If any of the following apply, you should contact the Delta Airlines customer service department to change or cancel your flight:

There is a problem with the official Delta Airlines website, making it impossible for you to change or cancel a flight on your own.

attempting to change a flight but being unable to view eCredit. when other airlines issue tickets for a new flight. Enhanced tickets purchased using miles or other discount coupons. a grownup going with a baby in their arms.