Do this now

Follow these steps in order.

  1. 01

    Open the operating airline's official booking or app and confirm the airline code, aircraft type if shown, fare or bundle, and the baggage allowance attached to that exact passenger.

  2. 02

    Count every cabin item, including a handbag, backpack, laptop bag, shopping bag and souvenir bought after security. Consolidate loose items before weighing.

  3. 03

    Measure the main bag at its widest external points, including wheels, handles, pockets and bulges. For JAL and ANA, check whether the aircraft has fewer than 100 seats.

  4. 04

    Weigh the main bag and personal item together. Use 10 kg as the combined ceiling for ordinary JAL and ANA travel, and 7 kg for standard Peach and Jetstar Japan travel.

  5. 05

    Keep the personal item small enough for the space under the seat. Pack the main bag so you can lift and stow it without assistance, as requested by the industry guideline effective April 1, 2026.

  6. 06

    Move valuables, essential medicine, travel documents and permitted spare lithium batteries into the cabin plan before checking any bag. Follow the separate airline and security restrictions for those items.

  7. 07

    If the allowance will not work, add checked baggage or an eligible extra-cabin-baggage option through the official airline channel while it is still available; do not rely on rearranging at the gate.

  8. 08

    Reweigh after adding airport purchases and keep a foldable bag only if it remains within the item count. At the airport, use the airline's gauge and ask staff before security if the fit is uncertain.

  9. 09

    For a codeshare, connection or separate return ticket, repeat the check for every operating carrier and sector; the strictest allowance may determine the practical packing plan.

What to know

The four-airline comparison in one minute

JAL domestic: one carry-on plus one personal item, 10 kg combined. On aircraft with 100 seats or more, the carry-on must be within 55 × 40 × 25 cm and 115 cm total. On aircraft with fewer than 100 seats, it must be within 45 × 35 × 20 cm and 100 cm total.

ANA domestic: one carry-on plus one personal item, 10 kg combined. The same 100-seat split applies: 55 × 40 × 25 cm and 115 cm total on larger aircraft; 45 × 35 × 20 cm and 100 cm total on smaller aircraft. ANA separately lists the personal item within 40 × 30 × 20 cm.

Peach: one cabin bag plus one personal item, two items total, 7 kg combined. The official rule reviewed states that the main bag's three dimensions must total no more than 115 cm and that handles, pockets and wheels count.

Jetstar Japan (GK): one main item plus one small item, two items total, 7 kg combined on a standard Starter allowance. The main item must be within 56 × 36 × 23 cm and the small item must fit under the seat. An eligible paid or bundled 14 kg allowance still permits only two items and no single item may exceed 10 kg.

What to know

Confirm the operating airline, not only the seller

A ticket can be sold by one airline while another operates the aircraft. ANA states that the operating airline's rules apply on codeshares, and JAL directs passengers on other-airline operations to that carrier's baggage rules. Look for wording such as operated by, the operating-airline code and the aircraft type in the reservation.

Repeat this check after an aircraft or schedule change. A JAL or ANA itinerary that moves from a larger jet to a regional aircraft can move into the smaller 45 × 35 × 20 cm limit. A cabin suitcase marketed as carry-on size is not proof that it fits that aircraft.

If a trip combines separate tickets, each sector keeps its own allowance. A 10 kg bag accepted on JAL or ANA can be 3 kg over a standard Peach or Jetstar Japan allowance on the next flight. Through-checking and protection between separate tickets are separate questions.

What to know

How to measure and weigh without a gate surprise

Measure the packed bag, not the empty shell. Airlines include protruding handles, casters, wheels and pockets. Compressible fabric does not help if a stuffed pocket prevents the bag from fitting the gauge or the stated dimensions.

For JAL and ANA, satisfying the total is not enough: every side must also remain within its individual maximum. A long, narrow bag can be within 115 cm overall and still fail one side. Peach's reviewed public rule gives a 115 cm total, while Jetstar publishes three separate maximum sides for the main item.

Use a luggage scale, then verify the combined number with both items attached or weighed separately and added. Jackets worn normally are not a strategy for bypassing staff judgment, and duty-free or souvenir purchases still count as cabin items under JAL and Peach guidance.

What to know

JAL domestic: the aircraft size changes the bag

JAL permits two cabin items per passenger: one carry-on bag and one personal belonging that fits under the seat. Their total weight must be 10 kg or less. Airport shopping bags and souvenirs are included in the item count.

