RER BMON21

RER

Marne-la-Vallée - ChessyLa Défense

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

Historical average delay — home ranking

+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: 4. 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: 6
Events confirmed by the source: 0
Events predicted by the source: 1
Unknown event type: 3
Cancelled runs, excluded: 2
No usable delay, excluded: 1

Latest source timestamp: 9/10/2026, 8:34:34 AM (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 time07:40
Predicted by the source07:41(+1′)
Val d'Europe
Arrival
Scheduled time07:42
Predicted by the source07:42(0′)
Departure
Scheduled time07:43
Predicted by the source07:43(0′)
Bussy-Saint-Georges
Arrival
Scheduled time07:46
Predicted by the source07:46(0′)
Departure
Scheduled time07:47
Predicted by the source07:47(0′)
Torcy
Arrival
Scheduled time07:50
Predicted by the source07:50(0′)
Departure
Scheduled time07:51
Predicted by the source07:51(0′)
Lognes
Arrival
Scheduled time07:53
Predicted by the source07:52(-1′)
Departure
Scheduled time07:53
Predicted by the source07:54(+1′)
Noisy-le-Grand Champs
Arrival
Scheduled time07:57
Predicted by the source07:56(-1′)
Departure
Scheduled time07:57
Predicted by the source07:58(+1′)
Noisy-le-Grand - Mont d'Est
Arrival
Scheduled time08:00
Predicted by the source07:59(-1′)
Departure
Scheduled time08:00
Predicted by the source08:01(+1′)
Bry-sur-Marne
Arrival
Scheduled time08:02
Predicted by the source08:02(0′)
Departure
Scheduled time08:03
Predicted by the source08:04(+1′)
Neuilly-Plaisance
Arrival
Scheduled time08:04
Predicted by the source08:04(0′)
Departure
Scheduled time08:05
Predicted by the source08:06(+1′)
Val de Fontenay
Arrival
Scheduled time08:07
Predicted by the source08:07(0′)
Departure
Scheduled time08:08
Predicted by the source08:10(+2′)
Vincennes
Arrival
Scheduled time08:12
Predicted by the source08:13(+1′)
Departure
Scheduled time08:12
Predicted by the source08:14(+2′)
Nation
Arrival
Scheduled time08:15
Predicted by the source08:16(+1′)
Departure
Scheduled time08:16
Predicted by the source08:18(+2′)
Paris Gare de Lyon
Arrival
Scheduled time08:18
Predicted by the source08:19(+1′)
Departure
Scheduled time08:19
Predicted by the source08:21(+2′)
Châtelet les Halles
Arrival
Scheduled time08:22
Predicted by the source08:23(+1′)
Departure
Scheduled time08:23
Predicted by the source08:25(+2′)
Auber
Arrival
Scheduled time08:25
Predicted by the source08:26(+1′)
Departure
Scheduled time08:25
Predicted by the source08:28(+3′)
Charles-de-Gaulle Étoile
Arrival
Scheduled time08:28
Predicted by the source08:29(+1′)
Departure
Scheduled time08:29
Predicted by the source08:31(+2′)
La Grande Arche de la Défense
Arrival
Scheduled time08:32
Predicted by the source08:35(+3′)

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+1.7 min

max delay+6 min

runs reported4

cancelled runs2

stops17

Delay values

DateDelay (min)

2026-09-074.705882352941177

2026-09-080.47058823529411764

2026-09-090.35294117647058826

2026-09-101.411764705882353

Typical schedule

Stops and times of RER BMON21 from Marne-la-Vallée - Chessy to La Défense on a typical weekday. Actual times may vary.

StopArrivalDeparture

Marne la Vallée - Chessy—07:40

Val d'Europe07:4207:43

Bussy-Saint-Georges07:4607:47

Torcy07:5007:51

Lognes07:5307:53

Noisy-le-Grand Champs07:5707:57

Noisy-le-Grand - Mont d'Est08:0008:00

Bry-sur-Marne08:0208:03

Neuilly-Plaisance08:0408:05

Val de Fontenay08:0708:08

Vincennes08:1208:12

Nation08:1508:16

Paris Gare de Lyon08:1808:19

Châtelet les Halles08:2208:23

Auber08:2508:25

Charles-de-Gaulle Étoile08:2808:29

La Grande Arche de la Défense08:32—

Frequently asked questions

What time does RER BMON21 depart?

RER BMON21 departs from Marne la Vallée - Chessy at 07:40 (typical schedule from reported times). Actual times may vary.

How many stops does RER BMON21 make?

RER BMON21 connects Marne-la-Vallée - Chessy to La Défense with 17 stops.

Is RER BMON21 on time?

Over the reported runs, every run of RER BMON21 was cancelled (2 runs): 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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