What size is a carry-on bag?

The most common carry-on limit is 22×14×9 inches (56×36×23 cm) for US airlines like Delta, United, and American — measured including wheels and handles. Southwest allows more space (24×16×10 in). European budget airlines are significantly stricter: Ryanair allows 40×20×25 cm (free cabin bag), easyJet 45×36×20 cm, and Wizz Air 40×30×20 cm. Always verify with your specific airline — limits change and budget airlines enforce them at the gate.

Can I bring a personal item AND a carry-on?

Yes. Most airlines allow one carry-on (overhead bin) plus one personal item (under the seat). A personal item is typically a backpack, laptop bag, or purse — usually max 18×14×8 inches. Some budget airlines (Ryanair basic fare, Frontier, Spirit) charge for overhead bin access — your carry-on on these airlines may only mean the under-seat personal item unless you pay extra.

What liquids can you bring on a plane?

Under the TSA 3-1-1 rule: each container must be 100ml (3.4oz) or less, all containers fit in one 1-litre clear bag, one bag per person. Liquids include: water, shampoo, conditioner, sunscreen, lotion, toothpaste, perfume, and contact lens solution. Not liquids (exempt from the rule): solid shampoo bars, solid deodorant, toothpaste tablets, sunscreen sticks, and food items.

Can you really pack for 2 weeks in a carry-on?

Yes — the key is merino wool clothing that can be worn 2–3 days between washes, doing laundry once mid-trip (available nearly everywhere for $3–15), and solid toiletries. Most travelers overpack by 40–50% for trips under 2 weeks. Five versatile mix-and-match items create more outfit combinations than 14 separate outfits that don't work together. If your destination has laundry access (hostels, Airbnbs, coin laundromats), 2 weeks in a carry-on is entirely realistic.

Does a backpack count as a carry-on or personal item?

It depends on size. A small backpack (under 18×14×8 in) counts as a personal item and goes under the seat. A larger travel backpack (22×14×9 in range) counts as a carry-on and goes in the overhead bin. Most 40L travel backpacks are designed as carry-on size. If you have both a laptop backpack and a 40L travel backpack, the laptop bag is the personal item and the 40L is the carry-on.

What size carry-on fits ALL airlines?

40×30×20 cm (16×12×8 inches) fits every airline worldwide including Ryanair's strictest "small bag" rules. For US domestic, 56×36×23 cm (22×14×9 inches) is standard. If you fly budget European airlines regularly, invest in a bag that meets 40×20×25 cm — Ryanair's free personal item limit.

How do I do laundry while traveling carry-on only?

Sink-wash: pack a universal sink plug and travel detergent sheets (flat-pack, no liquid). Laundromats: available in every major city ($3-8 per load). Hotel laundry: expensive (skip this). Merino wool: can be worn 2-3 days, air-dries overnight.

Are packing cubes worth it?

Yes — compression packing cubes save 20-30% space and keep your bag organized. The compression type (with a second zipper to squeeze air out) work best. Get a set of 3-4 in different sizes. They also make repacking at each destination much faster.

Carry-On Packing List: 1 Week in One Bag (2026)

What Should I Pack for Carry-On Only Travel?

A carry-on bag must fit 22×14×9 inches (56×36×23 cm) for most US airlines — including wheels and handles. The key to carry-on only travel is three strategies working together: merino wool clothing that can be worn 2–3 days between washes, solid toiletries that bypass the TSA 3-1-1 liquid rule, and packing cubes that compress clothing by 20–30%. Most travelers who switch to carry-on only report packing the same items they used to check — they just pack them smarter. TripPack's packing list generator automatically filters your list for carry-on constraints based on your destination and trip length.

✅ The carry-on advantage: Skipping checked bags saves $35–$75 per flight on most US carriers, eliminates lost luggage risk, and cuts 30–45 minutes off every trip through baggage claim. On a 4-flight trip, that's $140–$300 saved and 2–3 hours back.

What Are the Airline Carry-On Size Limits in 2026?

