There is a version of international travel that involves standing at a baggage carousel in Bangkok, or Lisbon, or Buenos Aires, watching the same suitcases circle past while yours doesn’t appear. Your connecting flight was tight. Your bag did not make the transfer. The airline tells you it will arrive in 24-48 hours, probably, and in the meantime you have the clothes on your back and whatever was in your personal item.
This version of travel is entirely preventable. Everything you need for two weeks anywhere in the world fits in a 40-litre bag that goes under the seat in front of you or in the overhead bin. The discipline of carry-on packing is not about minimalism — it is about control. You control your belongings. You never wait at a carousel. You walk off the plane and into the city.
This list has been tested across Southeast Asia, Europe, Latin America, and East Africa. It works for hot climates, cold climates, and the common situation of both in one trip.
The Bag
The bag itself matters more than people think and less than gear reviewers suggest. You need a bag that fits international carry-on dimensions (55 x 40 x 20-23 cm), opens wide enough to pack and unpack without excavating, and is comfortable to carry for 30 minutes at a stretch. That’s it.
Backpacks (Best for Most International Travel)
- Osprey Farpoint 40 — The default recommendation for a reason. Clamshell opening, padded hip belt that stows away, fits every airline carry-on limit. Around $160. If you are buying one bag for international travel and want to think about it as little as possible, this is the one.
- Aer Travel Pack 3 — More structured, excellent for those who carry a laptop and tech gear. Shoe compartment on the bottom, dedicated laptop sleeve, clean aesthetic that looks appropriate in business settings. 35L, around $250.
- Peak Design Travel Backpack 45L — The premium option, particularly strong for photographers. Expandable from 35L to 45L, excellent internal organization, works with Peak Design’s camera cube system. Around $300.
Rolling Carry-Ons (Best for City-to-City or Business)
- Travelpro Maxlite 5 21” — Lightest quality roller available at around 5.4 lbs. Preferred by flight attendants, which is a meaningful endorsement. Around $170.
- Away Carry-On — Hardshell polycarbonate, TSA-approved lock built in, compression system inside. The built-in battery has been removed from newer models due to airline regulations, which is fine — carry a separate power bank. Around $275.
Clothing: The Capsule System
The principle behind carry-on packing is a capsule wardrobe: a small set of versatile pieces that work together in multiple combinations and cover the range of situations you are likely to encounter. This is not a sacrifice. It is an edit.
Warm Climate (Southeast Asia, Mediterranean, Central America)
| Item | Quantity | Notes |
|---|---|---|
| T-shirts | 3 | Merino wool or synthetic blend. Merino resists odor and dries fast. |
| Lightweight button-down | 1 | Linen or technical fabric. Covers temples, nice restaurants, sun protection. |
| Shorts | 2 | One swim-capable, one smart casual. |
| Lightweight trousers | 1 | For temples, cooler evenings, travel days. |
| Underwear | 5 | Merino or synthetic. ExOfficio Give-N-Go is the standard for travel. |
| Socks | 3 pairs | Merino wool, ankle length. |
| Walking shoes | 1 pair | Worn, not packed. Allbirds, Adidas Ultraboost, or similar. |
| Sandals | 1 pair | Worn to the airport or clipped to bag. Birkenstocks or Chacos. |
Cold Climate (Northern Europe, Patagonia, Japan in Winter)
The key to cold-climate carry-on packing is layering, not bulk. A packable down jacket compresses to the size of a water bottle. A merino base layer weighs almost nothing. Three thin layers worn together are warmer than one thick coat and pack to a fraction of the volume.
| Item | Quantity | Notes |
|---|---|---|
| Merino base layer top | 1 | Worn under other layers on cold days. Smartwool 250 or Icebreaker. |
| T-shirts | 2 | Merino wool. Double as mid-layers. |
| Flannel or long-sleeve shirt | 1 | Works alone or over a base layer. |
| Packable down jacket | 1 | Uniqlo Ultra Light Down at $80 is the best value in travel gear. Compresses to a pouch the size of a fist. |
| Waterproof shell jacket | 1 | Worn on travel days. Doesn’t need to be expensive — a $60-80 shell from Columbia or Marmot works. |
| Trousers | 2 | One heavier (jeans or wool blend), one lighter. |
| Warm hat and gloves | 1 each | Merino. Tiny packed, essential worn. |
| Walking boots | 1 pair | Worn to the airport. Break them in before the trip. |
Multi-Climate Trips
Most international trips involve some climate variation — cool mornings in highlands, hot afternoons in cities, air-conditioned trains. The answer is the warm-climate list plus a packable down jacket and a lightweight rain shell. These two layers, combined with a merino base layer, cover temperatures from 5°C to 35°C.
Packing Cubes: The Organizing Principle
Packing cubes turn a 40-litre bag from a laundry pile into a filing system. They do not create more space — that is a marketing claim. They create order, which makes a small bag feel manageable.
The setup:
- Large cube: All tops (T-shirts, shirts, layers, folded flat)
- Medium cube: Bottoms (trousers, shorts)
- Small cube: Underwear and socks
- Compression sack: Down jacket, puffy layers
Eagle Creek Specter Cubes are the lightest option at around $15-25 per cube. The compression versions squeeze about 30% more into each cube, which matters in a 35-40L bag.
Toiletries: The International Kit
The rule for international travel toiletries: bring what you cannot buy at your destination, and only in sizes that comply with airline liquid rules (100ml/3.4oz per container).
