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The Paris Metro opened on 19 July 1900 and today serves one of the densest urban networks in the world - 16 lines, 302 stations and 226 km of track woven beneath and above the city. Run by RATP, it carries around 1.5 billion journeys a year. The original Art Nouveau entrance canopies designed by Hector Guimard remain one of the most recognisable sights in Paris.
Buy a Métro-Train-RER ticket (€2.55 in 2026) at any station machine or in the Île-de-France Mobilités app. Since the 2025 fare reform one flat-price ticket covers any journey of any length on the Metro, RER and Transilien trains across the whole Île-de-France region - zones no longer matter. Airports are the exception and need a separate ticket.
The old paper magnetic tickets have been phased out in favour of contactless payment and the Navigo Easy card. If you are visiting for a few days, load tickets onto a Navigo Easy card (€2 for the card) at a station machine or use your phone - it works much like a contactless Oyster card.
For a week's stay, buy a Navigo Semaine pass (Monday to Sunday). It covers unlimited travel on the Metro, RER within Paris, bus, tram and suburban trains for a flat weekly price.
Lines are numbered 1 to 14 (with 3bis and 7bis as short branches). Platforms show the train's final destination - always check you are heading the right way before boarding.
The RER (commuter rail) lines A, B, C, D and E share some central stations with the Metro and look similar, but they are separate services. Since 2025 the same Métro-Train-RER ticket covers RER journeys anywhere in Île-de-France - the only exception is the airports, which require the €14 Paris Region Airports ticket.
Download the RATP app or Citymapper before you travel. Both give real-time departure times, service alerts and step-by-step directions across Metro, RER, bus and night bus.
Lines 4, 13 and 9 are the most crowded during weekday rush hours (08:00-09:30 and 17:30-19:30). Line 14 is automated, runs every 85 seconds at peak times and is almost always less packed - use it whenever it fits your route.
Chatelet-Les Halles is the biggest interchange station in the world, connecting five Metro lines with three RER lines under a large shopping complex. Allow at least 10 minutes to make a connection here; the walking distances are long and signage can be confusing.
Many of the best-known sights - the Louvre, Musee d'Orsay, Notre-Dame - have Metro stations named after them or right outside. The Louvre exit inside Palais Royal-Musee du Louvre station leads directly into the museum's underground shopping arcade.
Paris museums and monuments are free to enter on the first Sunday of each month. Plan around this if you want to combine Metro travel with free museum visits.
Keep your ticket until you exit the fare zone - inspectors do check, and the on-the-spot fine for not having a valid ticket is EUR 50.
The night bus network (Noctilien) runs when the Metro closes. Routes are numbered N01 to N145 and can be found on the RATP app. Taxis and ride-hailing apps also work well after midnight.
A single Métro-Train-RER ticket costs EUR 2.55 in 2026 and covers any Metro, RER or Transilien journey across Île-de-France (airports excluded). The Navigo Jour day pass costs EUR 12.30. For longer stays, the Navigo Semaine weekly pass (EUR 32.40, Monday to Sunday) or Navigo Mois monthly pass (EUR 90.80) give unlimited travel on Metro, RER, bus and tram in all zones.
The Paris Metro has 16 lines: numbered 1 to 14 plus two short branch lines called 3bis and 7bis. Line 1 and Line 14 are fully automated and driverless. The network covers 226 km and 302 stations.
Most lines run from around 05:30 until 01:15 the following morning. On Friday and Saturday nights they stay open until 02:15. There is no night Metro service, but the Noctilien night bus network fills the gap.
Take Line 6 to Bir-Hakeim or Champ de Mars-Tour Eiffel on RER C for the closest stop to the base. Trocadero (Line 6 or Line 9) is slightly further but gives the famous elevated view looking across to the tower - ideal for photographs.
The cheapest option is RER B, which runs directly from CDG Terminal 2 to central Paris stations including Gare du Nord, Chatelet-Les Halles and Saint-Michel Notre-Dame. The journey takes around 25-35 minutes. You need the Paris Region Airports ticket (EUR 14), not the standard EUR 2.55 Metro ticket - buy it at the RER platforms inside the terminal or in the Ile-de-France Mobilites app.
Accessibility is the Metro's biggest weakness. Only around 35 stations have step-free access, and most of those are on Line 14 and parts of Lines 1 and 9. The RER A and B lines are better for wheelchair users at most central stations. For fully accessible travel across Paris, the city operates Ile-de-France Mobilites PAM service and the accessible bus network covers most of the city.