Yes, passengers who face sudden urgency due to any reason can cancel their flight with china eastern airlines. Airlines understand and provide flexibility to the passengers to cancel their flight within 24 hours of booking at no extra cost or cancelation charge. At the same time, if you cancel a non-refundable reservation, there is no refund provided by china eastern airlines. To get further details regarding your booking, cancelation, or refund, you can contact the china eastern airline’s customer service team via phone call, live chat, email, or social media.