Excursion companies generally offer a wider choice of tours and more frequent departures during high season (between 1 April and 31 October). Cruises on the Seine river also operate more regularly and offer an extended timetable during this period.
Low season is between 1 November and 31 March.
There are several companies in Paris offering sightseeing tours on double-decker buses, some open-top some not, giving you complete freedom for your city tours.
These buses tour around the principal museums and monuments, major department stores and stations. Tickets for 1 day or 2 consecutive days leave you free to get on and off the bus as you like. On board, the Paris sights are described to you by audio-guides in several languages.
They operate every day, Sundays and holidays included.
The first departure sets off from each stop around 10am, and the last leaves around 6.30pm or 8pm between April and October. Departures are approximately every 10 to 30 minutes and, depending on the company, circuits last 1 or 2 hours if you stay on the bus.
Prices range from €22 to €28 for 1 or 2 days depending on the company, children between 4 and 11 or 12 years pay half price, sometimes even less, and places are free for children under 4 years old. Tickets can be purchased directly from the driver or in the Paris Convention and Visitors Bureau welcome centres.