Choose an airline that you would like to use for your flight.
Go to your chosen airline's official website.
Go to "Reservations," and then "Book a flight." You will probably have to choose between a round-trip, one-way and a multiple-city flight.
Fill in all the required information. This will be the city/airport code you will be departing from as well as the city/airport code at which you you will be arriving. You will need to fill out the flight date, cabin service preferences and number of passengers.
Enter all the billing information for payment and submit the reservation. You will receive a confirmation via your e-mail address.
Print your tickets from your computer or wait until you get to the airport; it is up to you. Printing them from your home can help save time in case it is busy at the airport or you are running late.