What are the TSA rules for liquids in carry-on bags?

TSA's 3-1-1 rule: each liquid, gel, cream, or aerosol must be in a container of 3.4 oz (100ml) or less, all containers must fit in one 1-quart clear zip-lock bag, and you're limited to one such bag per passenger. Solid toiletries (deodorant sticks, bar soap, solid shampoo bars) do not count as liquids and are not restricted.

Can I bring a power bank in my carry-on?

Yes — power banks (portable chargers) must go in your carry-on, never in checked luggage. The TSA and IATA limit is 100Wh (approximately 27,000mAh at 3.7V) without airline approval. Many airlines allow up to 160Wh with prior approval. Lithium-ion cells are a fire risk if crushed in the cargo hold, which is why they must stay in the cabin.

Travel Packing Checklist (2026)

A practical carry-on-focused checklist covering documents, electronics, toiletries, and clothing — with TSA rules and packing tips built in.

Documents & Essentials

Passport (check expiry — many countries require 6+ months validity beyond your return date)
Boarding passes (downloaded offline in case of poor Wi-Fi)
Travel insurance documents and emergency contact card
Credit cards — notify your bank before international travel
Local currency (small amount for arrival) or a no-fee travel card
Hotel/Airbnb confirmation and address (printed or downloaded)
Visa documentation if required (check entry requirements before travel)

Electronics

Phone + charger cable
Universal travel adapter (for international trips)
Power bank — must go in carry-on, not checked bag. Max 100Wh (27,000mAh at 3.7V) per TSA/IATA rules without airline approval
Noise-cancelling headphones — worth it on any flight over 3 hours
Laptop/tablet + charger (check size before buying carry-on bag)
E-reader (saves weight vs books for long trips)

Toiletries (TSA 3-1-1 Rule)

Each liquid, gel, or aerosol must be in containers of 3.4 oz (100ml) or less, all fitting in one 1-quart clear zip-lock bag per passenger.

Toothbrush & toothpaste (travel size)
Deodorant (solid deodorant bypasses the 3-1-1 rule; liquid/gel must be 3.4 oz)
Shampoo/conditioner (travel size, or buy on arrival for trips 5+ days)
Sunscreen (liquid — must be 3.4 oz in carry-on)
Prescription medications — keep in original labeled containers; bring doctor's note for controlled substances internationally
Contact lenses + solution (solution counts as liquid; 3.4 oz limit)

Clothing (Carry-On Friendly)

Pack based on the "3-4-3" rule for a week trip: 3 bottoms, 4 tops, 3 pairs of socks/underwear (plus one outfit on your body)
Wear your heaviest/bulkiest shoes on the plane to save bag space
Layer for the aircraft — cabins are cold at cruise altitude even in summer
Compression packing cubes reduce volume by 20–30%

What to Leave at Home

Full-size toiletry bottles (buy travel sizes or at destination)
Books (bring e-reader instead)
Hair dryer (hotels always have them)
Excess shoes — limit to 2–3 pairs maximum
Valuable jewelry or items you'd be devastated to lose