Delta Airlines flight change policy is very flexible in providing its customer with the option to make changes to existing reservations. Delta change flight is subject to availability of the seats and can be done till check-in. It can be requested both online or offline. Delta ticket changes can be made through Delta Airlines’ official website or by calling Delta flight change phone number. The same changes can also be made using the official Delta Airlines application for android or IOS. If Delta Change Flight is requested over the call there will be a service fee of $25 for each ticket that will be applied additionally.