RER UPIR21

RER
Marne-la-Vallée - ChessyCergy le Haut

Next scheduled journey — timetable: 2026-11-01

Punctuality : 100% on time · average delay +0.8 min · over 9 observed days

Usually

Usual times are calculated from past runs. See the selected run’s timetable below.

Departs
21:44
Arrives
23:11
Journey time
1 h 27
Stops
28
Runs
Weekends

Next scheduled journey — timetable

  1. Marne-la-Vallée - ChessyScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  2. Val d'EuropeScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  3. Bussy-Saint-GeorgesScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  4. TorcyScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  5. LognesScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  6. NoisielScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  7. Noisy - ChampsScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  8. Noisy-le-Grand - Mont d'EstScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  9. Bry-sur-MarneScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  10. Neuilly-PlaisanceScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  11. Val de FontenayScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  12. VincennesScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  13. NationScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  14. Gare de LyonScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  15. Châtelet - Les HallesScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  16. AuberScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  17. Charles de Gaulle - ÉtoileScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  18. La DéfenseScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  19. Nanterre - PréfectureScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  20. Houilles - Carrières-sur-SeineScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  21. SartrouvilleScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  22. Maisons-LaffitteScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  23. Achères VilleScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  24. Conflans Fin d'OiseScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  25. Neuville - UniversitéScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  26. Cergy PréfectureScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  27. Cergy Saint-ChristopheScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  28. Cergy le HautScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time

Punctuality of recorded routes

Reported delays per run with a complete route; separate from the ranking sample. A predicted delay does not confirm a passage.

runs reported on time100%
average delay+0.8 min
max delay+4 min
runs reported9
stops28
0m2m5m3/1017/1031/10
Delay values
DateDelay (min)
2026-10-03-0.25
2026-10-040.9642857142857143
2026-10-100.6071428571428571
2026-10-110.9642857142857143
2026-10-170.39285714285714285
2026-10-180.39285714285714285
2026-10-240.8148148148148148
2026-10-252.8518518518518516
2026-10-310.34615384615384615
Historical average delay — home ranking: +0.8 min (over 9 runs)

Average of available delays per run over the 30 days before calculation, with equal weight for each eligible run. This is not the current delay.

Runs used: 9. Calculated on: (Europe/Paris).

This average can be available without a complete route. The route statistics below use only recorded routes with their stops.

Calculation window: 10/2/2026, 12:28:52 AM – 10/31/2026, 11:28:52 PM (Europe/Paris).

Runs in the window
9
Events confirmed by the source
0
Events predicted by the source
9
Unknown event type
0
Cancelled runs, excluded
0
No usable delay, excluded
0

Latest source timestamp: 10/31/2026, 11:07:19 PM (Europe/Paris).

Runs are identified within each source. Identities across sources are kept separate without a proven match. Exclusions can overlap.

Typical schedule

Stops and times of RER UPIR21 from Marne-la-Vallée - Chessy to Cergy le Haut on a typical weekday. Actual times may vary.

StopArrivalDeparture
Marne-la-Vallée - Chessy21:4421:44
Val d'Europe21:4621:47
Bussy-Saint-Georges21:5021:51
Torcy21:5421:55
Lognes21:5621:57
Noisiel21:5821:59
Noisy - Champs22:0122:01
Noisy-le-Grand - Mont d'Est22:0422:04
Bry-sur-Marne22:0622:07
Neuilly-Plaisance22:0822:09
Val de Fontenay22:1122:12
Vincennes22:1622:16
Nation22:1922:19
Gare de Lyon22:2222:22
Châtelet - Les Halles22:2522:26
Auber22:2722:28
Charles de Gaulle - Étoile22:3122:31
La Défense22:3522:36
Nanterre - Préfecture22:3822:40
Houilles - Carrières-sur-Seine22:4322:44
Sartrouville22:4722:47
Maisons-Laffitte22:4922:49
Achères Ville22:5522:55
Conflans Fin d'Oise22:5822:58
Neuville - Université23:0123:01
Cergy Préfecture23:0423:04
Cergy Saint-Christophe23:0823:08
Cergy le Haut23:1123:11

Frequently asked questions

What time does RER UPIR21 depart?

RER UPIR21 departs from Marne-la-Vallée - Chessy at 21:44 (typical schedule from reported times). Actual times may vary.

How many stops does RER UPIR21 make?

RER UPIR21 connects Marne-la-Vallée - Chessy to Cergy le Haut with 28 stops.

Is RER UPIR21 on time?

Over the reported runs, RER UPIR21 was reported on time 100% of runs, with an average delay of 0.8 minutes.

Other trains on this line

Live status and delays for the other trains serving the same stations.

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