Last Updated on July 2, 2026 by Daniel Globe
JAL lets you bring two carry-on items with a combined weight of up to 10 kg, so you’ll want to pack carefully before you fly. Your main bag can’t exceed 55 x 40 x 25 cm on most aircraft, and your personal item should fit under the seat. CPAP machines and other essential medical gear are allowed, but liquids, electronics, and sharp items may need extra screening. Keep reading for the exact size limits, weigh-in rules, and packing tips that make airport travel smoother.
Quick Answer
JAL allows two carry-on items — one personal item and one standard bag — with a combined weight limit of 10 kg (22 lbs). The standard bag must not exceed 55 x 40 x 25 cm on most aircraft (45 x 35 x 20 cm on smaller planes). JAL weighs bags at check-in and again at the gate.
Key Takeaways
- Two carry-on items allowed: one personal item plus one standard bag, combined weight capped at 10 kg for every cabin class.
- Standard bag size is 55 x 40 x 25 cm on aircraft with 100+ seats, or 45 x 35 x 20 cm on smaller regional aircraft.
- JAL actively weighs carry-ons at check-in and at the boarding gate — this isn’t a rare spot-check.
- CPAP machines and other essential medical equipment are generally exempt from the standard allowance, but confirm with JAL in advance.
- Oversized or overweight bags get gate-checked, which can mean delays and, if you’ve used your free checked allowance, extra fees.
JAL Carry-On Kg Rules at a Glance
Japan Airlines lets you bring 2 carry-on items, but they must stay within a combined 10 kg (22 lbs) limit for every cabin class, including Business and First. Your larger bag can’t exceed 55 x 40 x 25 cm on most aircraft, and your second item must be a personal piece like a handbag or laptop bag that fits under the seat in front of you. If you rely on a CPAP machine or other essential medical equipment, you can typically bring it in addition to the standard allowance, though it’s worth confirming with JAL before departure. Stay strict with size and weight rules so your bags stay with you, not in the hold.
What Size Carry-On Does JAL Allow?
- One standard carry-on bag up to 55 x 40 x 25 cm on aircraft with 100 or more seats.
- A reduced size of 45 x 35 x 20 cm applies on smaller aircraft with fewer than 100 seats — check your aircraft type for regional or island routes.
- One personal item, such as a handbag, laptop bag, or small backpack, that fits under the seat.
- Both bags together must not exceed 10 kg.
- Bags over the limit may be moved to the hold at check-in or the gate.
Note: Total dimensions include handles, casters, and wheels, so measure your bag fully assembled — not just the shell — before you head to the airport.
How Much Can Your Personal Item Weigh?
Your personal item doesn’t have a separate weight limit on Japan Airlines, but it still counts toward the overall 10 kg allowance shared with your carry-on bag. There’s no strict standalone check for the personal item alone, but it needs to be light enough to lift, stow, and move through the cabin easily, and it must fit under the seat in front of you without crowding your legs. A handbag, laptop bag, small backpack, or a CPAP machine all typically qualify.
What Qualifies as JAL Carry-On Baggage?
JAL lets you board with two carry-on items, as long as both together stay within a 10 kg total weight limit. One must be your personal item, like a handbag or laptop bag, while the second is your standard carry-on bag.
- One personal item that fits under the seat
- One standard carry-on bag
- 10 kg combined weight for both items
- 55 x 40 x 25 cm max for the standard bag (45 x 35 x 20 cm on smaller aircraft)
- CPAP machines and similar essential medical items generally allowed in addition to the standard allowance
At a Glance
| Items Allowed | 1 personal item + 1 standard carry-on bag |
| Combined Weight Limit | 10 kg (22 lbs) |
| Standard Bag Size (100+ seat aircraft) | 55 x 40 x 25 cm |
| Standard Bag Size (under 100 seats) | 45 x 35 x 20 cm |
JAL Carry-On Rules for Medical Gear
When you need to travel with essential medical gear, Japan Airlines lets you bring it on board, including items like CPAP machines. These typically receive an exemption from the standard 10 kg carry-on limit. Keep the gear within cabin size limits, pack it so you can reach it quickly once you’re seated, and notify JAL in advance for larger items.