JAL lists 55 × 40 × 25 cm, total 115 cm, for aircraft with more than 100 seats operated by JAL or JTA. For the listed regional aircraft operated by JAIR, JAC, HAC and RAC, the limit is 45 × 35 × 20 cm, total 100 cm. Check the current aircraft rather than inferring from the route.

An oversized, overweight or unstowable item may be moved to the hold at the gate or on board. JAL's checked-baggage page says an ordinary domestic passenger receives up to 20 kg of checked baggage free, but other-airline codeshares and a domestic sector included in an international ticket can follow different rules. Confirm the actual itinerary before treating 20 kg as guaranteed.

What to know

ANA domestic: the same aircraft split, plus a stated personal-item size

ANA permits one carry-on and one personal item, with a 10 kg combined limit. The main bag follows 55 × 40 × 25 cm and 115 cm total on aircraft with 100 seats or more, or 45 × 35 × 20 cm and 100 cm total on aircraft with fewer than 100 seats.

ANA states a 40 × 30 × 20 cm limit for the personal item and requires it under the seat. The page also says that baggage within the nominal allowance may still be placed in the cargo hold when cabin storage is unavailable.

The airline provides an aircraft-type list, but assignments can change. Check the booking shortly before travel and use the smaller limit if the operating aircraft has fewer than 100 seats. Codeshare flights use the operating airline's rules.

What to know

Peach: 7 kg combined and two items total

Peach permits one cabin bag plus one personal item, two items total. Together they must weigh no more than 7 kg, and the three dimensions of the main bag must total no more than 115 cm. Handles, pockets and wheels are included.

Items bought after security also count. Peach says staff may check the size, weight and number of pieces by sight or measurement. If the allowance is exceeded, the baggage must be checked for a fee; even an in-limit bag may be checked when cabin space is unavailable.

Do not wait for the gate to discover the problem. Peach checked baggage is a paid option and charges vary by where and how it is purchased. Use the current booking page to see the exact fee for the route and purchase channel rather than relying on an old price table.

What to know

Jetstar Japan: standard 7 kg or a limited 14 kg option

For Jetstar Japan (GK), a standard Starter allowance is one main item and one small item with a combined weight of 7 kg. The main item must fit the overhead locker and be within 56 × 36 × 23 cm; the small item must fit under the seat.

Selected fares, bundles or the +7 kg Extra Carry-On option can provide 14 kg across the same two items. No single item may weigh more than 10 kg. Jetstar says this option is limited, available only on selected routes and may sell out, so it is not a guaranteed airport rescue.

Jetstar monitors baggage at the airport. Excess fees can apply and the bag may be transferred to the hold. Check Manage Booking for the allowance attached to the passenger, especially when the booking came through an agent or another airline.

What to know

Keep essential and restricted items in the right place

A bag moved to the hold at the last minute creates a second task: remove travel documents, money, valuables, fragile items and essential medicine. Follow airline instructions for electronic devices and do not leave a permitted spare lithium battery or power bank in checked baggage.

Carry-on weight permission does not override aviation-security rules. Peach's current page, for example, has separate controls for power banks, lighters, scissors, tripods, liquids and medical equipment. The same object can have different conditions by carrier, battery rating, route or departure terminal.

Use the related power-bank guide for the current Japan flight rule and check the operating airline's restricted-items page for every unusual item. When unsure, ask before baggage acceptance closes, not after the bag has entered the system.

What to know

Special items need their own rule

Strollers, mobility aids, medical devices, musical instruments, sports equipment and child items do not share one universal treatment. Jetstar says qualifying assistive devices are weighed separately and do not count toward the ordinary cabin allowance, while JAL publishes a specific stroller condition. Those examples should not be transferred to another carrier.

Contact the operating airline before departure when an item cannot fit the ordinary bag dimensions, requires a battery approval, must remain with the traveler or may need an extra seat. Ask what documentation, advance notice and airport handling are required.

If a device is essential, keep the airline's approval or case number offline, label detachable parts and arrive early enough for staff inspection. Do not assume that a medical or fragile label guarantees cabin storage.

What to know

What to do when the bag is over the limit

First remove items that must not be checked and secure them in the personal item without exceeding its size or the total cabin weight. Then compare three options: reduce the contents, buy checked baggage, or buy an eligible additional cabin allowance where the airline offers one.

Use the official airline booking channel and read the confirmation after payment. A checked-bag purchase does not change the cabin item count, and Jetstar's 14 kg option does not allow a third item or an item over 10 kg.

