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Bus service

Bus 109A

Serangoon Int → Blk 913

15 stops towards Blk 913

Open bus 109A in the live app

First and last bus

From Serangoon Int towards Blk 913

First bus, Mon to Fri18:10
Last bus, Mon to Fri20:11

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 Blk 913

15 stops

  1. 1Serangoon Int66009 · S'goon Ave 2 · Mon to Fri 18:10 to 20:11
  2. 2Blk 31966361 · S'goon Ave 2 · Mon to Fri 18:13 to 20:14
  3. 3Blk 23066041 · Boundary Rd · Mon to Fri 18:16 to 20:17
  4. 4Opp Blk 25766051 · Boundary Rd · Mon to Fri 18:18 to 20:18
  5. 5Opp S'goon Sports Cplx63361 · Yio Chu Kang Link · Mon to Fri 18:20 to 20:20
  6. 6Bef St. Helier's Ave63181 · Yio Chu Kang Rd · Mon to Fri 18:22 to 20:22
  7. 7Aft S'goon Nth Ave 163191 · Yio Chu Kang Rd · Mon to Fri 18:24 to 20:24
  8. 8Affinity At Serangoon63201 · Yio Chu Kang Rd · Mon to Fri 18:26 to 20:26
  9. 9Blk 13863211 · Yio Chu Kang Rd · Mon to Fri 18:27 to 20:27
  10. 10Opp Gracehaven S Army64101 · Yio Chu Kang Rd · Mon to Fri 18:30 to 20:30
  11. 11Hougang 164491 · Hougang Ave 9 · Mon to Fri 18:33 to 20:33
  12. 12Bet Blks 930/93164481 · Hougang Ave 9 · Mon to Fri 18:34 to 20:34
  13. 13Blk 91764471 · Hougang Ave 9 · Mon to Fri 18:36 to 20:35
  14. 14Blk 91964601 · Hougang Ave 4 · Mon to Fri 18:37 to 20:36
  15. 15Blk 91364611 · Hougang Ave 4 · Mon to Fri 18:39 to 20:37

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 109A. 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 Blk 913

  1. Serangoon Int66009
    In7,925
    Out6,628
  2. Blk 31966361
    In595
    Out615
  3. Blk 23066041
    In2,979
    Out546
  4. Opp Blk 25766051
    In7,282
    Out468
  5. Opp S'goon Sports Cplx63361
    In1,224
    Out1,484
  6. Bef St. Helier's Ave63181
    In837
    Out771
  7. Aft S'goon Nth Ave 163191
    In905
    Out1,153
  8. Affinity At Serangoon63201
    In1,449
    Out676
  9. Blk 13863211
    In1,987
    Out1,619
  10. Opp Gracehaven S Army64101
    In2,873
    Out2,055
  11. Hougang 164491
    In3,747
    Out1,661
  12. Bet Blks 930/93164481
    In4,991
    Out614
  13. Blk 91764471
    In4,580
    Out961
  14. Blk 91964601
    In1,816
    Out327
  15. Blk 91364611
    In1,982
    Out794

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