Viewing the timetable for service 23, 21
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⚠️Gabalfa Flyover / Cross Inn Closure
Today 09:59 - 27th Oct 2026
Due to Gabalfa Flyover / Cross Inn Closure on Tuesday 27th October, from 20:00 until last bus, outbound services 21/23, 27 & 136 will divert via the roundabout instead of the flyover.
Services 21 & 27 will then divert via Merthyr Road, Manor Way, birchgrove Road and Pantbach Road (21) and Caerphilly Road (27). -
Pantmawr Road Closure
Today 11:04 - 28th Oct 2026
Due to roadworks on Pantmawr Road, on Wednesday 28th October from 20:00 until last bus, services 21 / 23 will divert.
Service 21 will divert via Heol-YDeri, Pantbach Road, Ty’n-YParc Road, Ty’n-Y-Pwll Road and then resume normal route.
Service 23 will divert via Ty’n-Y-Pwll Road, Ty’n-Y-Parc Road, Pantbach Road, Heol-Y-Deri to resume normal route.
For any passengers wanting to reach the Hollybush area, the 136 is the nearest alternative.
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Route map
| Service 21 | Service 21 | Service 23 | Service 23 | Service 21 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 21 | Service 23 | Service 23 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cardiff Bus Interchange | - | 07:00 | - | 07:24 | 07:27 | 08:10 | 08:25 | 08:45 | 08:55 | 09:15 | 09:30 | 09:45 | 10:00 | 10:15 | 10:30 | 10:45 | 11:00 | 11:15 | 11:30 | 11:45 | 12:00 | 12:15 | 12:30 | 12:45 | 13:00 | 13:15 | 13:30 | 13:45 | 14:00 | 14:15 | 14:30 | 14:45 | 15:00 | 15:15 | 15:30 | 15:50 | 16:05 | 16:20 | 16:35 | 16:50 | 17:10 | 17:25 | 17:40 | 17:55 | 18:15 | 18:40 | 19:05 | 19:35 | 20:05 | 20:35 | 21:05 | 21:35 | 22:05 | 23:05 |
| Three Elms | - | - | 07:27 | 07:41 | - | - | 08:42 | - | 09:10 | - | 09:45 | - | 10:15 | - | 10:45 | - | 11:15 | - | 11:45 | - | 12:15 | - | 12:45 | - | 13:15 | - | 13:45 | - | 14:15 | - | 14:45 | - | 15:19 | - | 15:49 | - | 16:24 | - | 16:54 | - | 17:29 | - | 17:59 | - | 18:34 | - | 19:23 | - | 20:21 | - | 21:21 | - | 22:21 | 23:21 |
| Wenallt Road | - | - | 07:41 | 07:57 | - | - | 08:58 | - | 09:25 | - | 10:00 | - | 10:30 | - | 11:00 | - | 11:30 | - | 12:00 | - | 12:30 | - | 13:00 | - | 13:30 | - | 14:00 | - | 14:30 | - | 15:04 | - | 15:36 | - | 16:06 | - | 16:41 | - | 17:11 | - | 17:46 | - | 18:16 | - | 18:51 | - | 19:38 | - | 20:35 | - | 21:35 | - | 22:35 | 23:35 |
| Porthamal Gardens | - | - | 07:56 | 08:12 | - | - | 09:08 | - | 09:37 | - | 10:12 | - | 10:42 | - | 11:12 | - | 11:42 | - | 12:12 | - | 12:42 | - | 13:12 | - | 13:42 | - | 14:12 | - | 14:42 | - | 15:13 | - | 15:47 | - | 16:17 | - | 16:52 | - | 17:22 | - | 17:57 | - | 18:27 | - | 19:02 | - | 19:47 | - | 20:42 | - | 21:42 | - | 22:42 | 23:42 |
| Birchgrove | - | - | 08:02 | 08:18 | - | - | 09:13 | - | 09:44 | - | 10:19 | - | 10:49 | - | 11:19 | - | 11:49 | - | 12:19 | - | 12:49 | - | 13:19 | - | 13:49 | - | 14:19 | - | 14:49 | - | 15:20 | - | 15:54 | - | 16:24 | - | 16:59 | - | 17:29 | - | 18:04 | - | 18:34 | - | 19:09 | - | 19:52 | - | 20:46 | - | 21:46 | - | 22:46 | 23:46 |
