Carry-On Only for Japan: Plan Flights, Trains and Packing
Prepare for Japanese airline allowances, trains, medicines and customs with a route-specific packing plan.
Plan your Japan bag around each booked flight and the places you will visit. A rail-friendly bag still has to meet the operating airline’s size, piece and combined-weight rules. Shopping is part of that allowance; a foldable tote is not a free extra piece.
ANA and JAL vs Peach and Jetstar Japan
ANA and JAL allow one main bag plus one personal item sharing 10 kg in all cabins. Main bag: 55× 40× 25 cm AND 115 cm total, including wheels and handles. On domestic aircraft below 100 seats: 45× 35× 20 cm / 100 cm total. ANA personal item: 40× 30× 20 cm; JAL requires underseat fit without a published numeric box.
Peach Aviation includes one cabin bag and one personal item sharing 7 kg. The main bag has a 115 cm total-dimension limit, including protrusions. Weigh both items together, including shopping. Excess must travel as checked baggage; paying a baggage fee does not increase cabin weight. See the Peach guide and check the bag size; the tool does not validate the combined weight.
Jetstar Japan (GK) Starter includes one 56× 36× 23 cm main bag and one small underseat item, sharing 7 kg. The February 2027 JQ change does not apply to GK.
Pack for your route
| Plan | Prioritize |
|---|---|
| Cities and trains | Mixable clothes, tested walking shoes and a manageable bag |
| Snow or colder areas | Layers and footwear appropriate to the actual forecast and activity |
| Essential access | Passport, booking and medicine documentation in reach |
| Return shopping | Space and weight margin plus destination import checks |
Choose a clothing rotation based on confirmed laundry access. Ask your accommodation about facilities, opening times and cost; do not assume every hotel has a machine or every neighbourhood has a 24-hour laundry. Compression saves space, not weight. Allow drying time and one clean spare outfit.
Many stations offer lockers or other luggage services, but the compartment you need may be full or too small. Check the specific station’s sizes, hours, payment and retrieval terms and plan a fallback. Keep passport, medicines and anything needed before collection with you. Carry some yen and a backup card without assuming all shops or ATMs accept your card.
Medicines, food and plants
Check the active ingredient, quantity and category with MHLW before departure. Its ordinary personal-use categories include up to one month of prescription medicine and up to two months of other drugs without Import Confirmation; external-use and injectable products have separate conditions. Controlled or prohibited substances have a different process and some require advance permission. A prescription is not blanket import approval. Keep packaging and paperwork; do not interrupt treatment to save weight.
MAFF rules depend on the product and origin. Cooking, processing or vacuum-sealing meat does not create an exemption. Plants are not all banned: permitted regulated plants may need a phytosanitary certificate and arrival inspection, while soil and specified products are prohibited. Present regulated items at quarantine before customs. Your return destination has its own rules; commercially sealed souvenirs are not automatically allowed.
Liquids and electrical equipment
Narita publishes ordinary international-departure liquids in containers no larger than 100 ml inside one transparent resealable 1-litre bag per passenger. CT equipment is not a published waiver. Follow the checkpoint and check special articles and connecting airports separately. Check a power bank’s label and airline conditions; there is no universal two-battery rule for every battery category.
Japan uses 100V electricity and regional 50/60Hz with TypeA plugs. A plug adapter changes shape, not voltage. Check the actual input range, frequency, grounding and manufacturer instructions; a North American device is not automatically suitable.
Rail tickets and the return trip
For the issued nationwide JAPAN RAIL PASS, the operator describes inserting the pass into a compatible automatic gate and retrieving it; IC-only gates are excluded. Do not mistake an online purchase or reservation for a phone-wallet pass. Check eligibility, covered trains and seat reservations. Welcome Suica Mobile is currently described by JR East as an iOS app, with device/payment conditions; check your actual device before relying on mobile payment.
When entering or leaving Japan, aggregate means of payment above 1million yen or its equivalent must be declared under Japan Customs’ listed categories. Do not use a fixed US-dollar conversion. Keep purchase records and check souvenir taxes and return-destination import rules. Measure and weigh the whole bag before the return flight.
For the next decision, use the bag checker, Japan carrier/security guide, winter packing guide or onsen and temple packing list.
Sources and scope
Source-based research; no hands-on test or specialist review claimed.
One cabin bag plus one personal item; two items share 7 kg. Size is a 115 cm linear total, including protrusions. Excess requires checked baggage.
Main page says less than 115 cm; official FAQ and all current fare rules say no more than 115 cm. Model uses the explicit inclusive fare/FAQ boundary. No published separate personal-item box or per-item weight. Domestic and international liquid rules differ.
