RER UPIR21

RER

Marne-la-Vallée - ChessyCergy le Haut

Passages not confirmedTimes reported by the data source. Passages are not confirmed.

Historical average delay — home ranking

+1.3 min

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: 3. Calculated on: 9/11/2026, 1:00:25 AM (Europe/Paris).

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

Calculation window: 8/12/2026, 1:00:25 AM – 9/11/2026, 1:00:25 AM (Europe/Paris).

Runs in the window: 4
Events confirmed by the source: 0
Events predicted by the source: 0
Unknown event type: 3
Cancelled runs, excluded: 1
No usable delay, excluded: 0

Latest source timestamp: 9/6/2026, 11:08:28 PM (Europe/Paris).

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

Latest available run: these times are historical.

Stops on the latest run

Marne la Vallée - Chessy
Departure
Scheduled time21:44
Provenance unavailable21:45
Val d'Europe
Arrival
Scheduled time21:46
Provenance unavailable21:46
Departure
Scheduled time21:47
Provenance unavailable21:48
Bussy-Saint-Georges
Arrival
Scheduled time21:50
Provenance unavailable21:51
Departure
Scheduled time21:51
Provenance unavailable21:52
Torcy
Arrival
Scheduled time21:54
Provenance unavailable21:55
Departure
Scheduled time21:55
Provenance unavailable21:56
Lognes
Arrival
Scheduled time21:56
Provenance unavailable21:57
Departure
Scheduled time21:57
Provenance unavailable21:58
Noisiel
Arrival
Scheduled time21:58
Provenance unavailable21:59
Departure
Scheduled time21:59
Provenance unavailable22:00
Noisy-le-Grand Champs
Arrival
Scheduled time22:01
Provenance unavailable22:01
Departure
Scheduled time22:01
Provenance unavailable22:03
Noisy-le-Grand - Mont d'Est
Arrival
Scheduled time22:04
Provenance unavailable22:04
Departure
Scheduled time22:04
Provenance unavailable22:05
Bry-sur-Marne
Arrival
Scheduled time22:06
Provenance unavailable22:07
Departure
Scheduled time22:07
Provenance unavailable22:08
Neuilly-Plaisance
Arrival
Scheduled time22:08
Provenance unavailable22:09
Departure
Scheduled time22:09
Provenance unavailable22:10
Val de Fontenay
Arrival
Scheduled time22:11
Provenance unavailable22:11
Departure
Scheduled time22:12
Provenance unavailable22:12
Vincennes
Arrival
Scheduled time22:16
Provenance unavailable22:15
Departure
Scheduled time22:16
Provenance unavailable22:16
Nation
Arrival
Scheduled time22:19
Provenance unavailable22:18
Departure
Scheduled time22:19
Provenance unavailable22:19
Paris Gare de Lyon
Arrival
Scheduled time22:22
Provenance unavailable22:21
Departure
Scheduled time22:22
Provenance unavailable22:23
Châtelet les Halles
Arrival
Scheduled time22:25
Provenance unavailable22:25
Departure
Scheduled time22:26
Provenance unavailable22:27
Auber
Arrival
Scheduled time22:27
Provenance unavailable22:28
Departure
Scheduled time22:28
Provenance unavailable22:29
Charles-de-Gaulle Étoile
Arrival
Scheduled time22:31
Provenance unavailable22:31
Departure
Scheduled time22:31
Provenance unavailable22:33
La Grande Arche de la Défense
Arrival
Scheduled time22:35
Provenance unavailable22:36
Departure
Scheduled time22:36
Provenance unavailable22:37
Nanterre Préfecture - RER
Arrival
Scheduled time22:38
Provenance unavailable22:38
Departure
Scheduled time22:40
Provenance unavailable22:41
Houilles - Carrières-sur-Seine
Arrival
Scheduled time22:43
Provenance unavailable22:44
Departure
Scheduled time22:44
Provenance unavailable22:44
Sartrouville
Arrival
Scheduled time22:47
Provenance unavailable22:47
Departure
Scheduled time22:47
Provenance unavailable22:48
Maisons-Laffitte
Arrival
Scheduled time22:49
Provenance unavailable22:49
Departure
Scheduled time22:49
Provenance unavailable22:50
Achères Ville
Arrival
Scheduled time22:55
Provenance unavailable22:56
Departure
Scheduled time22:55
Provenance unavailable22:56
Conflans Fin d'Oise
Arrival
Scheduled time22:58
Provenance unavailable22:59
Departure
Scheduled time22:58
Provenance unavailable22:59
Neuville Université
Arrival
Scheduled time23:01
Provenance unavailable23:02
Departure
Scheduled time23:01
Provenance unavailable23:02
Cergy Préfecture
Arrival
Scheduled time23:04
Provenance unavailable23:06
Departure
Scheduled time23:04
Provenance unavailable23:06
Cergy Saint-Christophe
Arrival
Scheduled time23:08
Provenance unavailable23:09
Departure
Scheduled time23:08
Provenance unavailable23:10
Cergy le Haut
Arrival
Scheduled time23:11
Provenance unavailable23:13

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.

Cancelled runs are excluded from the punctuality calculation.

runs reported on time—

average delay+0.5 min

max delay+3 min

runs reported3

cancelled runs1

stops28

Delay values

DateDelay (min)

2026-08-290.8518518518518519

2026-09-050.21428571428571427

2026-09-060.5357142857142857

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 - Chessy—21:44

Val d'Europe21:4621:47

Bussy-Saint-Georges21:5021:51

Torcy21:5421:55

Lognes21:5621:57

Noisiel21:5821:59

Noisy-le-Grand 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

Paris Gare de Lyon22:2222:22

Châtelet les Halles22:2522:26

Auber22:2722:28

Charles-de-Gaulle Étoile22:3122:31

La Grande Arche de la Défense22:3522:36

Nanterre Préfecture - RER22:3822:40

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 Haut23:11—

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, every run of RER UPIR21 was cancelled (1 run): punctuality cannot be established.

Other trains on this line

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

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