Airline carry-on limits vary significantly — especially between US full-service carriers and European budget airlines. Always check your specific airline before flying.

Airline Carry-On Size Limits (2026)
Airline	Carry-On Size (L×W×H)	Weight Limit	Notes
Delta	22×14×9 in (56×36×23 cm)	No limit	Must fit overhead bin
United	22×14×9 in (56×36×23 cm)	No limit	Must fit overhead bin
American Airlines	22×14×9 in (56×36×23 cm)	No limit	Must fit overhead bin
Southwest	24×16×10 in (61×41×25 cm)	No limit	Largest US carry-on allowance
JetBlue	22×14×9 in (56×36×23 cm)	No limit	Must fit overhead bin
British Airways	22×17.7×9.8 in (56×45×25 cm)	No stated limit	Generous limit, enforced
Lufthansa	21.7×15.7×9.1 in (55×40×23 cm)	17.6 lb (8 kg)	Weight enforced strictly
Ryanair	15.7×11.8×9.8 in (40×20×25 cm)	22 lb (10 kg)	Small cabin bag only (free); larger bag = fee (Priority: up to 55×40×20 cm — paid add-on)
easyJet	17.7×14.2×7.9 in (45×36×20 cm)	No limit	Small bag (under seat, all fares free); larger cabin bag requires Hands-Free or FLEXI fare or paid add-on
Wizz Air	15.7×11.8×7.9 in (40×30×20 cm)	22 lb (10 kg)	Strictest European budget limit
ANA (Japan)	21.7×15.7×9.1 in (55×40×23 cm)	22 lb (10 kg)	Weight strictly enforced
Singapore Airlines	21.7×14.2×9.1 in (55×36×23 cm)	15.4 lb (7 kg)	Lightest weight limit — pack carefully

⚠️ Limits are subject to change. Always verify on your airline's website before flying. Budget airline rules are enforced at the gate — a bag that boards free on Delta may be charged on Ryanair.

⚠️ Southwest vs Ryanair: Southwest allows 24×16×10 in — that's 40% more space than United and nearly 3× the volume of Ryanair's free cabin bag. If you're flying both carriers on the same trip, pack to the most restrictive limit (Ryanair).

How to Pack Carry-On Only: The 5-Step Method

Choose a compliant bag (measure including wheels and handles)
The most versatile carry-on size is 22×14×9 in — it passes all US carriers and most international airlines. Soft-sided bags are better than hard-shell: they compress slightly to fit into tight overhead bins, and airport staff are less likely to gate-check them. Backpacks and duffel bags often have more usable volume than wheeled bags of the same nominal size.
Build a capsule wardrobe — the 3-2-1 rule
For a 7-day trip: 3 tops + 2 bottoms + 1 versatile layer = 6 combinations minimum. All items must mix and match. Choose neutral colors (navy, white, grey, olive). For 10–14 days, add 1 extra top and plan to do laundry once mid-trip — most accommodations have laundry service or a sink. Merino wool is the single best fabric investment for carry-on travelers: odor-resistant (worn 2–3 days between washes), wrinkle-resistant, and works in temperatures from 5°C to 30°C.
Master the TSA 3-1-1 liquid rule — or bypass it entirely
Each container must be 100ml (3.4oz) or less. All containers in one 1-litre clear bag. One bag per person. The smartest carry-on travelers use solid toiletries to bypass the rule entirely: solid shampoo bars, solid conditioner bars, solid deodorant, and sunscreen sticks are not liquids and can be any size. Reducing to a nearly empty liquid bag leaves room for any medication liquids you need.
Use packing cubes and roll your clothes
Rolling clothes instead of folding saves 20–30% of space and reduces wrinkles. Use packing cubes to organize categories (clothes, underwear/socks, tech cables) and apply compression. Put heavy items (shoes, toiletry bag) at the bottom near the wheels. Stuff socks inside shoes. Wear your bulkiest items on the plane — boots, jeans, and a heavy jacket worn on board save significant bag space.
Do the final weight and lift test
Weigh your bag: most weight-limited airlines allow 7–10 kg. Do the one-arm overhead test — if you can't lift it into the overhead bin with one arm, it's too heavy. Check your bag against the most restrictive airline on your itinerary (usually the budget carrier). If you're close to the size limit, use a flexible duffel instead of a wheeled case — it compresses through gate-check bag-sizers more easily.

