CDG: the RER B is the public backbone
RER B links CDG 1 and CDG 2 airport stations with Gare du Nord and Châtelet–Les Halles. Check the route from your terminal, works and required airport ticket at https://www.iledefrance-mobilites.fr/. Keep the ticket until exit; total time includes walking and connections.
Orly: Line 14 extension changes the picture
For CDG on RER B and Orly on Line 14, use an appropriate airport ticket or eligible pass, not an ordinary Metro-Train-RER ticket. Check Orlyval conditions and accepted ticket media too: do not assume bank-card tap-in works at every gate. Consult Île-de-France Mobilités.
Buses and shuttle options worth knowing
Do not plan around the former Roissybus or Orlybus services. From CDG, compare RER B with alternatives in the official planner; from Orly, consider Line 14 or Orlyval with RER B according to destination and ticket. Check your terminal’s route at https://www.ratp.fr/.
Keep it handy while in Paris
- Add it to your home screen: works offline too
- Save your favourite spots
- Turn on ZFE Crit'Air alerts (free)
Official taxi tariffs and what to confirm
Paris taxis use a flat-rate system for airport runs set by the prefecture, displayed inside every licensed vehicle: approximately €56-65 from CDG depending on bank, and about €37-44 from Orly. These cover the vehicle, not per passenger, for up to four people with ordinary luggage. Use only the official rank with marked cars, and confirm the fixed fare with the driver before departing.