Air Seoul's official baggage policy permits one cabin bag up to 10kg, total dimensions under 115cm and maximum sides 55×40×20cm. If a second small personal item is allowed, both pieces must remain 10kg combined. Adult and child domestic fares, including promotional tickets, list 15kg free checked baggage. Some international promotional fares include no free checked baggage, and regular international allowances differ by route. Child or infant travelers may check one stroller, carry cot or child car seat without charge. Additional bags checked at the boarding gate may incur a separate fee. Verify the allowance for your own fare before travel.