The RER A train, which connects Disneyland Paris (Marne-la-Vallée/Chessy station) to central Paris, typically runs its last service around 12:20 AM to 12:30 AM. Because Disney's nighttime spectaculars (like the drone shows and fireworks) usually finish by 11:30 PM, this provides a safe buffer for guests to walk to the station. However, it is vital to check the real-time "Transilien" or RATP app, especially on weekends or during "Planned Works" in 2026, which can occasionally move the last train earlier or replace it with a "Noctilien" (night bus). The journey back to central stations like Châtelet-Les Halles takes approximately 40 to 45 minutes. If you miss the last RER, you will have to rely on the Noctilien N130 bus, which runs much less frequently and takes significantly longer, or a rideshare service like Uber/G7, which can cost €80–€120 at that hour. Always verify the station's digital display upon arrival in the morning to confirm the evening's "Dernier Train" (Last Train) time.