100X Merrion Square ↔ Dundalk
Operated by Bus Éireann. First bus 03:30, last bus 23:43. 38 journeys on weekdays.
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.
| Holles Street | 05:44 | 06:44 | 07:41 | 08:40 | 09:40 | 10:40 | 11:41 | 12:41 | 13:40 | 14:40 | 15:41 | 16:39 | 17:39 | 18:40 | 19:41 | 20:43 | 21:43 | 22:44 | 23:43 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clare Street | 05:46 | 06:46 | 07:43 | 08:43 | 09:43 | 10:43 | 11:44 | 12:44 | 13:43 | 14:43 | 15:44 | 16:43 | 17:43 | 18:43 | 19:44 | 20:45 | 21:45 | 22:46 | 23:45 |
| Westland Row | 05:47 | 06:47 | 07:45 | 08:45 | 09:45 | 10:45 | 11:46 | 12:46 | 13:45 | 14:45 | 15:46 | 16:45 | 17:45 | 18:45 | 19:46 | 20:46 | 21:46 | 22:47 | 23:46 |
| Custom Hse Quay | 05:50 | 06:50 | 07:50 | 08:50 | 09:50 | 10:50 | 11:50 | 12:50 | 13:50 | 14:50 | 15:50 | 16:50 | 17:50 | 18:50 | 19:50 | 20:50 | 21:50 | 22:50 | 23:50 |
| S O'Casey Br | 05:51 | 06:51 | 07:51 | 08:51 | 09:51 | 10:51 | 11:51 | 12:51 | 13:51 | 14:51 | 15:51 | 16:51 | 17:51 | 18:51 | 19:51 | 20:51 | 21:51 | 22:51 | 23:51 |
| N Wall Quay | 05:56 | 06:56 | 07:56 | 08:57 | 09:57 | 10:57 | 11:57 | 12:57 | 13:57 | 14:57 | 15:57 | 16:57 | 17:57 | 18:57 | 19:57 | 20:56 | 21:56 | 22:56 | 23:56 |
| 3Arena | 05:58 | 06:58 | 07:59 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 20:59 | 21:59 | 22:59 | 23:59 |
| Airport Zone 13 | 06:16 | 07:16 | 08:17 | 09:20 | 10:20 | 11:20 | 12:20 | 13:20 | 14:20 | 15:20 | 16:20 | 17:20 | 18:20 | 19:20 | 20:20 | 21:20 | 22:20 | 23:19 | 00:20 |
| Cedarfield | 06:45 | 07:45 | 08:46 | 09:49 | 10:49 | 11:49 | 12:50 | 13:50 | 14:50 | 15:50 | 16:50 | 17:50 | 18:50 | 19:50 | 20:50 | 21:50 | 22:50 | 23:49 | 00:50 |
| Drogheda Bus | 06:48 | 07:48 | 08:49 | 09:55 | 10:55 | 11:55 | 12:55 | 13:55 | 14:55 | 15:55 | 16:55 | 17:55 | 18:55 | 19:55 | 20:55 | 21:55 | 22:55 | 23:54 | 00:55 |
| Cedarfield | 06:52 | 07:52 | 08:53 | 09:59 | 10:59 | 11:59 | 12:59 | 13:59 | 14:59 | 15:59 | 16:59 | · | · | · | · | · | · | · | · |
| Melifont Pk | · | · | · | · | · | · | · | · | · | · | · | 17:58 | 18:58 | 19:58 | 20:58 | 21:58 | 22:58 | · | 00:58 |
| Dunleer | · | · | · | · | · | · | · | · | · | · | · | 18:13 | 19:13 | 20:12 | 21:11 | 22:11 | 23:11 | · | 01:11 |
| Castlebellingham | · | · | · | · | · | · | · | · | · | · | · | 18:23 | 19:23 | 20:22 | 21:21 | 22:21 | 23:21 | · | 01:21 |
| Dundalk IT | 07:21 | 08:21 | 09:18 | 10:24 | 11:24 | 12:24 | 13:24 | 14:25 | 15:25 | 16:25 | 17:25 | 18:33 | 19:33 | 20:32 | 21:31 | 22:30 | 23:30 | 00:25 | 01:30 |
| Louth County Hospl | 07:24 | 08:24 | 09:19 | 10:25 | 11:25 | 12:25 | 13:25 | 14:26 | 15:26 | 16:26 | 17:26 | 18:35 | 19:35 | 20:33 | 21:32 | 22:31 | 23:31 | 00:26 | 01:31 |
| Stapleton Place | 07:28 | 08:28 | 09:22 | 10:28 | 11:28 | 12:28 | 13:28 | 14:29 | 15:29 | 16:29 | 17:29 | 18:38 | 19:38 | 20:35 | 21:34 | 22:33 | 23:33 | 00:28 | 01:33 |
| Dundalk Bus Stn | 07:33 | 08:33 | 09:27 | 10:33 | 11:33 | 12:33 | 13:33 | 14:34 | 15:34 | 16:34 | 17:34 | 18:44 | 19:44 | 20:40 | 21:40 | 22:38 | 23:38 | 00:33 | 01:38 |
Route map
All stops on route 100X
100X towards Dundalk
- Holles Street Dublin
- Clare Street Dublin
- Westland Row Dublin
- Custom Hse Quay Dublin
- S O'Casey Br Dublin
- N Wall Quay Dublin
- 3Arena Dublin
- Airport Zone 13 Swords
- Cedarfield Drogheda
- Drogheda Bus Drogheda
- Cedarfield Drogheda
- Melifont Pk Drogheda
- Dunleer
- Castlebellingham
- Dundalk IT Dundalk
- Louth County Hospl Dundalk
- Stapleton Place Dundalk
- Dundalk Bus Stn Dundalk
100X towards Merrion Square
- Dundalk Bus Stn Dundalk
- Stapleton Place Dundalk
- Louth County Hospl Dundalk
- Dundalk IT Dundalk
- Cedarfield Drogheda
- Castlebellingham
- Dunleer
- Melifont Pk Drogheda
- Drogheda Bus Drogheda
- Cedarfield Drogheda
- Terminal 2 Zone 19 Swords
- Aircraft Hangars Swords
- N Wall Quay Dublin
- Convention Centre Dublin
- S O'Casey Br Dublin
- Westland Row Church Dublin
- Merrion Sq West Dublin
- Merrion Sq South Dublin
Towns & areas on this route
Frequently asked questions
What time is the first 100X bus?
The first 100X departure on weekdays leaves at 03:30 (check the full timetable below for your stop, as times vary along the route — weekend times can differ).
What time is the last 100X bus?
The last 100X on weekdays leaves its first stop at 23:43. Always check the timetable for your specific stop — later stops are reached after this time.
How much does the 100X bus cost?
Fares on the 100X are set under the National Transport Authority's fare structure. Paying with a TFI Leap Card is significantly cheaper than cash, with daily and weekly caps on most city services.
Who runs the 100X bus?
The 100X is operated by Bus Éireann.
Timetable data from the operator via the DfT Bus Open Data Service. Check before you travel — services can change at short notice.