| Birchgrove | 06:40 | 07:13 | - | - | 07:43 | 08:28 | - | 09:00 | - | 09:30 | - | 10:00 | - | 10:30 | - | 11:00 | - | 11:30 | - | 12:00 | - | 12:30 | - | 13:00 | - | 13:30 | - | 14:00 | - | 14:34 | - | 15:04 | - | 15:34 | - | 16:09 | - | 16:39 | - | 17:09 | - | 17:44 | - | 18:14 | - | 18:58 | - | 19:52 | - | 20:50 | - | 21:50 | - | - |
| Rhiwbina Stn | 06:44 | 07:18 | - | - | 07:49 | 08:34 | - | 09:07 | - | 09:37 | - | 10:07 | - | 10:37 | - | 11:07 | - | 11:37 | - | 12:07 | - | 12:37 | - | 13:07 | - | 13:37 | - | 14:07 | - | 14:40 | - | 15:10 | - | 15:40 | - | 16:15 | - | 16:45 | - | 17:15 | - | 17:50 | - | 18:20 | - | 19:03 | - | 19:57 | - | 20:54 | - | 21:54 | - | - |
| The Deri | 06:53 | 07:26 | - | - | 08:00 | 08:45 | - | 09:17 | - | 09:47 | - | 10:17 | - | 10:47 | - | 11:17 | - | 11:47 | - | 12:17 | - | 12:47 | - | 13:17 | - | 13:47 | - | 14:17 | - | 14:49 | - | 15:21 | - | 15:51 | - | 16:26 | - | 16:56 | - | 17:26 | - | 18:01 | - | 18:31 | - | 19:12 | - | 20:05 | - | 21:00 | - | 22:00 | - | - |
| Three Elms | 07:06 | 07:44 | - | - | 08:23 | 09:04 | - | 09:32 | - | 10:02 | - | 10:32 | - | 11:02 | - | 11:32 | - | 12:02 | - | 12:32 | - | 13:02 | - | 13:32 | - | 14:02 | - | 14:32 | - | 15:05 | - | 15:36 | - | 16:06 | - | 16:41 | - | 17:11 | - | 17:41 | - | 18:16 | - | 18:46 | - | 19:25 | - | 20:18 | - | 21:13 | - | 22:13 | - | - |
| Cathays High School | 07:14 | 07:53 | 08:08 | 08:25 | 08:35 | 09:12 | 09:18 | 09:40 | 09:50 | 10:10 | 10:25 | 10:40 | 10:55 | 11:10 | 11:25 | 11:40 | 11:55 | 12:10 | 12:25 | 12:40 | 12:55 | 13:10 | 13:25 | 13:40 | 13:55 | 14:10 | 14:25 | 14:40 | 14:55 | 15:12 | 15:27 | 15:45 | 16:00 | 16:15 | 16:30 | 16:50 | 17:05 | 17:20 | 17:35 | 17:50 | 18:10 | 18:25 | 18:40 | 18:55 | 19:15 | 19:33 | 19:57 | 20:26 | 20:50 | 21:20 | 21:50 | 22:20 | 22:50 | - |
| Cardiff Bus Interchange | 07:24 | 08:03 | 08:20 | 08:40 | 08:50 | 09:27 | 09:33 | 09:55 | 10:05 | 10:25 | 10:40 | 10:55 | 11:10 | 11:25 | 11:40 | 11:55 | 12:10 | 12:25 | 12:40 | 12:55 | 13:10 | 13:25 | 13:40 | 13:55 | 14:10 | 14:25 | 14:40 | 14:55 | 15:10 | 15:27 | 15:42 | 16:00 | 16:15 | 16:30 | 16:45 | 17:05 | 17:20 | 17:35 | 17:50 | 18:05 | 18:25 | 18:40 | 18:55 | 19:10 | 19:30 | 19:48 | 20:13 | 20:36 | 21:00 | 21:30 | 22:00 | 22:30 | 23:00 | - |
Please aim to arrive at bus stops 5 minutes before the time shown. Our buses should leave main stops no later than 5 minutes past the scheduled time, and no earlier than 1 minute before. Drivers use main stops to keep running on time, but times for stops in between these are only estimates and drivers are not asked to wait at these stops. We do our best to run our buses on time, but please allow plenty of time to catch the bus and any connections, as not everything is within our control.