Guide
In-depth guides written from primary TSA, CATSA, FAA, and international aviation sources.
The 3-1-1 Liquids Rule, Explained What counts as a liquid, exceptions, and packing strategies. Batteries & Power Banks on Planes Why lithium goes in the cabin, never the hold — and how to read the Wh limit. Flying with Medication Liquid exemptions, cooling packs, controlled drugs, and checkpoint declarations. What Food Can You Bring on a Plane? Solid food vs liquids, spreads, and international border agricultural declarations. How Much Cash Can You Carry on a Flight? No domestic limit; the $10,000 international declaration rule. Can You Bring a Vape on a Plane? Cabin only, never checked — plus charging and onboard use prohibitions. Forced Gate-Checks & Lithium Battery Rules Why lithium power banks cannot fly in cargo and the 2-bag defensive packing strategy. Duty-Free Liquids & Connecting Flights The 48-hour STEB rule, optical Raman bottle scanner traps, and security re-screening. TSA vs CATSA: Security Differences Powder rules, pepper spray, cannabis, and verified cross-border differences. Aerosols on a Plane: TSA & FAA Rules Cabin 3.4 oz rules vs FAA checked quantity caps for spray cans.