Carry-on baggage rules on Japanese domestic flights (2026 update)

Introduction

If you are planning a trip within Japan, you will likely find that domestic flights are an efficient way to get from cities like Tokyo (Haneda) to Osaka or Sapporo (New Chitose). However, if you are traveling in 2026, you need to be aware of significant changes to carry-on baggage rules.

To ensure a smooth boarding process and avoid last-minute stress at the gate, it is essential to understand the new industry-wide guidelines. This guide explains the updated rules for Japanese domestic flights to help you pack and board with confidence. Please note that the information in this guide is current as of the time of writing.

What You Need to Know First

The Two-Item Rule

Starting in April 2026, under industry-wide guidelines from the Scheduled Airlines Association of Japan, passengers are permitted to bring a maximum of two items on board: one personal item and one carry-on bag. This rule applies to both domestic and international flights of the participating Japanese airlines. If you bring more than two items, you may be asked to check the additional bags into the hold.

Defining the Personal Item

A personal item is a smaller bag, such as a handbag, shoulder bag, or laptop case. The primary requirement is that it must be small enough to fit under the seat in front of you.

For those flying with the ANA group from July 1, 2026, the personal item size is specifically defined as being within 40 cm x 30 cm x 20 cm.

Defining the Carry-on Bag

The carry-on bag is the larger item intended for the overhead bin. According to the guidelines, this bag must be a size and weight that you can place in the overhead bin yourself.

For the ANA group, the size limits depend on the aircraft:

• Aircraft with 100 or more seats: Total dimensions of 115 cm or less (within 55 cm x 40 cm x 25 cm).
• Aircraft with fewer than 100 seats: Total dimensions of 100 cm or less (within 45 cm x 35 cm x 20 cm).

Weight and Airline Variations

For the ANA group, the combined weight of the carry-on bag and the personal item must be 10 kg or less.

It is important to remember that detailed size and weight rules differ by airline and aircraft. Some airlines may have stricter rules than others. You should check the official website of your specific airline to confirm the exact limits for your flight.

Tips by Situation

When Traveling with a Laptop or Tablet

Since a laptop case is considered a personal item, it is a good idea to keep your electronics in a bag that meets the “under-seat” size requirements. If you use a large briefcase that does not fit under the seat, it may be counted as your one permitted carry-on bag, meaning you cannot bring an additional suitcase on board.

I usually take my laptop out before the security check to keep things moving smoothly. However, with the new screening equipment at Haneda Airport’s domestic terminals, it is no longer necessary to remove them.

When Using a Small Suitcase

If you are using a rolling suitcase, ensure it fits within the dimensions of the aircraft you are flying. Because some domestic routes use smaller planes (fewer than 100 seats), a suitcase that fits on a flight from Haneda to Naha might be too large for a flight to a smaller regional airport. Always verify the aircraft type or check the airline’s size chart for smaller planes.

When Packing for Short Trips

To stay within the two-item limit, consider using a medium-sized backpack as your carry-on bag and a small crossbody bag as your personal item. This allows you to keep your passport, wallet, and phone easily accessible while keeping your clothing and toiletries in the overhead bin.

Common Mistakes

Bringing “Extra” Small Bags

Small extra bags may also count toward the limit, so check your airline’s rules before you fly. If you buy souvenirs at the airport after checking in, consider packing them into your existing carry-on or personal item so you stay within the two-item limit at boarding.

Overestimating Weight

Many international travelers are used to higher weight limits for carry-ons. However, a 10 kg combined limit for both bags can be reached quickly, especially if you are carrying heavy electronics or books. If your bags are overweight, the airline may require you to check them, which can lead to delays at the gate.

Ignoring Aircraft Size

Travelers often assume all flights on the same airline have the same rules. As noted in the ANA group examples, the size limit for the carry-on bag decreases if the aircraft has fewer than 100 seats. Failing to check the aircraft size can result in your bag being rejected for the cabin.

Summary

To ensure your journey through Japan is seamless, keep these key points in mind for 2026:

• Limit yourself to two items: one personal item (under-seat) and one carry-on bag (overhead bin).
• Ensure your personal item is small (ANA group: within 40 cm x 30 cm x 20 cm from July 1, 2026).
• Check the aircraft size, as smaller planes have stricter dimensions for carry-on bags.
• Keep your combined weight within the airline’s limit (ANA group: 10 kg or less).
• Verify the specific rules for your chosen airline, as guidelines can vary.

Because airline policies can change and differ between carriers, please check the latest official information on your airline’s website before you travel.