Pro Tip: Contact JAL ahead of your flight to confirm your medical device qualifies for the exemption — this avoids any surprises at check-in, especially for bulkier equipment.
Which Carry-On Items Need Special Screening?
Certain carry-on items need extra attention at security and may be screened separately before you board.
- Laptops and tablets: place them out for separate screening.
- Liquids over 100 ml: follow the 3-1-1 rule in a quart-sized bag.
- Scissors and knives: these prohibited items won’t stay in your carry-on.
- CPAP machines: allowed, but expect extra screening.
- Duty-free purchases: keep receipts handy, since rules may require checks.
When Does JAL Check Carry-On Bags at the Gate?
At the gate, Japan Airlines may ask to check your carry-on if it’s too large, too heavy, or won’t fit once cabin space gets tight. JAL enforces the 10 kg combined weight limit and the 55 x 40 x 25 cm size limit closely — staff weigh bags at check-in and again at the gate, which is stricter enforcement than many US or European carriers use.
Warning: JAL is known for actively weighing carry-on bags at both check-in and the boarding gate. If your bags are found overweight at the gate, you’ll need to check them on the spot — pack light to avoid delays and possible excess baggage fees.
Do JAL Carry-On Rules Change by Route?
JAL’s carry-on rules stay largely the same across routes, so you can generally expect the same two-item allowance and 10 kg combined weight limit whether flying domestically or internationally.
- Standard bag: 55 x 40 x 25 cm on larger aircraft, 45 x 35 x 20 cm on smaller ones.
- One personal item, like a laptop bag, in addition.
- Restrictions on prohibited items apply everywhere.
- If your flight is operated by a partner airline under a JAL flight number, that carrier’s baggage rules may apply instead — check your ticket confirmation.
- Check your specific aircraft type before you travel, especially for smaller regional routes.
How to Pack Within JAL Carry-On Limits
To stay within JAL’s carry-on limits, treat your allowance as two carefully chosen items with a combined weight of 10 kg. Pack your standard bag so it stays within 55 x 40 x 25 cm, and choose a personal item — backpack, handbag, or laptop bag — that fits under the seat. Use packing cubes to compress clothing, keep heavier items in your checked bag if you’re close to the limit, and keep medications and travel documents within easy reach for security.
Frequently Asked Questions
How Strict Is JAL With Carry-On?
JAL is quite strict — staff weigh bags at both check-in and the gate, so following the 10 kg combined weight limit and 55 x 40 x 25 cm size limit closely will save you from a gate check or fee.
What Are the New Rules for Carry-On Luggage in 2026?
You can bring two carry-on items in 2026: one personal item plus one standard bag, with a combined weight that can’t exceed 10 kg. The standard bag must stay within 55 x 40 x 25 cm on most aircraft (45 x 35 x 20 cm on smaller planes).
What Toiletries Are Not Allowed on a Plane?
Liquids over 100 ml aren’t allowed in carry-on, including shampoo, conditioner, lotion, perfume, toothpaste, and gels. Aerosol sprays, shaving foam, and other flammable beauty products are also restricted.
What Happens if My Carry-On Bag Is More Than 10kg?
You’ll need to check it, which can mean an excess baggage fee if you’ve already used your free checked allowance. Weigh your bag at home before you leave to avoid this at the gate.
Conclusion
When you pack for JAL, treat your carry-on limits as fixed: 10 kg combined across two items, with a 55 x 40 x 25 cm cap on your standard bag (smaller on regional aircraft). Watch your personal item, flag any medical gear before you fly, and expect JAL to weigh your bags at both check-in and the gate. Pack smart, and you’ll clear boarding without a last-minute scramble.
Sources
- JAL Official — Carry-on Baggage — confirms the two-item, 10kg combined allowance and personal item rules
- JAL Official — Baggage Size and Weight — confirms standard bag weight and size conditions
- JAL Official — Checked Baggage — checked baggage allowances and excess fee context