21 Cardiff Bus Station
Operated by Cardiff Bus. First bus 06:40, last bus 21:38. 43 journeys on weekdays.
💷 The England fare cap doesn't apply in Wales — Cardiff Bus sets the fares on the 21. Check their website or the Traveline Cymru fare finder for current prices. Who travels free →
Timetable
Times are shown at the route's main timing stops — buses serve all stops in between. For times at your exact stop, open the stop's own page.
towards Cardiff Bus Station · Monday to Friday towards Cardiff Bus Station · Saturday towards Cardiff Bus Station · Sunday
| Cardiff Bus Interchange Bay 4 | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Birchgrove 1 (o/s Principality) | 06:40 | 07:13 | 07:13 | 07:43 | 07:43 | 08:28 | 08:47 | 09:00 | 09:30 | 09:52 | 10:00 | 10:30 | 10:52 | 11:00 | 11:30 | 11:52 | 12:00 | 12:30 | 12:52 | 13:00 | 13:30 | 13:52 | 14:00 | 14:34 | 14:52 | 15:04 | 15:34 | 15:54 | 16:09 | 16:39 | 16:54 | 17:09 | 17:44 | 17:54 | 18:14 | 18:52 | 18:58 | 19:52 | 19:52 | 20:50 | 20:50 | 21:50 | 21:50 |
| Rhiwbina Station (before) | 06:44 | 07:18 | 07:18 | 07:49 | 07:48 | 08:34 | 08:52 | 09:07 | 09:37 | 09:57 | 10:07 | 10:37 | 10:57 | 11:07 | 11:37 | 11:57 | 12:07 | 12:37 | 12:57 | 13:07 | 13:37 | 13:57 | 14:07 | 14:40 | 14:57 | 15:10 | 15:40 | 15:59 | 16:15 | 16:45 | 16:59 | 17:15 | 17:50 | 17:59 | 18:20 | 18:57 | 19:03 | 19:57 | 19:57 | 20:54 | 20:54 | 21:54 | 21:54 |
| Three Elms (opp) | 07:06 | 07:44 | 07:37 | 08:23 | 08:07 | 09:04 | 09:13 | 09:32 | 10:02 | 10:18 | 10:32 | 11:02 | 11:18 | 11:32 | 12:02 | 12:18 | 12:32 | 13:02 | 13:18 | 13:32 | 14:02 | 14:18 | 14:32 | 15:05 | 15:18 | 15:36 | 16:06 | 16:20 | 16:41 | 17:11 | 17:20 | 17:41 | 18:16 | 18:20 | 18:46 | 19:16 | 19:25 | 20:18 | 20:16 | 21:13 | 21:13 | 22:13 | 22:13 |
| Cathays High School (o/s) | 07:14 | 07:53 | 07:44 | 08:35 | 08:14 | 09:12 | 09:21 | 09:40 | 10:10 | 10:26 | 10:40 | 11:10 | 11:26 | 11:40 | 12:10 | 12:26 | 12:40 | 13:10 | 13:26 | 13:40 | 14:10 | 14:26 | 14:40 | 15:12 | 15:26 | 15:45 | 16:15 | 16:27 | 16:50 | 17:20 | 17:27 | 17:50 | 18:25 | 18:27 | 18:55 | 19:23 | 19:33 | 20:26 | 20:23 | 21:20 | 21:20 | 22:20 | 22:20 |
| Greyfriars Road GL (o/s) | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | · | 21:30 | · | 21:38 |
| Cardiff Bus Interchange Bay 4 | 07:24 | 07:00 | 07:55 | 07:27 | 08:25 | 08:10 | 08:32 | 08:45 | 09:15 | 09:37 | 09:45 | 10:15 | 10:37 | 10:45 | 11:15 | 11:37 | 11:45 | 12:15 | 12:37 | 12:45 | 13:15 | 13:37 | 13:45 | 14:15 | 14:37 | 14:45 | 15:15 | 15:37 | 15:50 | 16:20 | 16:37 | 16:50 | 17:25 | 17:37 | 17:55 | 18:37 | 18:40 | 19:35 | 19:37 | 20:35 | 20:35 | 21:35 | · |
Route map
All stops on route 21
21 towards Cardiff Bus Station
- Cardiff Bus Interchange Bay 4 Cardiff Bus Station
- Westgate Street KN (o/s) Cardiff
- Kingsway GA (o/s) Cardiff Castle
- Corbett Road (before) Cathays Park
- Blackweir (o/s) Blackweir
- Maindy Stadium (opp) Maindy
- Parkfield Place (after) Maindy
- North Road Clinic (o/s) Gabalfa
- Cross Inn (before) Birchgrove
- Birchgrove 1 (o/s Principality) Birchgrove
- Pantbach Avenue (after) Birchgrove
- Welwyn Road (before) Birchgrove
- Kyle Avenue (before) Birchgrove
- Rhiwbina Station (before) Rhiwbina
- Rhiwbina Shopping Centre (o/s) Rhiwbina
- Lon-y-Rhyd (after) Rhiwbina
- Heol y Deri (after) Rhiwbina
- Heol Nant Castan (before) Rhiwbina
- Heol Llanishen Fach (o/s 65) Rhiwbina
- Heol Uchaf Spar (before) Rhiwbina
- Heol Lewis (after) Rhiwbina
- Gron Ffordd (before) Rhiwbina
- Wenallt Road (before) Rhiwbina
- Lon Ysgubor (after) Rhiwbina
- The Deri (before) Rhiwbina
- Rhiwbina Hill (opp 52) Rhiwbina
- Caer Wenallt North (before) Pantmawr
- Caer Wenallt South (after) Pantmawr
- Heol Pant Y Rhyn (before) Coryton
- Hollybush Inn (before) Coryton
- Whitchurch Hospital (after) Whitchurch
- Whitchurch Library (opp) Whitchurch
- Plas y Llan (after) Whitchurch
- Merthyr Road Shops (o/s Opticians) Whitchurch
- Three Elms (opp) Whitchurch
- Ararat Church (after) Whitchurch
- The Philog (o/s 71) Whitchurch
- Cross Inn (before) Birchgrove
- St Josephs Convent (o/s former) Gabalfa
- Cathays High School (o/s) Maindy
- Blackweir (opp) Blackweir
- Rosemount (after) Blackweir
- College Road RK (o/s) Cathays Park
- Law Courts RJ (o/s) Cathays Park
- Greyfriars Road GL (o/s) Cardiff
- Kingsway GR (o/s) Cardiff Castle
- Westgate Street KG (o/s) Cardiff
- Cardiff Bus Interchange Bay 4 Cardiff Bus Station
Towns & areas on this route
CardiffWhitchurchRhiwbinaGabalfaBirchgroveCathays ParkCorytonCardiff Bus StationPantmawrMaindyCardiff CastleBlackweir
Frequently asked questions
What time is the first 21 bus?
The first 21 departure on weekdays leaves at 06:40 (check the full timetable below for your stop, as times vary along the route — weekend times can differ).
What time is the last 21 bus?
The last 21 on weekdays leaves its first stop at 21:38. Always check the timetable for your specific stop — later stops are reached after this time.
How much does the 21 bus cost?
The England fare cap doesn't apply in Wales — Cardiff Bus sets the fares on the 21. Check their website or the Traveline Cymru fare finder for current prices.
Who runs the 21 bus?
The 21 is operated by Cardiff Bus.
Timetable data from the operator via the DfT Bus Open Data Service. Check before you travel — services can change at short notice.