Carry-on baggage allowance; Liquids; Medications, Baby formula/Baby foodSource review: · Codex (AI source review)
Minimum, Standard and Standard Plus include two cabin items sharing 7 kg, with dimensions totaling no more than 115 cm.
For boarding on or after 27 October 2024. This is a combined weight, not 7 kg per bag; no paid cabin-weight upgrade modeled.
Minimum; Standard; Standard Plus — Carry-on baggageSource review: · Codex (AI source review)
Jetstar current included baggage, date-bound JQ change and unchanged GK rules; no universal surcharge or inspection rate.
Only the identified Jetstar correction; unrelated claims not recertified.
Relevant operator/date/allowance sectionSource review: · Codex (AI source review)
Jetstar current included baggage, date-bound JQ change and unchanged GK rules; no universal surcharge or inspection rate.
Only the identified Jetstar correction; unrelated claims not recertified.
Relevant operator/date/allowance sectionSource review: · Codex (AI source review)
One main bag and one personal item share 10 kg in all cabins; 55×40×25 cm AND total 115 cm including handles/wheels. Personal item 40×30×20 cm.
Scoped encountered carrier claim correction; unrelated destination and other-carrier claims not recertified.
Free carry-on allowance / class-independent size and weight table; notesSource review: · Codex (AI source review)
One main bag and one personal item share 10 kg in all cabins; 55×40×25 cm AND total 115 cm including handles/wheels. Personal item must fit under seat; no numeric box published.
Scoped encountered carrier claim correction; unrelated destination and other-carrier claims not recertified.
Free carry-on allowance / class-independent size and weight table; notesSource review: · Codex (AI source review)
Ordinary medicines have category and quantity exceptions; controlled substances and other specified products need separate procedures.
Check the exact product and required permission; a prescription alone does not authorize every import.
Medicine import categories and quantity exceptionsSource review: · Codex (AI source review)
Plant entry controls depend on product, species and origin; soil is prohibited.
This plant-quarantine source does not establish meat rules or a blanket ban on all plants.
Plant Import QuarantineSource review: · Codex (AI source review)
Cooking and vacuum packaging do not exempt a meat product from applicable animal-quarantine controls.
Check product and origin. This branch excludes dairy carried as passenger baggage; it does not certify every other food requirement.
Animal products: certificate and inspectionSource review: · Codex (AI source review)
Aggregate means of payment exceeding 1 million yen or equivalent require declaration on entry or exit.
The threshold covers listed payment instruments; no fixed conversion to US dollars is assumed.
Declaration of means of paymentSource review: · Codex (AI source review)
Narita international departures limit ordinary liquid containers to 100 ml in one 1 L resealable bag, with published exceptions.
Scanner equipment does not establish an exemption; other airports and connecting checkpoints need separate review.
International departures: liquids and exceptionsSource review: · Codex (AI source review)
Climate and station storage vary by location; confirm the actual station and activity conditions.
No universal locker availability, laundry price, clothing code or weather guarantee is established.
Travel FAQ: climate, storage and local etiquetteSource review: · Codex (AI source review)
Japan uses 100 V electricity with regional 50/60 Hz; check the device label and manufacturer conditions.
A plug adapter alone does not establish voltage or frequency compatibility.
Voltage, frequency and plugsSource review: · Codex (AI source review)
Ordinary onsen bathing involves washing first, leaving shoes outside the changing area and keeping towels out of the bath.
Check venue exceptions, towel supply and tattoo policy; no medical benefit or universal flip-flop permission is claimed.
Bathing etiquette and venue conditionsSource review: · Codex (AI source review)
The issued JAPAN RAIL PASS goes into the automatic ticket slot and must be retrieved; IC-only gates are excluded.
This is not a phone-wallet or digital-pass claim.
Using automatic ticket gatesSource review: · Codex (AI source review)
Issued-pass, exchange, passport, route and seat conditions apply to JAPAN RAIL PASS use.
The pass does not establish unrestricted free travel on every train.
Pass use and conditionsSource review: · Codex (AI source review)
Welcome Suica Mobile is an iOS service with device, payment and location conditions.
Do not assume every Android phone or Google Pay supports this product.
Welcome Suica Mobile: device and use conditionsSource review: · Codex (AI source review)
Frequently asked questions
Is there one carry-on allowance for Japan?
Does my prescription guarantee medicine entry?
Are station lockers and laundry guaranteed?
Check if your bag fits
Compare your carry-on dimensions with your airline’s allowance.