent to the wrong airport. That means medications, glasses, phone chargers, a change of clothes, toiletries you use daily, and documents like your ID and boarding pass. The TSA allows one personal item (purse, backpack, laptop bag) plus one carry-on roller bag on most flights, though some airlines reduce this to one bag total, so check your airline's rules before packing.
The goal is not to pack everything—it is to pack what you need between takeoff and the moment you retrieve your checked bag at your destination. If your bag is delayed 24 hours, you should have enough to get through that day without panic.
Key Takeaways
- Pack medications, glasses, hearing aids, and any medical device in your carry-on, never in checked luggage, because you need them when ready if your checked bag is delayed.
- Bring one complete outfit plus underwear and socks, because checked luggage can arrive a day late and you may need to change clothes before then.
- Keep your phone charger, ID, boarding pass, and any documents you need to show at the airport in your personal item, not your roller bag.
- Liquids, gels, and aerosols must follow the 3.4-ounce (100 ml) rule per container and fit in a single quart-sized clear bag, which you remove at security.
- Leave sharp objects, lighters, and large tools in checked luggage or at home, because they are prohibited in the cabin.
Medications, glasses, and medical devices always go in carry-on
Pack any prescription medication in its original labeled bottle with your name on it. The TSA allows medications in any form—pills, liquids, inhalers, insulin pens, EpiPens—in your carry-on bag without counting toward your liquid limit. If you take medication multiple times a day, bring enough for the entire trip plus a few extra doses in case your return is delayed.
Include glasses, contact lenses, hearing aids, and any device you depend on to function. If you wear glasses and your bag is delayed, you cannot see. If you use an inhaler and it is in your checked bag, you cannot breathe. These items are too critical to risk. Keep them in your personal item or in an easily accessible pocket of your carry-on.
If you carry a medical device like a CPAP machine, glucose monitor, or EpiPen auto-injector, it travels in your carry-on. You do not need to declare it at security, but having a doctor's letter explaining the device can speed things up if TSA asks questions.
Pack one complete outfit plus a change of underwear and socks
Bring at least one full outfit—shirt, pants or skirt, underwear, socks—that you can wear when ready if your checked bag does not arrive when you land. This is not about fashion; it is about not being stranded in the same clothes for 24 hours while waiting for your luggage. If you are traveling for more than three days, add a second shirt and another pair of pants so you have options.
Pack these clothes in a way that makes them straightforward to find. Do not stuff them at the bottom of your roller bag under everything else. Put them in a small packing cube or a separate compartment so you can grab them quickly if needed. Choose clothes that work in the climate where you are landing—if you are flying to a cold place, pack a warm layer; if you are going somewhere hot, pack something light.
Include comfortable shoes you can wear when ready. If you are wearing dress shoes on the plane and your luggage is delayed, you may not want to walk around the airport in them for hours. Pack slip-on shoes or sneakers that you can put on quickly.
Toiletries and personal care items follow the liquid rule
The TSA's 3-1-1 rule means each liquid, gel, or aerosol container can hold no more than 3.4 ounces (100 milliliters). All containers must fit inside a single quart-sized clear plastic bag. You remove this bag at security and place it in the bin with your shoes and electronics. Liquids include toothpaste, shampoo, conditioner, lotion, sunscreen, deodorant, perfume, and liquid foundation.
Pack a small travel-size toothbrush and toothpaste so you can brush your teeth after landing or during a long layover. Bring any daily-use skincare products in travel sizes—a 3.4-ounce bottle of moisturizer or cleanser is enough for several days. If you wear makeup, pack what you use most: foundation, concealer, mascara, and lipstick take up little space.
Solid items like deodorant sticks, solid perfume, and lip balm do not count as liquids and can travel in any amount. Powders like loose eyeshadow or setting powder are also allowed in any quantity. If you are unsure whether something counts as a liquid, the TSA website has a searchable "What Can I Bring?" tool.
