RER 148820

RER

Dourdan La ForêtMusée d'Orsay

Passage confirmedPassage confirmed by the source at one or more stops. Other times are estimated.

Punctuality : 100% on time · average delay +1.3 min · over 7 observed days

Usually

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

Departs: 13:05
Arrives: 14:21
Journey time: 1 h 16
Stops: 19
Runs: Weekends

Stops on the current run

12 stops passed : 6 confirmed by the source, 6 from the forecast. Latest source data: 2 min ago.

Estimated next stop: Épinay-sur-Orge at 13:51

Estimated progress: filled dots before the next stop, a ring at the next stop, empty dots afterwards. Passages not confirmed.

Earlier stop (estimated)
Dourdan la Forêt
Arrival
Scheduled time13:05
Departure
Scheduled time13:05
Predicted by the source13:05(0′)
Passed according to the source forecast (data 10 h 47 old)
Earlier stop (estimated)
Dourdan
Arrival
Scheduled time13:07
Confirmed by the source13:07(0′)
Arrival reported by the source, no actual time
Departure
Scheduled time13:07
Predicted by the source13:07(0′)
Earlier stop (estimated)
Sermaise
Arrival
Scheduled time13:12
Predicted by the source13:12(0′)
Departure
Scheduled time13:12
Predicted by the source13:12(0′)
Passed according to the source forecast (data 36 min old)
Earlier stop (estimated)
Saint-Chéron
Arrival
Scheduled time13:17
Confirmed by the source13:17(0′)
Arrival reported by the source, no actual time
Departure
Scheduled time13:17
Predicted by the source13:17(0′)
Earlier stop (estimated)
Breuillet Village
Arrival
Scheduled time13:21
Confirmed by the source13:21(0′)
Arrival reported by the source, no actual time
Departure
Scheduled time13:22
Predicted by the source13:22(0′)
Earlier stop (estimated)
Breuillet - Bruyères-le-Châtel
Arrival
Scheduled time13:25
Predicted by the source13:25(0′)
Departure
Scheduled time13:25
Predicted by the source13:25(0′)
Passed according to the source forecast (data 24 min old)
Earlier stop (estimated)
Égly
Arrival
Scheduled time13:28
Predicted by the source13:28(0′)
Departure
Scheduled time13:29
Predicted by the source13:29(0′)
Passed according to the source forecast (data 21 min old)
Earlier stop (estimated)
Arpajon
Arrival
Scheduled time13:31
Confirmed by the source13:31(0′)
Arrival reported by the source, no actual time
Departure
Scheduled time13:32
Predicted by the source13:32(0′)
Earlier stop (estimated)
La Norville - Saint-Germain-lès-Arpajon
Arrival
Scheduled time13:35
Confirmed by the source13:35(0′)
Arrival reported by the source, no actual time
Departure
Scheduled time13:35
Predicted by the source13:35(0′)
Earlier stop (estimated)
Brétigny
Arrival
Scheduled time13:40
Predicted by the source13:40(0′)
Departure
Scheduled time13:41
Predicted by the source13:41(0′)
Passed according to the source forecast (data 12 min old)
Earlier stop (estimated)
Saint-Michel-sur-Orge
Arrival
Scheduled time13:44
Confirmed by the source13:44(0′)
Arrival reported by the source, no actual time
Departure
Scheduled time13:45
Predicted by the source13:45(0′)
Earlier stop (estimated)
Sainte-Geneviève-des-Bois
Arrival
Scheduled time13:47
Predicted by the source13:47(0′)
Departure
Scheduled time13:48
Predicted by the source13:48(0′)
Passed according to the source forecast (data 4 min old)
Next stop (estimated)
Épinay-sur-Orge
Arrival
Scheduled time13:50
Predicted by the source13:50(0′)
Departure
Scheduled time13:51
Predicted by the source13:51(0′)
Later stop (estimated)
Savigny-sur-Orge
Arrival
Scheduled time13:53
Predicted by the source13:53(0′)
Departure
Scheduled time13:54
Predicted by the source13:54(0′)
Later stop (estimated)
Juvisy
Arrival
Scheduled time13:57
Predicted by the source13:57(0′)
Departure
Scheduled time13:59
Predicted by the source13:59(0′)
Later stop (estimated)
Bibliothèque François Mitterrand
Arrival
Scheduled time14:10
Predicted by the source14:10(0′)
Departure
Scheduled time14:11
Predicted by the source14:11(0′)
Later stop (estimated)
Gare d'Austerlitz
Arrival
Scheduled time14:13
Predicted by the source14:13(0′)
Departure
Scheduled time14:14
Predicted by the source14:14(0′)
Later stop (estimated)
Saint-Michel Notre-Dame
Arrival
Scheduled time14:17
Predicted by the source14:17(0′)
Departure
Scheduled time14:18
Predicted by the source14:18(0′)
Later stop (estimated)
Musée d'Orsay
Arrival
Scheduled time14:21
Predicted by the source14:21(0′)
Departure
Scheduled time14:21
Estimated (timetable + current delay)14:21(0′)

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 time100%

average delay+1.3 min

max delay+11 min

runs reported7

stops19

Delay values

DateDelay (min)

2026-10-100.13333333333333333

2026-10-11-0.26666666666666666

2026-10-174.117647058823529

2026-10-18-0.05263157894736842

2026-10-245.055555555555555

2026-10-250.10526315789473684

2026-10-310.21052631578947367

Historical average delay — home ranking: −0.3 min (over 7 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: 7. Calculated on: 11/1/2026, 1:41:52 PM (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, 2:41:52 PM – 11/1/2026, 1:41:52 PM (Europe/Paris).

Runs in the window: 7
Events confirmed by the source: 0
Events predicted by the source: 7
Unknown event type: 0
Cancelled runs, excluded: 0
No usable delay, excluded: 0

Latest source timestamp: 10/31/2026, 2:21:57 PM (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 148820 from Dourdan La Forêt to Musée d'Orsay on a typical weekday. Actual times may vary.

StopArrivalDeparture

Dourdan la Forêt13:0513:05

Dourdan13:0713:07

Sermaise13:1213:12

Saint-Chéron13:1713:17

Breuillet Village13:2113:22

Breuillet - Bruyères-le-Châtel13:2513:25

Égly13:2813:29

Arpajon13:3113:32

La Norville - Saint-Germain-lès-Arpajon13:3513:35

Brétigny13:4013:41

Saint-Michel-sur-Orge13:4413:45

Sainte-Geneviève-des-Bois13:4713:48

Épinay-sur-Orge13:5013:51

Savigny-sur-Orge13:5313:54

Juvisy13:5713:59

Bibliothèque François Mitterrand14:1014:11

Gare d'Austerlitz14:1314:14

Saint-Michel Notre-Dame14:1714:18

Musée d'Orsay14:2114:21

Frequently asked questions

What time does RER 148820 depart?

RER 148820 departs from Dourdan la Forêt at 13:05 (typical schedule from reported times). Actual times may vary.

How many stops does RER 148820 make?

RER 148820 connects Dourdan La Forêt to Musée d'Orsay with 19 stops.

Is RER 148820 on time?

Over the reported runs, RER 148820 was reported on time 100% of runs, with an average delay of 1.3 minutes.

Other trains on this line

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

Back to the list