If no add-on is available, go to the staffed counter before the published baggage deadline. At the gate, the choice may be more expensive or limited, and a bag containing a power bank, spare battery, medicine or valuables will still need repacking before it can enter the hold.

What to know

Checked November 6, 2026 — recheck before travel

The dimensions, combined weights and item counts in this guide were checked against the official JAL, ANA, Peach and Jetstar pages on November 6, 2026. Airline pages, fares, aircraft assignments and add-on availability can change after that date.

Before leaving, open the operating airline's current carry-on page and the allowance shown in the booking. Recheck after a schedule, aircraft or operator change and again before a separate connecting or return flight.

This guide does not quote a universal excess-baggage price because fees depend on the airline, route, fare, timing, channel and bag. The amount displayed by the airline for the current booking is the relevant price.

If that does not work

Use the fallback.

  • The aircraft type is missing: contact the operating airline or pack to the smaller JAL/ANA 45 × 35 × 20 cm limit until the type is confirmed.
  • The bag fits the dimensions but is overweight: remove nonessential contents or buy an eligible allowance; a small suitcase is not exempt from the combined weight rule.
  • The bag is light but one side is too long: use a different bag or check it; meeting only the three-side total does not satisfy JAL, ANA or Jetstar's individual-side limits.
  • Jetstar's 14 kg option is sold out or absent: buy checked baggage if available or reduce the cabin contents; the option is limited by flight and route.
  • You bought souvenirs after security: consolidate and reweigh; JAL and Peach state that shopping or post-security purchases count.
  • Staff require an in-limit bag to be checked because the cabin is full: remove valuables, documents, medicine and restricted cabin-only batteries before handing it over.
  • A codeshare seller and operator show different rules: follow the operating carrier and obtain written clarification from that airline before travel.
  • The airport scale differs from your home scale: use the airline's measured result, repack at the counter and complete any paid checked-bag process before the deadline.

Before you need it

Save this offline.

  • Operating airline, flight number and aircraft type
  • Fare or bundle name and confirmed baggage allowance
  • Main bag external dimensions including wheels and handles
  • Combined cabin weight after final packing
  • One personal item that fits under the seat
  • Checked-baggage or extra-cabin purchase confirmation
  • Power bank, spare batteries, medicine, documents and valuables separated
  • Airline carry-on and restricted-items pages saved offline
  • Bag-drop deadline and correct terminal

Frequently asked questions

Japan Domestic Flight Carry-On Limits: JAL, ANA, Peach and Jetstar FAQ

What is the carry-on weight limit on a Japan domestic flight?

It depends on the operating airline. JAL and ANA allow 10 kg combined across one carry-on and one personal item. Standard Peach and Jetstar Japan allowances are 7 kg combined across two items.

Can I bring both a suitcase and a backpack?

Usually yes when one is the main carry-on and the other is a personal item that fits under the seat, but both count toward the airline's combined weight and two-item limit.

What size cabin bag can I take on JAL or ANA domestic flights?

On aircraft with 100 seats or more, the main bag must be within 55 × 40 × 25 cm and 115 cm total. On aircraft with fewer than 100 seats, it must be within 45 × 35 × 20 cm and 100 cm total.

Does Peach have a 7 kg carry-on limit?

Yes. Peach permits two cabin items in total, including the personal item, with a combined weight of 7 kg. The main bag's three dimensions must total no more than 115 cm.

Can I buy 14 kg of carry-on baggage on Jetstar Japan?

An eligible fare, bundle or +7 kg Extra Carry-On option can provide 14 kg across two items, with no single item over 10 kg. It is limited by route and flight and may sell out.

Do suitcase wheels and handles count in the dimensions?

Yes. The reviewed airline pages include wheels, casters, handles and pockets in the external measurement. Measure the packed bag at its widest points.

Do airport shopping bags count as carry-on?

Yes. JAL includes shopping bags and airport souvenirs in its item count, and Peach includes items bought after security. Consolidate before boarding.

Which baggage rule applies to a codeshare flight?

Check the operating airline. ANA explicitly applies the operating carrier's rules to codeshares, and JAL directs other-airline operations to that carrier's rules.

What happens if my carry-on is overweight at the gate?

The airline can charge an excess or checked-baggage fee and move the bag to the hold. Remove cabin-only batteries, valuables, documents and essential medicine before surrendering it.

Primary evidence

Official sources used

Open these pages again before travel. External links lead to the responsible Japanese authority or transport organization.