LIRR 401 Jamaica – Montauk

View line LIRR

Jamaica 01:05 → Montauk 03:57 Mon, Tue, Wed, Thu, Fri 2 h 52 min · 18 stops MTA LIRR

✓ Today’s run finished

Today it reached Montauk at 04:02 +5 min

  1. Jamaica01:05
  2. Islip01:54
  3. Sayville02:11
  4. Mastic-Shirley02:32
  5. Westhampton02:54
  6. Bridgehampton03:22
  7. Montauk03:57

Next service: tomorrow 01:05 from Jamaica · Thu 22 Oct

Full trip card
Next departure 01:05 tomorrow · Jamaica
On-time · 30 days
63%
12/19 runs under 3 min
RT coverage: 19 full · 0 partial · 0 no data
On-time · 90 days
63%
12/19 runs under 3 min
RT coverage: 19 full · 0 partial · 0 no data
Typical delay
+2min
Median at arrival, 90 days
30 days: +2 min
P90
+7min
9 in 10 runs arrive with less than this
30 days: +7 min

Last 30 days

Arrival delay at Montauk, in minutes. One bar per run.

  • On time (<3 min)
  • 3–10 min
  • 10–30 min
  • 30+ min
  • Partial coverage
  • No data

Worst days

  • Sat 10 Oct Max en route +15 min · last fix heading to Oyster Bay +12 min
  • Sat 17 Oct Max en route +11 min · last fix heading to Oyster Bay +7 min
  • Thu 15 Oct Max en route +10 min · last fix heading to Patchogue +7 min
  • Fri 16 Oct Max en route +6 min · last fix heading to Patchogue +6 min
  • Wed 21 Oct Max en route +10 min · last fix heading to Montauk +5 min

Distribution · 90 days

19 runs with a known final delay. On time = under 3 min, the same cut the map uses.

  • Early 16% · 3
  • On time 47% · 9
  • 3–10 min 32% · 6
  • 10–30 min 5% · 1
  • 30+ min 0% · 0

On-time by weekday

  • 100% M n=3
  • 67% T n=3
  • 67% W n=3
  • 50% T n=2
  • 0% F n=2
  • 33% S n=3
  • 100% S n=3

Stops and timetable

Timetable of the latest run from the operator’s GTFS (18 stops).

StopSched.
Jamaica
01:05
Babylon
01:42
Bay Shore
01:48
Islip
01:54
Great River
01:58
Oakdale
02:04
Sayville
02:11
Patchogue
02:19
Bellport
02:25
Mastic-Shirley
02:32
Speonk
02:48
Westhampton
02:54
Hampton Bays
03:04
Southampton
03:14
Bridgehampton
03:22
East Hampton
03:32
Amagansett
03:37
Montauk
03:57

Each run is closed into train_runs (country, train number, service day) from the live positions. Final delay = last delay seen. Partial coverage: the feed stopped before the final stop (last value used, hatched in the chart). No data: a run without any valid delay; counts as neither on time nor late. Data collected since 10 July 2026.

Recent runs

DateLast stopFinalMax
Wed 21 OctMontauk 04:40+5 min+10 min
Tue 20 OctSpeonk 22:06+2 min+16 min
Mon 19 OctSpeonk 18:46+1 min+7 min
Sun 18 OctSpeonk 22:04−2 min+7 min
Sat 17 OctOyster Bay 01:19+7 min+11 min
Fri 16 OctPatchogue 19:12+6 min+6 min
Thu 15 OctPatchogue 19:45+7 min+10 min
Wed 14 OctPatchogue 19:38+2 min+13 min
Tue 13 OctSpeonk 22:07+3 min+7 min
Mon 12 OctSpeonk 18:44−3 min+3 min
Sun 11 OctOyster Bay 20:13−1 min+9 min
Sat 10 OctOyster Bay 01:24+12 min+15 min
Fri 9 OctPatchogue 23:39+4 min+51 min
Thu 8 OctOyster Bay 00:39−3 min+9 min
Wed 7 OctPatchogue 19:39+2 min+9 min
Tue 6 Octsepta-rail:1 00:100 min+20 min
Mon 5 OctPatchogue 23:39+2 min+6 min
Sun 4 Oct163 18:47+2 min+4 min
Sat 3 Oct198 02:00+1 min+7 min