LIRR 422 Jamaica – Port Jefferson

View line LIRR

Jamaica 07:53 → Port Jefferson 09:24 Mon, Tue, Wed, Thu, Fri 1 h 31 min · 10 stops MTA LIRR

Running now · updated 08:49

Between Northport and Kings Park +5 min

Estimated arrival at Port Jefferson 09:29 09:24 · 40 km/h

  1. Jamaica07:53
  2. Huntington08:32
  3. Greenlawn08:37
  4. Northport08:42
  5. Kings Park08:48
  6. Smithtown08:56
  7. Port Jefferson09:24

Today it is running worse than usual: typical arrival delay is +2 min; 54% of the last 26 runs arrived on time.

On-time · 30 days
54%
14/26 runs under 3 min
RT coverage: 25 full · 1 partial · 0 no data
On-time · 90 days
52%
34/65 runs under 3 min
RT coverage: 64 full · 1 partial · 0 no data
Typical delay
+3min
Median at arrival, 90 days
30 days: +2 min
P90
+6min
9 in 10 runs arrive with less than this
30 days: +8 min

Last 30 days

Arrival delay at Port Jefferson, 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 24 Oct Max en route +13 min · last fix heading to septa-rail:90006 +13 min
  • Sat 17 Oct Max en route +12 min · last fix heading to Oyster Bay +11 min
  • Wed 4 Nov Max en route +16 min · last fix heading to — +10 min
  • Mon 17 Aug Max en route +7 min · last fix heading to 171 +7 min
  • Tue 25 Aug Max en route +6 min · last fix heading to 171 +6 min

Distribution · 90 days

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

  • Early 6% · 4
  • On time 46% · 30
  • 3–10 min 45% · 29
  • 10–30 min 3% · 2
  • 30+ min 0% · 0

On-time by weekday

  • 50% M n=10
  • 42% T n=12
  • 58% W n=12
  • 62% T n=13
  • 54% F n=13
  • 33% S n=3
  • 50% S n=2

Stops and timetable

Timetable of the latest run from the operator’s GTFS (10 stops).

Last 90 days, 65 runs. At intermediate stops it is an estimate from the delay at origin and destination. Delays over 2 h count as “> 2 h”: our data does not measure them exactly.

StopSched.Usually 9 days in 10Today
07:53+1 min +2 minPassed
08:14≈ +1 min ≈ +3 minPassed
08:32≈ +2 min ≈ +3 minPassed
08:37≈ +2 min ≈ +3 minPassed
08:42≈ +2 min ≈ +3 minPassed
08:48≈ +2 min ≈ +4 minNext
08:56≈ +2 min ≈ +4 min
09:02≈ +2 min ≈ +5 min
09:12≈ +3 min ≈ +5 min
09:24+3 min +6 min

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.

Will I make my connection?

Pick where you get off and how many minutes you have until your next train. We work it out from what this train did over the last 90 days.

Include the time to change platforms. It is an estimate from past data, not a guarantee. Days more than 2 h late count as a missed connection.

Recent runs

DateLast stopFinalMax
Mon 9 NovKings Park 08:49Partial coverage+5 min+6 min
Sun 8 NovMontauk 10:28−2 min+6 min
Sat 7 NovMontauk 00:560 min+8 min
Fri 6 NovPort Jefferson 19:240 min+8 min
Thu 5 Nov— 14:13+2 min+6 min
Wed 4 Nov— 14:20+10 min+16 min
Tue 3 NovPort Jefferson 19:23+2 min+11 min
Mon 2 NovPort Jefferson 19:24+1 min+6 min
Fri 30 OctPort Jefferson 18:36+4 min+7 min
Thu 29 OctPort Jefferson 18:35+2 min+6 min
Wed 28 OctPort Jefferson 01:00+2 min+10 min
Tue 27 OctPort Jefferson 01:01+4 min+9 min
Mon 26 OctOyster Bay 23:55−2 min+7 min
Sat 24 Octsepta-rail:90006 12:57+13 min+13 min
Fri 23 OctOyster Bay 01:08+1 min+9 min
Thu 22 Octsepta-rail:90720 22:20+6 min+20 min
Wed 21 OctPort Jefferson 23:41−2 min+8 min
Tue 20 OctOyster Bay 23:45+3 min+7 min
Mon 19 OctOyster Bay 23:43+1 min+6 min
Sun 18 OctPatchogue 20:55+4 min+10 min
Sat 17 OctOyster Bay 15:01+11 min+12 min
Fri 16 OctMontauk 09:54+6 min+8 min
Thu 15 OctMontauk 09:50+2 min+5 min
Wed 14 OctMontauk 09:53+4 min+6 min
Tue 13 OctMontauk 09:54+5 min+5 min
Mon 12 OctMontauk 18:26−2 min+3 min
Fri 9 OctGreenport 21:02+5 min+6 min
Thu 8 OctOyster Bay 16:49+2 min+4 min
Tue 6 OctPort Jefferson 00:58−1 min+4 min
Fri 2 Oct171 13:07+1 min+2 min