First, visit the booking website of Delta Airlines and click on the Delta airline flight booking tab showing on the page.Select trip and set your travel date including departure and arrival’s date and time. Now you've got to click on the passenger’s detail during which you've got to pick the age of the passengers.You should not forget to say the name of passengers then click on the flight search button showing on an equivalent page.It will be good to enter the quantity after compared with the opposite one then select your flight to book.Click on the advanced button sort of a meal, entertainment, car on rent, hotel, and so on.Now you've got to click on the opposite option where you'll have a bank choice to mention the cardboard number.Select the quantity and make payment online and then , you'll receive a message of booking on your mobile at the top of the task.