Transport: Everything you need to know about the new express line 9517 connecting to Roissy CDG Airport

The RoissyBus will cease operations on March 1, 2026. Starting from this date, it will no longer be possible to take this express bus service from Place de l’Opéra in Paris to reach Charles de Gaulle Airport. But what are the alternatives for getting to Roissy CDG Airport, aside from the RER B? From March 1, 2026, travelers—whether tourists or Parisians—will be able to hop aboard a new express bus, the 9517.

This new bus route aims to connect the bustling city of Paris with the renowned airport in the Val-d’Oise region. Equipped with the same buses used for the RoissyBus, the line 9517 will run between Argenteuil and Roissypôle—just a short walk from the airport, via Saint-Denis. According to Île-de-France Mobilités, "it will offer a direct route between Saint-Denis-Pleyel and Roissy." Travel time will vary depending on traffic conditions, but on average, the journey from Saint-Denis Pleyel station to the airport should take around 30 minutes.

So, where is the bus 9517 stop? What are its operating hours and fares? Here’s everything you need to know about this new express line, which will start running from March 1, 2026.

Line 9517: Stop locations and schedules

For passengers wishing to reach Roissy CDG from the city center, the recommended route is to take the Line 14 metro to Saint-Denis - Pleyel. This station is also accessible via the Line 13 metro, as well as the RER D and buses 139 and 255. From Saint-Denis - Pleyel, travelers can then board the 9517 bus for a direct route to Roissypôle.

Regarding schedule, Île-de-France Mobilités (IDFM) announced the line will run every day from 5:20 a.m. to 12:30 a.m. How often will it run? During weekdays, buses will depart every 15 minutes during rush hours and every 30 minutes off-peak. On Saturdays and Sundays, the service will operate every 20 minutes during the day and every 30 minutes in the evening.

What fares apply to boarding the bus 9517?

And what ticket should you buy, and how much does a ride cost on the 9517? IDFM specifies that this line will be accessible using a Bus-Tram Ticket (costing 2.05 euros each), or with an annual or monthly Navigo pass.