CanICarryIt.com — Guides & ToolsHand-verified carry-on rules, guides and free tools for US & Canadian travelers.https://canicarryit.com/2026-07-31T00:00:00ZAerosols on a Plane: TSA 3-1-1 + FAA Checked Capshttps://canicarryit.com/guides/aerosols-on-a-plane2026-07-30T00:00:00Z2026-07-30T00:00:00ZSpray cans fly under two rulebooks: 3.4 oz in the cabin, FAA’s 18 oz / 70 oz caps in checked — and flammable sprays like cooking spray are banned outright.TSA vs CATSA: The Rules That Change at the Borderhttps://canicarryit.com/guides/us-canada-security-differences2026-07-30T00:00:00Z2026-07-30T00:00:00ZThe liquids rule is identical — bowling balls, powder caps, eye drops, pepper spray and cannabis are not. Every verified divergence in one table.Vaping on a Plane: Carry-On Rules, Bans & Fineshttps://canicarryit.com/guides/vaping-on-a-plane2026-07-30T00:00:00Z2026-07-30T00:00:00ZCarry-on only, never checked — packing steps, the on-board use and charging bans, and countries where vapes are illegal.What Food Can You Bring on a Plane?https://canicarryit.com/guides/food-on-a-plane2026-07-30T00:00:00Z2026-07-30T00:00:00ZSolid food flies free, spreads are liquids — plus the international customs trap that actually costs you money.How Much Cash Can You Carry on a Flight?https://canicarryit.com/guides/cash-on-a-flight2026-07-30T00:00:00Z2026-07-30T00:00:00ZNo limit domestically; the $10,000 declaration rule internationally — and how to fly with large sums safely.The 3-1-1 Liquids Rule, Explainedhttps://canicarryit.com/guides/liquids-3-1-1-rule2026-07-30T00:00:00Z2026-07-30T00:00:00ZWhat counts as a liquid, the exceptions nobody tells you about, and how to fit a week of toiletries in one bag.Batteries & Power Banks on Planeshttps://canicarryit.com/guides/batteries-power-banks-on-planes2026-07-30T00:00:00Z2026-07-30T00:00:00ZWhy lithium goes in the cabin, never the hold — and how to read the Wh limit on any label.Flying with Medicationhttps://canicarryit.com/guides/medication-on-planes2026-07-30T00:00:00Z2026-07-30T00:00:00ZLiquid exemptions, cooling packs, controlled drugs, and what to say at the checkpoint.Item Checker — item × airline × route × fare verdictshttps://canicarryit.com/tools/item-checker2026-07-31T00:00:00Z2026-07-31T00:00:00ZYes/no is the wrong answer. Five inputs, one structured verdict with limits, exceptions and sources.Bag Sizer — will your carry-on fit your airline?https://canicarryit.com/tools/bag-sizer2026-07-31T00:00:00Z2026-07-31T00:00:00ZEnter your bag’s dimensions and compare against every airline sizer box we track.New: Creatine / Protein Powder ruleshttps://canicarryit.com/can-i-bring/creatine2026-07-31T00:00:00Z2026-07-31T00:00:00ZThe 12 oz / 350 ml powder-screening threshold, Canada’s 350 ml/g cap, and how to pack tubs versus scoops.