To ride the Paris Métro, city buses, trams, RER trains, SNCF trains, funiculars and other forms of Paris transport, you need a titre de transport (a ticket or transit pass).

Single Métro tickets, called ticket t+, on sale in all but the smallest Métro stations and valid on all Métro (underground train) lines, city bus lines, funiculars and trams, cost 1.70€ at the tarif normal (normal fare), but if you ask for un carnet (unh kahr-NEY, a booklet) you will get ten (loose) tickets for 12.70€, dropping the price per ticket by 25% to 1.27€.

	The iconic ticket t+

For most short-term visitors, un carnet of tickets makes the most sense, but if you're staying for a few days, you may benefit from a different titre de transport, a transit pass.

The Paris Visite card entitles you to unlimited travel on most modes of travel in central Paris for 1, 2, 3 or 5 days, as well as substantial discounts at several Paris museums and attractions, but you must do a good amount of planning and calculating to determine if it makes economic sense for you. More...

For stays of five days or more when you plan to use public transport most days, the weekly Navigo Découverte transit pass can lower your Paris transport costs substantially, and add a big measure of convenience to your city travel. More...

(If you've visited Paris before, you may remember the Carte Orange transit pass. The Carte Orange has been discontinued, and replaced by the Navigo.)

Speaking of tickets, there are a few situations in which you can encounter big problems when moving from the Métro system to the RER suburban train system. Here are the details.