Is the Metro safe at night?

Yes, it is generally safe until the last train (approx. 1:15 AM on weekdays, 2:15 AM on weekends). Stay aware of pickpockets, especially on lines 1 and 4, and keep your bag in front of you.

Do I need to buy a ticket for the RER to the airport?

Yes. The standard Metro ticket does not cover the RER train to CDG airport. You must buy a specific 'Origine-Destination' ticket for approximately 11.80 euros.

What do I do if I get lost?

Look for the large yellow wall maps at the entrance of every station. They are color-coded by line number and clearly label all stops and transfer points.

Mastering the Paris Métro: A No-Nonsense Guide

Download the Citymapper app for real-time navigation and purchase a Navigo Easy pass to tap-and-go through gates. Avoid paper tickets, as they are being phased out and demagnetize easily in your pocket.

Get the right fare card. Go to any station kiosk and buy a 'Navigo Easy' card for 2 euros. Load it with a 'carnet' (10 tickets) to save about 25% compared to buying single fares.
Use the navigation apps. Download Citymapper or IDF Mobilités. These provide exact platform numbers, which car to board for the fastest transfer, and real-time strike alerts.
Navigate the gates. Tap your pass on the purple reader. Always keep your pass until you exit the station; occasionally, you may need it to exit, and inspectors can ask to see it at any time.
Master the transfers. Follow the pink 'Correspondance' signs. If your line ends, follow the 'Sortie' (exit) signs until you find the new line number. Don't worry about leaving the turnstiles; as long as you don't exit to the street, you remain in the system.

Is the Metro safe at night?: Yes, it is generally safe until the last train (approx. 1:15 AM on weekdays, 2:15 AM on weekends). Stay aware of pickpockets, especially on lines 1 and 4, and keep your bag in front of you.
Do I need to buy a ticket for the RER to the airport?: Yes. The standard Metro ticket does not cover the RER train to CDG airport. You must buy a specific 'Origine-Destination' ticket for approximately 11.80 euros.
What do I do if I get lost?: Look for the large yellow wall maps at the entrance of every station. They are color-coded by line number and clearly label all stops and transfer points.