172Bus 172Choa Chu Kang Int ↔ Boon Lay Int
Between Choa Chu Kang Int and Boon Lay Int. 61 stops, run by SMRT Buses. On weekdays the first bus leaves Choa Chu Kang Int at 5:30 am and the last at 11:30 pm.
BP1NS4EW273 MRT/LRT connections
Bus 172 towards Boon Lay Int31 stops
| # | Stop | Weekdays | Saturday | Sunday |
|---|---|---|---|---|
| 1 | Choa Chu Kang Int | 5:30 am – 11:30 pm | 5:30 am – 11:30 pm | 6:00 am – 11:30 pm |
| 2 | Lot 1/Choa Chu Kang Stn | 5:32 am – 11:32 pm | 5:32 am – 11:32 pm | 6:02 am – 11:32 pm |
| 3 | Opp Blk 210 | 5:35 am – 11:34 pm | 5:35 am – 11:35 pm | 6:05 am – 11:35 pm |
| 4 | Opp Blk 203 | 5:37 am – 11:36 pm | 5:37 am – 11:37 pm | 6:07 am – 11:37 pm |
| 5 | Opp Hong San Terr | 5:39 am – 11:37 pm | 5:38 am – 11:38 pm | 6:08 am – 11:38 pm |
| 6 | Opp Choa Chu Kang Mkt | 5:40 am – 11:39 pm | 5:40 am – 11:40 pm | 6:10 am – 11:40 pm |
| 7 | Opp Blk 296A | 5:42 am – 11:40 pm | 5:41 am – 11:41 pm | 6:11 am – 11:41 pm |
| 8 | Sunshine Pl | 5:44 am – 11:42 pm | 5:43 am – 11:43 pm | 6:13 am – 11:43 pm |
| 9 | Opp Blk 464 | 5:44 am – 11:42 pm | 5:43 am – 11:43 pm | 6:13 am – 11:43 pm |
| 10 | Aft Hai Inn See Tp | 5:45 am – 11:43 pm | 5:44 am – 11:44 pm | 6:14 am – 11:44 pm |
| 11 | Opp Chengtai Nursery | 5:46 am – 11:44 pm | 5:45 am – 11:45 pm | 6:15 am – 11:45 pm |
| 12 | Opp Track 14 | 5:48 am – 11:46 pm | 5:46 am – 11:46 pm | 6:17 am – 11:46 pm |
| 13 | Home Team Acad | 5:49 am – 11:47 pm | 5:47 am – 11:47 pm | 6:18 am – 11:47 pm |
| 14 | Army Logistics Base | 5:50 am – 11:48 pm | 5:48 am – 11:48 pm | 6:19 am – 11:48 pm |
| 15 | Keat Hong Camp | 5:51 am – 11:49 pm | 5:49 am – 11:49 pm | 6:20 am – 11:49 pm |
| 16 | Opp Tengah Air Base | 5:52 am – 11:49 pm | 5:50 am – 11:50 pm | 6:20 am – 11:50 pm |
| 17 | B25 Old Choa Chu Kang Rd | 5:53 am – 11:50 pm | 5:51 am – 11:51 pm | 6:21 am – 11:51 pm |
| 18 | Aft Jln Berseri | 5:55 am – 11:52 pm | 5:53 am – 11:53 pm | 6:23 am – 11:53 pm |
| 19 | Teen Challenge | 5:55 am – 11:53 pm | 5:53 am – 11:53 pm | 6:24 am – 11:53 pm |
| 20 | Bef Lim Chu Kang Rd | 5:57 am – 11:54 pm | 5:55 am – 11:55 pm | 6:25 am – 11:55 pm |
| 21 | Aft Cemy Chapel | 5:57 am – 11:54 pm | 5:55 am – 11:55 pm | 6:25 am – 11:55 pm |
| 22 | Aft Chr Cemy Path 9 | 5:58 am – 11:55 pm | 5:56 am – 11:56 pm | 6:26 am – 11:56 pm |
| 23 | Opp Civil Defence Acad | 5:59 am – 11:56 pm | 5:57 am – 11:57 pm | 6:27 am – 11:57 pm |
| 24 | Bef Nanyang Ave | 6:01 am – 11:57 pm | 5:59 am – 11:59 pm | 6:29 am – 11:59 pm |
| 25 | Opp Nanyang Ave | 6:02 am – 11:58 pm | 6:00 am – 12:00 am | 6:30 am – 12:00 am |
| 26 | Westwood Sec Sch | 6:03 am – 12:00 am | 6:01 am – 12:01 am | 6:31 am – 12:01 am |
| 27 | Blk 271 CP | 6:05 am – 12:01 am | 6:03 am – 12:03 am | 6:33 am – 12:03 am |
| 28 | Blk 263 | 6:08 am – 12:03 am | 6:05 am – 12:05 am | 6:36 am – 12:05 am |
| 29 | Opp Blk 695 | 6:10 am – 12:05 am | 6:07 am – 12:06 am | 6:37 am – 12:06 am |
| 31 | Blk 662D | 6:16 am – 12:10 am | 6:11 am – 12:10 am | 6:42 am – 12:10 am |