Keep documents and essentials in your personal item
Your personal item—a purse, small backpack, or crossbody bag—should hold everything you need to access during the flight and at the airport. This includes your ID, boarding pass (printed or on your phone), passport if you are traveling internationally, and any documents the airline asked you to bring (like a vaccine card or travel authorization). Keep these in an straightforward-to-reach pocket so you do not have to dig through your entire bag at security or the gate.
Pack your phone charger and a portable battery in your personal item. You will use your phone to show your boarding pass, take photos, and navigate the airport. A dead phone is a major problem. If you have a laptop, tablet, or other electronics, keep them in your personal item too—you will need to remove them at security anyway, and they are easier to access from a smaller bag.
Include headphones, a book or e-reader, and any entertainment you want during the flight. Bring a reusable water bottle (empty, so it passes security) that you can fill at a water fountain after you clear the checkpoint. Pack gum or mints if you like them—they help with ear pressure during takeoff and landing.
Items that are prohibited or restricted in carry-on luggage
Sharp objects like knives, razors, and box cutters must go in checked luggage. Lighters and flammable items are prohibited entirely—you cannot pack them in carry-on or checked bags. Tools larger than 7 inches (like hammers, wrenches, or screwdrivers) go in checked luggage. Sports equipment like baseball bats, golf clubs, and ski poles also travels in checked bags.
Liquids larger than 3.4 ounces cannot travel in carry-on, even if they fit in your quart bag. This includes full-size bottles of shampoo, lotion, or cologne. Pack these in your checked bag instead. Aerosol cans like spray deodorant or hairspray are limited to one 18-ounce container per passenger in carry-on, and it must have a safety cap.
Gel shoe inserts, certain types of batteries, and some medical devices have specific rules. If you are unsure about a particular item, check the TSA website or call your airline before you pack. It is faster to leave something at home than to have it confiscated at security.
Packing strategy: use small bags and cubes to stay organized
Packing cubes or small zippered bags help you fit more into your carry-on and make items straightforward to find. Put your outfit in one cube, toiletries in another, and socks and underwear in a third. This way, if you need to pull something out quickly, you know exactly where it is. Compression cubes can reduce the volume of soft items like clothes by about 30 percent.
Roll your clothes instead of folding them—rolling takes up less space and creates fewer wrinkles. Place heavier items like shoes at the bottom of your roller bag and lighter items on top. Keep your personal item light enough that you can comfortably carry it for 30 minutes without strain, because you will be holding it while you navigate the airport.
Wear your bulkiest item—a heavy jacket or boots—on the plane instead of packing it. This saves space in your bag and keeps you warm during the flight. If you are worried about spilling something on yourself during the flight, pack a small stain remover pen in your personal item.
Frequently Asked Questions
Can I pack a full-size bottle of shampoo if I check my luggage?
Yes. The 3.4-ounce limit applies only to carry-on bags. You can pack full-size bottles of shampoo, lotion, sunscreen, and other liquids in your checked bag with no restrictions. Just make sure the bottles are sealed and consider putting them in a plastic bag in case they leak during handling.
What if I need to bring more than one outfit?
Pack additional outfits in your checked bag. Your carry-on should have one complete outfit for emergencies. If you are traveling for a week or longer, you will need checked luggage anyway, so pack the rest of your clothes there. Bring only what you absolutely need in your carry-on to keep it light and within size limits.
Can I bring a phone charger and laptop in my carry-on?
Yes. Chargers, cables, and laptops are allowed in carry-on bags. You will need to remove your laptop at security and place it in a bin, but you can put it back in your bag after you pass through the scanner. Keep your charger in your personal item so you can access it easily during the flight.
Do I need to pack a change of clothes if I am only flying for a few hours?
Not necessarily, but it is still a good idea. Even a short flight can be delayed, and checked luggage can be lost. If you are flying across the country or internationally, pack at least one outfit. For a short regional flight, you can skip it if you are confident your luggage will arrive on time, but you take on the risk.
Can I bring a razor in my carry-on?
No. Razors with exposed blades are prohibited in carry-on bags. You can pack them in checked luggage. Electric razors are allowed in carry-on bags. If you need to shave during your trip, pack an electric razor or wait until you reach your destination and buy a disposable razor there.