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What Is the Complete Carry-On Packing Checklist?

The Bag

Carry-on compliant bag
Max 22×14×9 in (56×36×23 cm) for US carriers. Soft-sided preferred.
Personal item (backpack / tote)
Max 18×14×8 in for under-seat storage. Used for valuables, laptop, and items you need during the flight.
Packing cubes (3–4 set)
Compression cubes save 20–30% space. Separate: clothes, underwear, cables.

Clothing — 7-Day Trip

Tops × 3
Merino wool or quick-dry synthetic. Neutral colors that match all bottoms.
Bottoms × 2
One dressable option (dark jeans or chinos) + one casual (travel trousers or shorts).
Packable jacket or layer × 1
Down jacket compresses to grapefruit size. Wear on the plane — doesn't count as a bag item.
Underwear × 4–5
Merino or quick-dry. Can be washed in a sink and dry overnight.
Socks × 4–5
Merino wool socks are odor-resistant and temperature-regulating. Stuff inside shoes to save space.
Sleepwear or versatile layer
A lightweight long-sleeve top + shorts doubles as sleepwear and casual lounge wear.
Shoes × 2 max
Wear your bulkiest pair on the plane. Pack one pair in the bag maximum. Shoes take disproportionate bag space — choose carefully.

Toiletries (TSA 3-1-1 Compliant)

1-litre clear zip bag
Required for all liquids in carry-on. One per person. Must be removed from bag at security.
Solid shampoo bar
Not a liquid — no size limit. Equivalent to 2–3 bottles of liquid shampoo. Works in any water type.
Solid deodorant
Not a liquid — no size limit in carry-on. Crystal or stick form.
Toothpaste (≤100ml)
Standard 75ml tubes are carry-on compliant. Or use toothpaste tablets — solid, no size limit.
Sunscreen stick or ≤100ml bottle
Solid sunscreen sticks bypass the liquid rule. Liquid bottles must be ≤100ml.
Moisturiser (≤100ml)
Cabin air is extremely dry (10–15% humidity). A small moisturiser is essential on long-haul flights.
Travel-size anything (≤100ml)
Decant into reusable silicone travel bottles. Refillable and TSA-compliant.

Electronics & Tech

Laptop or tablet + charger
Goes in personal item (under-seat bag) for easy security screening.
Universal power adapter
Single multi-region adapter covers US, EU, UK, and AU/NZ plugs. Weighs 150–200g.
Portable charger (max 10,000mAh)
⚠️ Portable power banks (lithium-ion) MUST go in carry-on — they're banned from checked luggage. Devices with internal batteries (laptops, phones) may be checked. Most airlines allow up to 100Wh (≈27,000mAh at 3.7V); 10,000mAh is the universally safe conservative limit.
USB-C hub (optional)
One hub replaces multiple cables. Reduces tech pack to 2–3 cables total.
Noise-cancelling earphones
Essential for long-haul flights. Goes in personal item.

Documents & Money

Passport (valid 6+ months)
Most countries require 6 months validity beyond your travel dates. Check before departure.
Visa or ESTA (if required)
US ESTA required for eligible countries visiting the USA. Apply at esta.cbp.dhs.gov — apply 72 hours before departure.
Travel insurance documents
Digital copy on phone + printed copy. Include emergency contact numbers.
Local currency (small amount)
For transport from airport and first meals before finding an ATM.

Health & Essentials

Prescription medications
Bring more than you think you need. Keep in original labeled containers in carry-on — never check critical medications.
Rehydration sachets × 4
Cabin air dehydrates rapidly. Essential for tropical destinations and jet lag recovery.
Pain relief & antihistamine
Travel-size packs. Antihistamines help with allergies and as a mild sleep aid on overnight flights.

