Can I Fly With This?
🇺🇸
US carry-on rules (TSA) — what you can and can't bring
Authority: TSA
The Transportation Security Administration (TSA) sets carry-on and checked-bag rules for every US domestic and international departure. The headline rules: liquids in carry-on follow the 3-1-1 rule (containers ≤ 100 ml / 3.4 oz, fitting in a single 1-quart bag), spare lithium batteries must go in carry-on (not checked) up to 100 Wh without approval, and sharp objects with blades over 6 cm are checked-only.
49
Allowed in carry-on
43
With limits
24
Not allowed
The 5 things you need to know
- Liquids in carry-on: 100 ml / 3.4 oz per container, all fitting in one 1-quart bag (3-1-1 rule).
- Lithium batteries up to 100 Wh: unlimited in carry-on. 100–160 Wh: max 2 spares, airline approval required.
- Sharp objects over 6 cm blade: checked bag only. Razors with replaceable blades: checked only.
- Medication, baby formula and breast milk are exempt from the 100 ml rule — declare at the checkpoint.
- Firearms permitted in checked baggage only, unloaded and in a locked hard-sided container.
Every item we cover for United States (116)
Electronics & batteries
Liquids & gels
Other
Pets & animals
Sharp objects
Smoking & tobacco
Sports & outdoor
Major airlines in United States
⚠️ Rules vary by airport, airline and route. This page summarises common guidance from TSA — always confirm with your specific airline before flying, especially for international travel.
✨ Plan a full packing list for your trip
Monthly travel digest
One short email a month — carry-on rule changes, smart packing tips, and travel notes worth knowing. Plus immediate alerts when major rules change.
No spam. Unsubscribe anytime. We never share your email.