Bring:
- Toothbrush and travel-size toothpaste
- Deodorant (solid or travel size)
- Sunscreen SPF 50 (100ml bottle — refill from full-size before each trip)
- Prescription medications (in original pharmacy containers, with a copy of the prescription)
- Any specialist skincare you rely on
- Ibuprofen and antihistamines
- Insect repellent (for tropical destinations — DEET-based, 100ml)
Don’t bring:
- Full-size shampoo and conditioner — hotels provide these; pharmacies exist everywhere
- Razors — buy disposables locally or pack a safety razor with blades in checked luggage
- Hairdryer — accommodation provides one; leave yours at home
The container: A clear quart-sized zip-lock bag for flights. A small Muji hanging toiletry bag for the trip itself — lightweight, hangs from a bathroom hook, packs flat when empty.
Tech Gear
International travel has specific tech needs: adapting to different power standards, staying connected without ruinous roaming charges, and keeping devices charged through long travel days.
The Essentials
- Universal travel adapter — One adapter that covers US, EU, UK, and AU/NZ plug types. Do not bring a bag of individual adapters. A single universal adapter with USB-C and USB-A ports replaces four adapters and a separate charger. Around $25.
- Anker 20,000mAh power bank — Long flights, train journeys, and full days out drain your phone. A 20,000mAh bank charges a phone 4-5 times and fits in a jacket pocket. Must go in carry-on, not checked luggage (airline lithium battery rules). Around $40.
- USB-C cable (2x) — One for your phone, one as backup. If your phone and laptop both use USB-C, one cable type handles everything.
- Noise-cancelling headphones — The difference between a miserable 12-hour flight and a tolerable one. Sony WH-1000XM5 or Apple AirPods Pro for a more compact option.
Connectivity
- eSIM or local SIM — International roaming from US carriers costs $10/day. An eSIM from Airalo or Holafly costs $10-25 for 10GB over 30 days and works across multiple countries. Buy and install before you leave. If your phone doesn’t support eSIM, buy a local SIM at the airport on arrival — every international airport has SIM vendors.
- Offline maps — Download Google Maps offline for every country you are visiting. This works without data and has saved more travelers from being lost than any other single app.
Documents and Money
Documents (Both Digital and Physical)
- Passport (valid for at least 6 months beyond your return date — many countries enforce this)
- Visa documents (printed and saved on phone)
- Travel insurance policy number and emergency contact (printed card in wallet)
- Copies of passport, insurance, and itinerary emailed to yourself and a trusted contact
- Vaccination records if required (yellow fever certificate for parts of Africa and South America)
Money
- Two debit/credit cards from different banks (if one is compromised or blocked, you have a backup)
- A card with no foreign transaction fees (Wise, Revolut, Charles Schwab debit, or a travel credit card)
- Small amount of destination currency in cash — $50-100 equivalent, for the taxi or bus from the airport if ATMs are inaccessible on arrival
The Complete Packing Checklist
In the Bag
- 3-5 tops (climate dependent)
- 2 bottoms
- 5 underwear
- 3 pairs socks
- 1 mid-layer (fleece, sweater, or down jacket)
- 1 rain shell or windbreaker
- Packing cubes (3-4)
- Toiletry bag with 100ml containers
- Tech kit (adapter, power bank, cables, headphones)
- Documents folder (passport, insurance, copies)
- 1 packable day bag — a Matador Freerain24 or similar ultralight daypack that stuffs into its own pocket, for day trips from your base
Worn on Travel Days
- Walking shoes or boots
- Heaviest trousers
- Heaviest top layer
- Watch
- Crossbody bag or money belt for passport and cards
Not on This List (Intentionally)
- Jeans (heavy, slow to dry — one pair maximum, worn not packed)
- A “nice outfit” beyond what the capsule wardrobe covers
- Books (use a Kindle or your phone)
- More than one pair of shoes beyond what you’re wearing
- Anything you have not used on your last three trips
Packing for Specific Situations
Temples and Religious Sites (Southeast Asia, Middle East)
Many temples require covered shoulders and knees. The lightweight button-down shirt and one pair of trousers solve this. Women should carry a lightweight scarf that can cover shoulders — it doubles as a blanket on cold buses and airplanes.
Overnight Trains and Buses
A silk sleep liner weighs almost nothing and makes sleeper trains and overnight buses more hygienic and comfortable. Our Europe night trains guide covers what to expect on overnight rail services. A small inflatable travel pillow and earplugs complete the overnight kit.
Beach Destinations
Replace one pair of shorts with swim trunks that double as casual shorts (board shorts with a flat front work for both). A quick-dry microfiber towel takes up a fraction of the space of a cotton towel and dries in an hour.
Doing Laundry on the Road
The assumption behind this packing list: you will do laundry once during a two-week trip. This is not an inconvenience — it is a 90-minute errand that halves the amount of clothing you need to carry.
Options:
- Laundromats (self-service): available in most cities worldwide. €4-8 per wash cycle.
- Hotel laundry services: usually overpriced (€3-5 per item), but some budget hotels offer a flat rate for a bag.
- Hand-washing: merino wool and synthetic fabrics can be washed in a sink with a dab of soap and hung to dry overnight. A Scrubba wash bag makes this easier but isn’t strictly necessary.
For our Europe-specific packing advice, including train overhead rack dimensions and bag recommendations calibrated for European rail travel, see our carry-on Europe guide. If you’re planning your first rail trip, our train travel packing list covers the specifics of what to bring on trains.
The Weight Check
Before you close the bag, weigh it. Most international airlines allow 7-10 kg for carry-on luggage. Some budget airlines (Ryanair, AirAsia) enforce this at the gate with scales. If your bag is over 8 kg, you have packed too much. Remove items until it is under 8 kg and you will be fine on any airline worldwide.
The goal is not to see how little you can bring. The goal is to bring exactly what you need and nothing more — to arrive at any destination in the world with everything on your back, no baggage claim, no waiting, no worrying about lost luggage. That freedom is worth the discipline of packing light.