To change your Oman Air travel dates, manage your booking online or via the mobile app. An Oman Air Ticket Date Change Fee may apply, depending on your fare type and the new flight's availability. For assistance, contact Oman Air customer service at +1-877-350-4939. https://www.lowfaremart.com/blogs/can-i-change-my-oman-air-flight-date-for-free