Open your favorite search engine and search for "book plane tickets online" or "cheap plane tickets." The search will produce a list of sites that offer plane tickets. Generally, the sites on the first page of results are the most reliable.
Choose any website of your choice for the tickets. Browse the chosen site for the booking section which includes the "to and from" airports and the date of the flight. For many sites, this section is in the top left corner of the page.
Select the outgoing and incoming airports, along with the date you wish to leave and return. If traveling with multiple people, seniors or children, specify this in the booking section. Click the link to search for flights.
Browse the flight results to find a desirable flight. Take note of the price, leaving and arriving times as well as any layovers. Weigh the options to find the best flight for your needs.
Complete the checkout process according to the directions for your chosen site. You must use a debit or credit card to book tickets on most sites.