RER ERIO01

RER

Massy - PalaiseauAéroport Charles de Gaulle 2 (Terminal 2)

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

Historical average delay — home ranking

+0.3 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: 6
Events confirmed by the source: 0
Events predicted by the source: 1
Unknown event type: 2
Cancelled runs, excluded: 3
No usable delay, excluded: 0

Latest source timestamp: 9/10/2026, 12:41:12 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

Massy - Palaiseau
Departure
Scheduled time11:34
Predicted by the source11:34(0′)
Massy - Verrières-le-Buisson
Arrival
Scheduled time11:36
Predicted by the source11:36(0′)
Departure
Scheduled time11:36
Predicted by the source11:37(+1′)
Les Baconnets
Arrival
Scheduled time11:38
Predicted by the source11:38(0′)
Departure
Scheduled time11:38
Predicted by the source11:39(+1′)
Fontaine Michalon
Arrival
Scheduled time11:39
Predicted by the source11:39(0′)
Departure
Scheduled time11:39
Predicted by the source11:40(+1′)
Antony
Arrival
Scheduled time11:41
Predicted by the source11:41(0′)
Departure
Scheduled time11:42
Predicted by the source11:42(0′)
La Croix de Berny
Arrival
Scheduled time11:43
Predicted by the source11:42(-1′)
Departure
Scheduled time11:43
Predicted by the source11:44(+1′)
Parc de Sceaux
Arrival
Scheduled time11:45
Predicted by the source11:44(-1′)
Departure
Scheduled time11:45
Predicted by the source11:45(0′)
Bourg-la-Reine
Arrival
Scheduled time11:46
Predicted by the source11:46(0′)
Departure
Scheduled time11:47
Predicted by the source11:48(+1′)
Bagneux
Arrival
Scheduled time11:49
Predicted by the source11:49(0′)
Departure
Scheduled time11:50
Predicted by the source11:50(0′)
Arcueil - Cachan
Arrival
Scheduled time11:51
Predicted by the source11:51(0′)
Departure
Scheduled time11:51
Predicted by the source11:52(+1′)
Laplace
Arrival
Scheduled time11:53
Predicted by the source11:53(0′)
Departure
Scheduled time11:53
Predicted by the source11:54(+1′)
Gentilly
Arrival
Scheduled time11:55
Predicted by the source11:54(-1′)
Departure
Scheduled time11:55
Predicted by the source11:55(0′)
Cité Universitaire
Arrival
Scheduled time11:56
Predicted by the source11:56(0′)
Departure
Scheduled time11:57
Predicted by the source11:57(0′)
Denfert Rochereau
Arrival
Scheduled time11:59
Predicted by the source11:59(0′)
Departure
Scheduled time12:00
Predicted by the source12:00(0′)
Port Royal
Arrival
Scheduled time12:01
Predicted by the source12:01(0′)
Departure
Scheduled time12:02
Predicted by the source12:02(0′)
Luxembourg
Arrival
Scheduled time12:03
Predicted by the source12:02(-1′)
Departure
Scheduled time12:03
Predicted by the source12:03(0′)
Saint-Michel
Arrival
Scheduled time12:05
Predicted by the source12:05(0′)
Departure
Scheduled time12:06
Predicted by the source12:07(+1′)
Châtelet les Halles
Arrival
Scheduled time12:07
Predicted by the source12:08(+1′)
Departure
Scheduled time12:08
Predicted by the source12:09(+1′)
Gare du Nord
Arrival
Scheduled time12:11
Predicted by the source12:11(0′)
Departure
Scheduled time12:12
Predicted by the source12:12(0′)
Aulnay-sous-Bois
Arrival
Scheduled time12:26
Predicted by the source12:27(+1′)
Departure
Scheduled time12:27
Predicted by the source12:29(+2′)
Parc des Expositions
Arrival
Scheduled time12:32
Predicted by the source12:33(+1′)
Departure
Scheduled time12:33
Predicted by the source12:34(+1′)
Aéroport Roissy Charles de Gaulle 1
Arrival
Scheduled time12:38
Predicted by the source12:39(+1′)
Departure
Scheduled time12:39
Predicted by the source12:39(0′)
Aéroport - Charles-de-Gaulle 2 RER
Arrival
Scheduled time12:41
Predicted by the source12:40(-1′)

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+4 min

runs reported3

cancelled runs3

stops23

Delay values

DateDelay (min)

2026-09-080.45454545454545453

2026-09-090.6842105263157895

2026-09-100.4782608695652174

Typical schedule

Stops and times of RER ERIO01 from Massy - Palaiseau to Aéroport Charles de Gaulle 2 (Terminal 2) on a typical weekday. Actual times may vary.

StopArrivalDeparture

Massy - Palaiseau—11:34

Massy - Verrières-le-Buisson11:3611:36

Les Baconnets11:3811:38

Fontaine Michalon11:3911:39

Antony11:4111:42

La Croix de Berny11:4311:43

Parc de Sceaux11:4511:45

Bourg-la-Reine11:4611:47

Bagneux11:4911:50

Arcueil - Cachan11:5111:51

Laplace11:5311:53

Gentilly11:5511:55

Cité Universitaire11:5611:57

Denfert Rochereau11:5912:00

Port Royal12:0112:02

Luxembourg12:0312:03

Saint-Michel12:0512:06

Châtelet les Halles12:0712:08

Gare du Nord12:1112:12

Aulnay-sous-Bois12:2612:27

Parc des Expositions12:3212:33

Aéroport Roissy Charles de Gaulle 112:3812:39

Aéroport - Charles-de-Gaulle 2 RER12:41—

Frequently asked questions

What time does RER ERIO01 depart?

RER ERIO01 departs from Massy - Palaiseau at 11:34 (typical schedule from reported times). Actual times may vary.

How many stops does RER ERIO01 make?

RER ERIO01 connects Massy - Palaiseau to Aéroport Charles de Gaulle 2 (Terminal 2) with 23 stops.

Is RER ERIO01 on time?

Over the reported runs, every run of RER ERIO01 was cancelled (3 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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