Travelers can cancel their reservation within 24 hours. You may cancel your flight reservation up to 120 minutes before the scheduled departure time. Otherwise, you will incur a cancellation fee while looking at your flight route and destination. No cancellation fee will be charged if the traveler to Cancel Garuda Indonesia Flight within 24 hours of purchasing the ticket. In addition, if the passenger also cancels within 7 days, the airline will charge a cancellation fee. https://www.cancelation-policy.com/garuda-indonesia-cancellation-policy