| 32 | Boon Lay Int | 6:20 am – 12:13 am | 6:14 am – 12:13 am | 6:46 am – 12:13 am |
Bus 172 towards Choa Chu Kang Int30 stops
| # | Stop | Weekdays | Saturday | Sunday |
|---|---|---|---|---|
| 1 | Boon Lay Int | 5:30 am – 11:30 pm | 5:30 am – 11:30 pm | 6:00 am – 11:30 pm |
| 2 | Opp Blk 662C | 5:32 am – 11:32 pm | 5:32 am – 11:32 pm | 6:02 am – 11:32 pm |
| 4 | Blk 695 | 5:36 am – 11:36 pm | 5:36 am – 11:36 pm | 6:06 am – 11:36 pm |
| 5 | Blk 680C | 5:37 am – 11:37 pm | 5:37 am – 11:37 pm | 6:07 am – 11:37 pm |
| 6 | Opp Blk 271 CP | 5:38 am – 11:38 pm | 5:38 am – 11:38 pm | 6:08 am – 11:38 pm |
| 7 | Opp Westwood Sec Sch | 5:39 am – 11:40 pm | 5:39 am – 11:39 pm | 6:09 am – 11:39 pm |
| 8 | Bef Nanyang Ave | 5:41 am – 11:42 pm | 5:41 am – 11:41 pm | 6:11 am – 11:41 pm |
| 9 | Aft Nanyang Ave | 5:42 am – 11:43 pm | 5:42 am – 11:41 pm | 6:12 am – 11:41 pm |
| 10 | Civil Defence Acad | 5:45 am – 11:46 pm | 5:45 am – 11:44 pm | 6:15 am – 11:44 pm |
| 11 | Bef Muslim Cemy Path 7 | 5:45 am – 11:46 pm | 5:45 am – 11:44 pm | 6:15 am – 11:44 pm |
| 12 | Pusara Aman Mque | 5:46 am – 11:47 pm | 5:46 am – 11:45 pm | 6:16 am – 11:45 pm |
| 13 | Aft Lim Chu Kang Rd | 5:47 am – 11:47 pm | 5:46 am – 11:45 pm | 6:16 am – 11:45 pm |
| 14 | Opp Teen Challenge | 5:49 am – 11:49 pm | 5:48 am – 11:47 pm | 6:18 am – 11:47 pm |
| 15 | Opp Jln Berseri | 5:49 am – 11:49 pm | 5:48 am – 11:47 pm | 6:18 am – 11:47 pm |
| 16 | B26 Old Choa Chu Kang Rd | 5:51 am – 11:51 pm | 5:50 am – 11:48 pm | 6:20 am – 11:48 pm |
| 17 | Tengah Air Base | 5:52 am – 11:52 pm | 5:51 am – 11:49 pm | 6:21 am – 11:49 pm |
| 18 | Opp Keat Hong Camp | 5:53 am – 11:53 pm | 5:52 am – 11:50 pm | 6:22 am – 11:50 pm |
| 19 | Opp Army Logistics Base | 5:54 am – 11:54 pm | 5:53 am – 11:51 pm | 6:23 am – 11:51 pm |
| 20 | Opp Home Team Acad | 5:54 am – 11:54 pm | 5:53 am – 11:51 pm | 6:23 am – 11:51 pm |
| 21 | Aft Track 14 | 5:55 am – 11:55 pm | 5:54 am – 11:52 pm | 6:24 am – 11:52 pm |
| 22 | Chengtai Nursery | 5:57 am – 11:57 pm | 5:56 am – 11:54 pm | 6:26 am – 11:54 pm |
| 23 | Opp Hai Inn See Tp | 5:58 am – 11:59 pm | 5:58 am – 11:55 pm | 6:28 am – 11:56 pm |
| 24 | Blk 464 | 5:59 am – 12:00 am | 5:59 am – 11:56 pm | 6:29 am – 11:57 pm |
| 25 | Blk 293 | 6:00 am – 12:01 am | 6:00 am – 11:57 pm | 6:30 am – 11:58 pm |
| 26 | Blk 296A | 6:01 am – 12:02 am | 6:01 am – 11:58 pm | 6:31 am – 11:59 pm |
| 27 | Choa Chu Kang Mkt | 6:03 am – 12:04 am | 6:03 am – 12:00 am | 6:33 am – 12:01 am |
| 28 | Aft Hong San Terr | 6:04 am – 12:05 am | 6:04 am – 12:01 am | 6:34 am – 12:02 am |
| 29 | Blk 204 | 6:07 am – 12:08 am | 6:07 am – 12:04 am | 6:37 am – 12:05 am |
| 30 | Aft Blk 202 | 6:09 am – 12:10 am | 6:08 am – 12:05 am | 6:38 am – 12:06 am |
| 31 | Choa Chu Kang Int | 6:14 am – 12:15 am | 6:13 am – 12:10 am | 6:43 am – 12:11 am |
First and last bus are LTA's scheduled times at each stop, so they get later along the route. Sunday times also apply on public holidays. Live arrival times are on each stop's page. Data updated 2026-09-13.