How Does Carry-On Packing Change for 1 Week vs. 2 Weeks?

The difference between a 7-day and a 14-day carry-on trip is not twice the clothes — it's one mid-trip laundry session.

1 Week vs. 2 Week Carry-On Comparison
Item	7 Days	14 Days
Tops	3	4
Bottoms	2	2–3
Underwear	4–5	5–6
Laundry needed	No (or once)	Yes, once mid-trip
Toiletries	Full travel-size kit	Same — refill at destination
Bag weight (est.)	6–8 kg	7–9 kg

💡 Mid-trip laundry options: Hotel laundry service (often $15–30/bag), Airbnb with washer, coin laundry near most hostels, or hand-wash underwear and merino tops in the sink overnight (they dry by morning in most climates).

What Are the Best Carry-On Tips by Destination?

🇯🇵 Japan carry-on only: Japan is one of the easiest destinations for carry-on only travel. Coin laundromats (koin randorī) are everywhere — even in small towns — and cost ¥200–400 per wash. Convenience stores (7-Eleven, Lawson, FamilyMart) sell all toiletries at reasonable prices if you run out. IC cards (Suica, Pasmo) are slim enough to pack easily alongside your documents. See the full Japan packing list for destination-specific items.

🇪🇺 Europe carry-on only (especially budget airlines): European budget airlines have the strictest carry-on rules — pack to Ryanair's 40×20×25 cm limit if flying Ryanair at any point on your trip. Coin laundromats are common in most European cities. Most European pharmacy chains (Boots, dm, Rossmann) sell solid toiletries. For Ryanair specifically, measure your bag fully packed — a stuffed bag that's slightly over size will be gate-checked for €30–50. See the Europe packing list for adapter and Schengen tips.

🇹🇭 Thailand & Southeast Asia carry-on only: Heat and humidity mean daily clothing changes. Merino is less effective in extreme tropical humidity — lightweight quick-dry synthetic is better. Laundry services cost $1–3/kg at guesthouses. Sunscreen counts as a liquid — pack a 100ml bottle or use a solid stick. See the Thailand packing list for regional packing differences between Bangkok, Phuket, and Chiang Mai.

🏖️ Beach trip carry-on only: The challenge is swimsuits take 4–8 hours to dry in humidity. Pack at least 2 quick-dry swimsuits and a microfibre towel. Reef-safe sunscreen is bulky — pack a solid sunscreen stick (not a liquid) or buy at the destination. See the beach vacation packing list for the full beach-specific checklist.

What Should I Leave at Home When Packing Carry-On Only?

More than 2 pairs of shoes — shoes are the largest volume and weight item. Two pairs maximum; wear the bulkiest on the plane.
Full-size toiletries — a 500ml shampoo bottle uses 15% of your bag. Solid bars or travel-size always.
Books — a Kindle or phone reading app weighs nothing. Three paperbacks weigh 600g and take significant space.
"Just in case" outfits — you will buy anything you forget locally. The cost of an extra t-shirt at the destination is always less than the cost of the space in your bag.
Hairdryer or straightener — hotels provide hairdryers in all but the most basic accommodation. Straighteners are heavy, bulky, and often have wrong-voltage issues abroad.
More than 2 weeks of clothing — if your trip is longer than 2 weeks, plan to do laundry. Carry-on only is not the right strategy if you refuse to do any laundry.

