Visit the official Delta Airlines Booking website in your browser. Then, select Manage Bookings from the drop-down menu in the My Trips options.
The next screen will appear on the next screen; type in your booking number in the appropriate box.
Then, enter the primary passenger's name and initials from the reservation.
For a complete list of the flights you have, visit the search page of Delta.
Once you've done that, you'll be able to control any flight you want to in your schedule.
You can change your flight reservation once you've chosen a date.
You'll need to pay additional costs to handle the Delta Airline Flights reservation.