RER ERIO91

RER
Châtelet les HallesAéroport - Charles-de-Gaulle 2 RER

Next scheduled journey — timetable: 2026-11-02

Punctuality : 81% on time · average delay +1.9 min · over 16 observed days

Usually

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

Departs
15:19 · Massy - Palaiseau
Arrives
16:28 · Aéroport CDG (Terminal 2) - TGV
Journey time
1 h 09
Stops
22
Runs
Every day

Next scheduled journey — timetable

  1. Massy - PalaiseauScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  2. Massy - VerrièresScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  3. Les BaconnetsScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  4. Fontaine MichalonScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  5. AntonyScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  6. La Croix de BernyScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  7. Parc de SceauxScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  8. Bourg-la-ReineScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  9. BagneuxScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  10. Arcueil - CachanScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  11. LaplaceScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  12. GentillyScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  13. Cité UniversitaireScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  14. Denfert-RochereauScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  15. Port RoyalScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  16. LuxembourgScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  17. Saint-Michel Notre-DameScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  18. Châtelet - Les HallesScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  19. Gare du NordScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  20. Aulnay-sous-BoisScheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  21. Aéroport CDG 1 (Terminal 3)Scheduled, not tracked
    Arrival
    Scheduled time
    Departure
    Scheduled time
  22. Aéroport CDG (Terminal 2) - TGVScheduled, 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 time81%
average delay+1.9 min
max delay+19 min
runs reported16
stops22
0m5m10m5/1012/1025/10
Delay values
DateDelay (min)
2026-10-051.3181818181818181
2026-10-060.5909090909090909
2026-10-073.5454545454545454
2026-10-081
2026-10-091.5
2026-10-101.6818181818181819
2026-10-111.3636363636363635
2026-10-122.3636363636363638
2026-10-130.2727272727272727
2026-10-140.7272727272727273
2026-10-150.09090909090909091
2026-10-169.785714285714286
2026-10-172.130434782608696
2026-10-181.5217391304347827
2026-10-241.1304347826086956
2026-10-251
Historical average delay — home ranking: +1.6 min (over 18 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: 18. 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, 5:16:44 PM – 11/1/2026, 4:16:44 PM (Europe/Paris).

Runs in the window
18
Events confirmed by the source
0
Events predicted by the source
18
Unknown event type
0
Cancelled runs, excluded
0
No usable delay, excluded
0

Latest source timestamp: 10/30/2026, 4:10:36 AM (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 ERIO91 from Châtelet les Halles to Aéroport - Charles-de-Gaulle 2 RER on a typical weekday. Actual times may vary.

StopArrivalDeparture
Massy - Palaiseau15:1915:19
Massy - Verrières15:2115:21
Les Baconnets15:2315:23
Fontaine Michalon15:2415:24
Antony15:2615:27
La Croix de Berny15:2815:28
Parc de Sceaux15:3015:30
Bourg-la-Reine15:3115:32
Bagneux15:3415:35
Arcueil - Cachan15:3615:36
Laplace15:3815:38
Gentilly15:4015:40
Cité Universitaire15:4115:42
Denfert-Rochereau15:4415:45
Port Royal15:4615:47
Luxembourg15:4815:48
Saint-Michel Notre-Dame15:5015:51
Châtelet - Les Halles15:5215:53
Gare du Nord15:5615:57
Aulnay-sous-Bois16:1116:12
Aéroport CDG 1 (Terminal 3)16:2516:26
Aéroport CDG (Terminal 2) - TGV16:2816:28

Frequently asked questions

What time does RER ERIO91 depart?

RER ERIO91 departs from Massy - Palaiseau at 15:19 (typical schedule from reported times). Actual times may vary.

How many stops does RER ERIO91 make?

RER ERIO91 connects Châtelet les Halles to Aéroport - Charles-de-Gaulle 2 RER with 22 stops.

Is RER ERIO91 on time?

Over the reported runs, RER ERIO91 was reported on time 81% of runs, with an average delay of 1.9 minutes.

Other trains on this line

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

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