RER NATO42

RER

Cergy le HautBoissy-Saint-Léger

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

Historical average delay — home ranking

+2.8 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: 6. 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: 8
Events confirmed by the source: 0
Events predicted by the source: 1
Unknown event type: 5
Cancelled runs, excluded: 2
No usable delay, excluded: 1

Latest source timestamp: 9/10/2026, 10:45:51 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

Cergy le Haut
Departure
Scheduled time09:22
Predicted by the source09:24(+2′)
Cergy Saint-Christophe
Arrival
Scheduled time09:24
Predicted by the source09:26(+2′)
Departure
Scheduled time09:25
Predicted by the source09:27(+2′)
Cergy Préfecture
Arrival
Scheduled time09:28
Predicted by the source09:30(+2′)
Departure
Scheduled time09:29
Predicted by the source09:30(+1′)
Neuville Université
Arrival
Scheduled time09:32
Predicted by the source09:33(+1′)
Departure
Scheduled time09:32
Predicted by the source09:34(+2′)
Conflans Fin d'Oise
Arrival
Scheduled time09:35
Predicted by the source09:36(+1′)
Departure
Scheduled time09:35
Predicted by the source09:36(+1′)
Achères Ville
Arrival
Scheduled time09:37
Predicted by the source09:39(+2′)
Departure
Scheduled time09:38
Predicted by the source09:39(+1′)
Maisons-Laffitte
Arrival
Scheduled time09:43
Predicted by the source09:45(+2′)
Departure
Scheduled time09:44
Predicted by the source09:44(0′)
Sartrouville
Arrival
Scheduled time09:45
Predicted by the source09:47(+2′)
Departure
Scheduled time09:46
Predicted by the source09:53(+7′)
Houilles - Carrières-sur-Seine
Arrival
Scheduled time09:48
Predicted by the source09:56(+8′)
Departure
Scheduled time09:49
Predicted by the source09:56(+7′)
Nanterre Préfecture - RER
Arrival
Scheduled time09:53
Predicted by the source10:00(+7′)
Departure
Scheduled time09:55
Predicted by the source10:03(+8′)
La Grande Arche de la Défense
Arrival
Scheduled time09:57
Predicted by the source10:04(+7′)
Departure
Scheduled time09:58
Predicted by the source10:05(+7′)
Charles-de-Gaulle Étoile
Arrival
Scheduled time10:01
Predicted by the source10:07(+6′)
Departure
Scheduled time10:02
Predicted by the source10:08(+6′)
Auber
Arrival
Scheduled time10:04
Predicted by the source10:10(+6′)
Departure
Scheduled time10:05
Predicted by the source10:11(+6′)
Châtelet les Halles
Arrival
Scheduled time10:07
Predicted by the source10:12(+5′)
Departure
Scheduled time10:08
Predicted by the source10:13(+5′)
Paris Gare de Lyon
Arrival
Scheduled time10:10
Predicted by the source10:15(+5′)
Departure
Scheduled time10:11
Predicted by the source10:16(+5′)
Nation
Arrival
Scheduled time10:13
Predicted by the source10:18(+5′)
Departure
Scheduled time10:13
Predicted by the source10:19(+6′)
Vincennes
Arrival
Scheduled time10:16
Predicted by the source10:20(+4′)
Departure
Scheduled time10:16
Predicted by the source10:21(+5′)
Fontenay-sous-Bois
Arrival
Scheduled time10:19
Predicted by the source10:23(+4′)
Departure
Scheduled time10:19
Predicted by the source10:24(+5′)
Nogent-sur-Marne
Arrival
Scheduled time10:21
Predicted by the source10:25(+4′)
Departure
Scheduled time10:21
Predicted by the source10:26(+5′)
Joinville-le-Pont
Arrival
Scheduled time10:23
Predicted by the source10:27(+4′)
Departure
Scheduled time10:23
Predicted by the source10:28(+5′)
Saint-Maur-des-Fossés - Créteil
Arrival
Scheduled time10:25
Predicted by the source10:29(+4′)
Departure
Scheduled time10:26
Predicted by the source10:30(+4′)
Le Parc de Saint-Maur RER
Arrival
Scheduled time10:27
Predicted by the source10:31(+4′)
Departure
Scheduled time10:27
Predicted by the source10:32(+5′)
Champigny
Arrival
Scheduled time10:29
Predicted by the source10:33(+4′)
Departure
Scheduled time10:30
Predicted by the source10:34(+4′)
La Varenne Saint-Hilaire - Chennevières-sur-Marne
Arrival
Scheduled time10:31
Predicted by the source10:35(+4′)
Departure
Scheduled time10:32
Predicted by the source10:37(+5′)
Sucy-en-Brie - Bonneuil-sur-Marne
Arrival
Scheduled time10:35
Predicted by the source10:40(+5′)
Departure
Scheduled time10:35
Predicted by the source10:41(+6′)
Boissy-Saint-Léger
Arrival
Scheduled time10:38
Predicted by the source10:45(+7′)

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+1.6 min

max delay+8 min

runs reported6

cancelled runs2

stops26

Delay values

DateDelay (min)

2026-08-27-0.48

2026-08-284.16

2026-09-07-0.23076923076923078

2026-09-08-0.16

2026-09-091.8076923076923077

2026-09-104.5

Typical schedule

Stops and times of RER NATO42 from Cergy le Haut to Boissy-Saint-Léger on a typical weekday. Actual times may vary.

StopArrivalDeparture

Cergy le Haut—09:22

Cergy Saint-Christophe09:2409:25

Cergy Préfecture09:2809:29

Neuville Université09:3209:32

Conflans Fin d'Oise09:3509:35

Achères Ville09:3709:38

Maisons-Laffitte09:4309:44

Sartrouville09:4509:46

Houilles - Carrières-sur-Seine09:4809:49

Nanterre Préfecture - RER09:5309:55

La Grande Arche de la Défense09:5709:58

Charles-de-Gaulle Étoile10:0110:02

Auber10:0410:05

Châtelet les Halles10:0710:08

Paris Gare de Lyon10:1010:11

Nation10:1310:13

Vincennes10:1610:16

Fontenay-sous-Bois10:1910:19

Nogent-sur-Marne10:2110:21

Joinville-le-Pont10:2310:23

Saint-Maur-des-Fossés - Créteil10:2510:26

Le Parc de Saint-Maur RER10:2710:27

Champigny10:2910:30

La Varenne Saint-Hilaire - Chennevières-sur-Marne10:3110:32

Sucy-en-Brie - Bonneuil-sur-Marne10:3510:35

Boissy-Saint-Léger10:38—

Frequently asked questions

What time does RER NATO42 depart?

RER NATO42 departs from Cergy le Haut at 09:22 (typical schedule from reported times). Actual times may vary.

How many stops does RER NATO42 make?

RER NATO42 connects Cergy le Haut to Boissy-Saint-Léger with 26 stops.

Is RER NATO42 on time?

Over the reported runs, every run of RER NATO42 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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