2025 is already drawing to a close. But before we ring in 2026, Paris and the Île-de-France region have some festive surprises in store for you, from the final days of the Christmas markets, to ice rinks, light displays, and family-friendly winter walks. However, if you’re planning to explore Île-de-France using public transport during these Christmas holidays, it’s best to be prepared. Transilien SNCF warns that service will be adjusted during this period. Specifically, fewer trains will be running from December 22, 2025, to January 2, 2026, on several RER lines.
In detail, the RER lines C, D, and E are affected by this service adjustment. "During the school holidays from December 22 to January 2, transportation services on your line will be adapted: some trains will not run," states the Transilien SNCF website regarding the RER C. The same notice applies to RER D and E as well.
What about the Transilien lines? For now, only two lines are affected by this
As a result, to better prepare for their journey and before heading to the station, Transilien SNCF advises travelers to check the schedules via the Île-de-France Mobilités app, on the Transilien.com website, on SNCF Connect, or through their mobility app.
Additionally, it's important to note that major maintenance work will disrupt metro and RER services in 2026. Notably, the lines 4, 8, and 12 will be affected, as well as key RER lines such as the RER A, RER B, and RER C.
Official website
www.transilien.com