Common Mistakes to Avoid

Measuring the bag without wheels and handles — Airlines measure total external dimensions including wheels, handles, and pockets. Your "21-inch" bag might measure 23 inches to the airline.
Packing full-size liquids "just in case" — Security will confiscate them. Transfer to 100ml containers or switch to solid alternatives (shampoo bars, solid deodorant). Solid toiletries bypass the 3-1-1 rule entirely.
Bringing a portable charger in checked luggage — Lithium batteries are BANNED from checked bags on almost all airlines. Power banks must go in carry-on. Most airlines allow up to 100Wh (~27,000mAh).
Packing a separate outfit for every day — The carry-on lifestyle requires a capsule wardrobe. 3 tops + 2 bottoms in matching colors = 6 outfit combinations. Merino wool can be worn 2-3 days.
Forgetting that you can wear items on the plane — Your heaviest jacket, boots, and bulkiest items should be worn, not packed. This doesn't count toward your bag allowance.

Packing by Trip Length

Duration	Tops	Bottoms	Strategy	Notes
3-5 days	3	1-2	No laundry needed	Standard carry-on is plenty
1 week	3-4	2	1 laundry mid-trip (or merino)	3-2-1 capsule wardrobe works perfectly
2 weeks	4-5	2-3	Laundry every 5 days	Choose accommodations with washing machines

Frequently Asked Questions

What size is a carry-on bag?: The most common carry-on limit is 22×14×9 inches (56×36×23 cm) for US airlines like Delta, United, and American — measured including wheels and handles. Southwest allows more space (24×16×10 in). European budget airlines are significantly stricter: Ryanair allows 40×20×25 cm (free cabin bag), easyJet 45×36×20 cm, and Wizz Air 40×30×20 cm. Always verify with your specific airline — limits change and budget airlines enforce them at the gate.
Can I bring a personal item AND a carry-on?: Yes. Most airlines allow one carry-on (overhead bin) plus one personal item (under the seat). A personal item is typically a backpack, laptop bag, or purse — usually max 18×14×8 inches. Some budget airlines (Ryanair basic fare, Frontier, Spirit) charge for overhead bin access — your "carry-on" on these airlines may only mean the under-seat personal item unless you pay extra.
What liquids can you bring on a plane?: Under the TSA 3-1-1 rule: each container must be 100ml (3.4oz) or less, all containers fit in one 1-litre clear bag, one bag per person. Liquids include: water, shampoo, conditioner, sunscreen, lotion, toothpaste, perfume, and contact lens solution. Not liquids (exempt from the rule): solid shampoo bars, solid deodorant, toothpaste tablets, sunscreen sticks, and food items.
Can you really pack for 2 weeks in a carry-on?: Yes — the key is merino wool clothing that can be worn 2–3 days between washes, doing laundry once mid-trip (available nearly everywhere for $3–15), and solid toiletries. Most travelers overpack by 40–50% for trips under 2 weeks. Five versatile mix-and-match items create more outfit combinations than 14 separate outfits that don't work together. If your destination has laundry access (hostels, Airbnbs, coin laundromats), 2 weeks in a carry-on is entirely realistic.
Does a backpack count as a carry-on or personal item?: It depends on size. A small backpack (under 18×14×8 in) counts as a personal item and goes under the seat. A larger travel backpack (22×14×9 in range) counts as a carry-on and goes in the overhead bin. Most 40L travel backpacks are designed as carry-on size. If you have both a laptop backpack and a 40L travel backpack, the laptop bag is the personal item and the 40L is the carry-on.
What size carry-on fits ALL airlines?: 40×30×20 cm (16×12×8 inches) fits every airline worldwide including Ryanair's strictest "small bag" rules. For US domestic, 56×36×23 cm (22×14×9 inches) is standard. If you fly budget European airlines regularly, invest in a bag that meets 40×20×25 cm — Ryanair's free personal item limit.
How do I do laundry while traveling carry-on only?: Sink-wash: pack a universal sink plug and travel detergent sheets (flat-pack, no liquid). Laundromats: available in every major city ($3-8 per load). Hotel laundry: expensive (skip this). Merino wool: can be worn 2-3 days, air-dries overnight.
Are packing cubes worth it?: Yes — compression packing cubes save 20-30% space and keep your bag organized. The compression type (with a second zipper to squeeze air out) work best. Get a set of 3-4 in different sizes. They also make repacking at each destination much faster.

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