Air Busan does not charge a flat fee for an oversize bag; it charges by the kilogram instead. The rate changes by route. The same overweight suitcase can cost USD 4 a kilogram to Qingdao, or USD 21 a kilogram to Bali.
That detail sits at the center of the Air Busan baggage allowance. It catches more travelers than the size limit does.
What actually fits in the cabin
The free carry-on is one bag per person. It is capped at 10 kilograms. The three sides must add up to no more than 115 centimeters.
Air Busan states the maximums for each side directly: width 40 cm, depth 20 cm, height 55 cm. Wheels and the handle count toward that height. Go over on even one side and the bag is not treated as carry-on at all.
A laptop bag or small handbag rides along for free too. Its three sides just need to total under 60 centimeters. Check any borderline bag against a carry-on size reference before you leave for the airport.
Checked baggage runs on your fare, not a flat rule
This is where the Air Busan baggage allowance gets fare dependent. Domestic no frills and regular tickets include 15 kilograms checked. The domestic Super Special fare includes none at all.
On international routes outside the Americas, Economy and Regular tickets include 15 kilograms for adults and 10 for infants. Each bag has a 203 centimeter linear maximum. Special and event international fares drop to zero included weight, the same trap as the domestic budget fare.
Guam and Saipan work differently again. Both use a flat allowance of 23 kilograms per bag rather than a shared weight pool. Check your fare code before you assume anything is included.
Excess baggage: priced by the kilogram, and it adds up fast
Domestic overage runs KRW 3,000 per kilogram, or KRW 2,000 on the Jeju route. International rates climb from there. Japan sits near USD 12 per kilogram.
Most of Northeast Asia and Southeast Asia land between USD 15 and USD 18 per kilogram. The Bali route tops out near USD 21 per kilogram. Busan to Qingdao and Busan to Da Nang or Cebu are discounted outliers, at USD 4 and USD 5 per kilogram.
Run your own numbers through the baggage cost tool before you pack that extra pair of shoes.
Guam flights switch to a flat structure instead. Exceeding the piece limit costs USD 50, and exceeding the weight limit costs another USD 50. These figures come from Air Busan’s own excess baggage page, current for tickets issued from September 8, 2025.
What travelers actually run into at check-in
A traveler review that gave Air Busan one star describes a charge near USD 8.50 per kilogram for a second suitcase. The counter would not let a second piece through as carry-on at any price. It had to be checked instead.
That is the Air Busan baggage allowance working as designed, not a rogue agent.
Facebook groups for travelers in Korea flag a detail that is easy to miss on Air Busan’s own page. The carry-on and the small bag or backpack get weighed together, against the same 10 kilogram limit. They are not weighed separately.
Enforcement is not consistent trip to trip. Some travelers say gate staff waved a combined carry-on and personal item through with no scale in sight. Others watched the traveler ahead of them get pulled aside and charged.
Pack to the limit rather than counting on a lenient agent.
A merger is coming, but today’s rules still apply
Air Busan and its sister low-cost carrier Air Seoul are being folded into Jin Air. All three sit under the Korean Air group. The combined carrier is targeted to launch under the Jin Air name in March 2027.
The deal still needs shareholder and regulatory sign off.
Nothing changes for a booking made today. Fly Air Busan before that date, and this page reflects the rules you will actually meet. Compare it against other carriers in the airline directory while the two brands still fly on their own.
The bottom line
The Air Busan baggage allowance rewards packing to exactly 10 kilograms in the cabin. It punishes a budget fare booked without a checked bag added on. Weigh your carry-on and your personal item together before you leave the house.
Check your fare code against the baggage fees a route actually charges. If you also fly Korean Air or Asiana Airlines out of the same airports, do not assume their rules carry over. Neither sister carrier prices excess baggage by the kilogram the way Air Busan does.
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