Travel Security & Baggage Rules Compared (2026)
Stop guessing which rules apply. We compare airport security authorities, airline baggage allowances, liquid volume thresholds, and customs regulations side-by-side using verified 2026 primary sources.
Airline vs Airline
Carry-on dimensions, overhead bin limits, baggage fee structures, and airline battery policies.
Delta vs United Baggage: Carry-On Size & Fees (2026)
Delta and United share 22×14×9 in carry-on dimensions, but Delta includes carry-on for Basic Economy while United restricts it. Review 2026 rules.
Southwest vs United Baggage: Size, Fees & Free Bags (2026)
Southwest offers 2 free checked bags and larger 24×16×10 in carry-ons, while United charges per bag and restricts Basic Economy. Review 2026 rules.
Air Canada vs WestJet Baggage: Size, Fees & Carry-On (2026)
Air Canada carry-on limit is 21.5×15.5×9 in while WestJet is 22×14×9 in. Compare Canadian baggage fees and allowances verified for 2026 flights.
Specifications & Quantities
Watt-hour thresholds (20k vs 27k mAh), container capacity limits (100ml vs 150ml), and powder rules.
20,000 vs 27,000 mAh Power Bank: TSA Wh Rules (2026)
20,000 mAh (74 Wh) and 27,000 mAh (99.9 Wh) power banks both pass TSA under the 100 Wh carry-on limit, but 30,000 mAh requires approval. Compare rules.
100ml vs 150ml Liquid Containers: TSA Rules (2026)
100 ml (3.4 oz) containers are permitted in carry-on bags, but 150 ml containers are confiscated even if half-empty. Review TSA liquid rules.
Carry-On vs Checked Baggage
Placement rules for lithium batteries, liquids, medication, electronics, and valuable items.
Batteries in Carry-On vs Checked Bags: TSA Rules (2026)
Lithium power banks and spare batteries are mandatory in carry-on bags and strictly banned in checked luggage. Compare FAA & TSA placement rules.
Liquids: Carry-On vs Checked Baggage Rules (2026)
Carry-on liquids are capped at 100 ml (3.4 oz) in a quart bag, while checked bags allow full-size bottles with zero volume limit. Review rules.
Security vs Airline vs Customs
Navigating multi-boundary conflicts between departure security screening, airline contracts, and border customs.
Airport Security vs Airline Baggage Differences (2026)
TSA checks safety hazards, while airlines enforce size, weight, and fare limits. Passing TSA does not mean your airline will accept your bag.
Airport Security vs Customs Rules: What Differs (2026)
Security screens for flight hazards, while customs regulates dutiable goods, agricultural products, and currency. Review the dual-boundary rules.
Country Customs Allowances
Duty-free currency exemptions, alcohol and tobacco thresholds, and prohibited goods across destinations.
US vs Canada Customs: Duty-Free & Alcohol Limits (2026)
US grants $800 exemption and 1L alcohol, while Canada tiers exemptions (CAD $200-$800) with 1.5L wine. Compare cross-border customs rules.
US vs Mexico Customs: Laptop & Baggage Allowances (2026)
Mexico restricts travelers to 1 portable computer without 19% tax, while the US has no laptop limit. Compare duty-free entry allowances.
Item vs Item Decisions
Resolving real either/or packing choices (disposable vs safety razors, power banks vs spare cells, aerosols vs solids).
Disposable vs Safety Razor: TSA Carry-On Rules (2026)
Disposable and cartridge razors are allowed in carry-on bags, but safety razor blades are banned. Compare TSA razor screening rules.
Power Bank vs Spare Battery: Flight & Wh Limits (2026)
Power banks and loose lithium batteries are both carry-on only and banned in checked bags, but loose cells require terminal taping. Compare rules.
Aerosol vs Solid Deodorant: TSA Carry-On Rules (2026)
Aerosol spray deodorant is capped at 100 ml (3.4 oz) in your quart bag, while solid stick deodorant is exempt with zero volume limit. Compare rules.
Verified Single-Source-of-Truth Data
Every comparison cell on CanICarryIt.com is rendered from canonical government screening orders (TSA, CATSA, FAA, UK DfT, EU EASA), official carrier contracts of carriage, and national customs statutes. Airline baggage fees and dimensions are verified snapshots and may vary by ticket class and departure airport.