Ethiopian Airlines customer service is open 24/7, so customers can contact them at any time if they want to bet on their flight, such as changing schedules or destinations. Our customer service department will cancel your flight immediately and refunds will be processed within 3-4 business days. Ethiopian Airlines Cancellation and Refund Policy » Notification from Ethiopian Airlines will be sent to the email address provided during booking almost immediately. One hour before scheduled departure, customers can make changes to their flight. For more info Call +1-888-675-7776.