Begin your search for low-cost Delta Airlines flights by going to the airline's website and selecting the appropriate booking option. Fill in your departure and arrival dates and timings after selecting a one-way or round trip. The passenger's age must now be selected by clicking on the passenger's description. Before using the flight search option on the same page, double-check that all travelers' names are included. Choose Delta Flights Booking after you've compared the two. Once you are done with it, proceed further. You must now choose another option, which will urge you to choose a bank and enter your card information.