Asiana airline cancellation policy and fee depends on the place from where did you purchase and what date or time you cancel. For Asiana domestic flight reservation, the cancellation of your ticket should be done before the expiry date of your booking. For international flight reservation, you should cancel your ticket within 30 days from the booking time.
Asiana airline has a no-show penalty for the passengers those who are failed to cancel thier flight reservation. As per the policy, if you fail to cancel your confirmed booking until departure time, then they will charge 100 to 120 USD for international flight and KRW 8,000 for domestic flight in korea. Moreover, if you failed to get onboard even after doing check-in for international flights, then they will charge 300 USD and KRW 300,000 collected in korea.
If you want to change your flight ticket booking, then the changing policy and charge is as per domestic and international flights.
24 hour Cancellation Policy
Asiana airline 24 hour cancellation policy is just like any other airline only. As per the Asiana policy, they allows free cancellation for online flight reservation. But, the 24 hour cancellation policy is valid if you cancel your flight within 24 hours of ticket purchased one week prior to your scheduled flight departure. However, if you cancel your flight ticket after 24 hours, then they will charge cancellation fee.
As per the 24-hour cancellation policy, you can request your refund in your original form of payment. Cancellation and getting refunds can be done through online or telephone methods.
In addition, if you're eligible to getting a refund for cancellation or changing flight reservations, then you can request a refund. it can be done online by going to manage my booking section on their official website.