Carry-on packing checklists for every trip: domestic, international, budget & medical

Mastering one-bag travel requires adhering to four regulatory principles: 1) The 100 ml Rule: Every liquid container must be labeled 100 ml (3.4 oz) or less and fit in one clear quart bag. 2) Cabin-Only Batteries: All loose lithium power banks must travel in your carry-on, never checked. 3) The Under-Seat Baseline: Pack high-value electronics and medications in your personal item in case of forced overhead gate checks. 4) Weight Buffer: Maintain at least 1.5 kg (3.3 lbs) of margin below international carrier weight limits.

Designed for 22 x 14 x 9 in domestic flights on American, Delta, United, and Southwest:

• Clothing: 3 shirts, 1 pair pants/jeans, 1 versatile layer (merino sweater or jacket), 3 pairs socks/underwear, 1 sleep set.
• Toiletries: Solid deodorant stick, 100 ml travel toothpaste, toothbrush, travel sunscreen, mini comb.
• Electronics: Smartphone, 10,000 mAh power bank (≤37 Wh), GaN multi-port USB-C wall charger, 2 USB-C cables.
• Documents: REAL ID driver’s license or passport, digital boarding passes, airline app loaded offline.

Engineered to comply with the stricter international 55 x 35 x 20 cm dimensions and 7–10 kg weight restrictions:

• Capsule Wardrobe: 5 lightweight merino or synthetic tops, 2 bottoms, 1 packable rain shell, 7 anti-microbial underwear sets, 5 sock pairs.
• Grooming: Quart clear bag with 100 ml decanted bottles, solid shampoo bar, travel razor, lip balm.
• Tech & Power: Universal international plug adapter, 20,000 mAh power bank (≤74 Wh) with clear Wh rating label, noise-canceling headphones, e-reader.
• Border Documents: Valid passport (with 6+ months validity), international driving permit, proof of onward travel, physical paper copies of travel insurance.

Optimized for free personal-item allowances on Ryanair, EasyJet, Spirit, and Frontier (18 x 14 x 8 in / 45 x 35 x 20 cm):

• Pack: 25L to 30L frameless travel backpack with exterior cinch straps.
• Clothing: Wear your bulkiest jacket, shoes, and sweater on the plane. Pack 2 spare lightweight shirts, 1 spare pants, 2 underwear/socks in ultra-light compression cubes.
• Grooming: Minimalist solids only: mini toothbrush, solid toothpaste tabs, travel face wipes.
• Electronics: Phone, compact 5,000 mAh magnetic battery, slim single-port wall plug.

Protected under 14 CFR Part 382 and international civil aviation accessibility protocols:

• Assistive Hardware: CPAP machine in manufacturer carrying case with FAA RTCA/DO-160 compliance label intact; spare mask and tubing.
• Power Supply: Medical battery pack verified under 160 Wh with airline approval documentation for international itineraries.
• Pharmaceuticals: Original pharmacy-labeled prescription containers, written physician travel letter detailing generic drug names, declared cooling pack for biologics/insulin.

Before zipping your luggage, run our 60-second verification: 1) Verify zero loose spare lithium batteries in checked bags; 2) Confirm every liquid bottle is ≤100 ml with manufacturer markings intact; 3) Weigh your packed bag using a digital luggage scale; and 4) Drop your bag into our interactive Airline Bag Sizer Tool to guarantee compliance with your specific flight carrier.