The budget-minded or adventurous can easily visit the pyramids at Giza without any external arrangements or aid. However, because the pyramids are in Cairo's suburb of Giza, it requires some use of public transportation. Starting anywhere in Cairo, take Cairo's reliable subway to the Giza station. From the station the pyramids are about 8 km away. Many minibuses, along with public buses 900 and 997, can take you to the entrance from the subway station, and you will find many taxis willing to take you as well. Another, more direct option is to take public buses 355 or 357 from Tahrir Square. These buses also pick up from the airport if you would like to go directly from your flight.
A group tour bus removes much of the stress of arranging your own transport. Larger hotels will typically arrange these buses for their guests. You can also arrange an inclusive tour, which will make all hotel and transport arrangements for you. Many international groups arrange tours from across the globe, allowing you to make sure of all the details before you leave for Egypt. Be sure only to book from a reputable agency, as many con artists operate fake tours. Because of the popularity of the pyramids across ages and budgets, many tour groups specialize in specific age groups and travel preferences, making this an option for almost everyone.
Private guides for the pyramids abound in Cairo, and any hotel can arrange these for you if you desire. Be very careful about hiring a guide while in Egypt, as scam artists may attempt to rip you off and give you a poor tour. This can be true even of some hotels and travel agencies in the city. Consider arranging for a guide ahead of time when you plan the rest of your trip through a reputable travel agency. You can also hire a driver to take you from your hotel to the pyramids and back if you would rather view the pyramids by yourself.
Many cruise lines have options that include the pyramids. Almost any major cruise line operating a Mediterranean cruise that takes you to Alexandria or Port Said will have an option to take a shore excursion to the pyramids. This includes Celebrity, Princess and Royal Caribbean. Smaller companies and boats also cruise the Nile itself, allowing you not only to see the pyramids but also Luxor, Aswan, and the other famous sights along the Nile River.