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Bus service

Bus 100A

Serangoon Int → Aljunied Stn

13 stops towards Aljunied Stn

Open bus 100A in the live app

First and last bus

From Serangoon Int towards Aljunied Stn

First bus, Mon to Fri06:30
Last bus, Mon to Fri19:42

Times at the first stop of each direction. Later stops are a few minutes behind. Source: LTA DataMall BusRoutes (live pull 2026-10-06). Saturday and Sunday first-bus times are not in the data we hold.

Route and stops

Direction 1: Serangoon Int to Aljunied Stn

13 stops

  1. 1Serangoon Int66009 · S'goon Ave 2 · Mon to Fri 06:30 to 19:42
  2. 2Blk 40362129 · Upp S'goon Rd · Mon to Fri 06:33 to 19:46
  3. 3Aft Sunshine Lodge62119 · Upp S'goon Rd · Mon to Fri 06:35 to 19:48
  4. 4Aft Bartley Rd61049 · Upp S'goon Rd · Mon to Fri 06:37 to 19:50
  5. 5Woodleigh Stn Exit A61039 · Upp S'goon Rd · Mon to Fri 06:39 to 19:52
  6. 6Aft Bidadari Pk Dr70069 · Upp Aljunied Rd · Mon to Fri 06:41 to 19:53
  7. 7Blk 770059 · Upp Aljunied Rd · Mon to Fri 06:43 to 19:56
  8. 8Aft Blk 470049 · Upp Aljunied Rd · Mon to Fri 06:44 to 19:57
  9. 9Aljunied Pk70039 · Aljunied Rd · Mon to Fri 06:46 to 19:58
  10. 10Canossa Catholic Pr70029 · Aljunied Rd · Mon to Fri 06:47 to 19:59
  11. 11Blk 12570019 · Aljunied Rd · Mon to Fri 06:49 to 20:01
  12. 12Blk 10281099 · Aljunied Rd · Mon to Fri 06:50 to 20:02
  13. 13Aljunied Stn81089 · Aljunied Rd · Mon to Fri 06:52 to 20:04

Stop activity along the route

Stop activity, all buses. LTA counts people tapping in and out at each bus stop across every service that calls there, not just bus 100A. Counts are monthly totals for September 2026.

Showing 08:00 to 08:59, weekdays. Bars are relative to the busiest stop on this route at that hour. In = tap-ins, Out = tap-outs.

Direction 1: Serangoon Int to Aljunied Stn

  1. Serangoon Int66009
    In7,925
    Out6,628
  2. Blk 40362129
    In1,392
    Out891
  3. Aft Sunshine Lodge62119
    In1,199
    Out532
  4. Aft Bartley Rd61049
    In2,057
    Out887
  5. Woodleigh Stn Exit A61039
    In10,680
    Out6,297
  6. Aft Bidadari Pk Dr70069
    In1,785
    Out699
  7. Blk 770059
    In3,275
    Out2,719
  8. Aft Blk 470049
    In2,297
    Out713
  9. Aljunied Pk70039
    In2,024
    Out8,966
  10. Canossa Catholic Pr70029
    In214
    Out1,215
  11. Blk 12570019
    In2,962
    Out3,714
  12. Blk 10281099
    In4,751
    Out1,290
  13. Aljunied Stn81089
    In3,296
    Out15,222

Source: LTA DataMall, passenger volume by bus stop, September 2026.