Bus from Dublin to Castleknock
11 direct routes · 38–90 min · first bus 06:06, last bus 23:22 (weekdays); the 39A runs 24 hours.
Next buses to Castleknock as of 04:52
Scheduled times at the boarding stop in Dublin, from the operators' timetables — they update automatically. Open the stop for live tracking.
Direct routes
| Route | Operator | Journey time | Weekday journeys | Days | First | Last | Board at | Get off at | Calls at |
|---|---|---|---|---|---|---|---|---|---|
| 39A | Bus Átha Cliath – Dublin Bus | ~51 min | 112 | Sat 91 · Sun 77 | 24 hours | Leeson Street Lwr | Morgan Place | Ashtown | |
| 37 | Bus Átha Cliath – Dublin Bus | ~58 min | 54 | Sat 42 · Sun 30 | 06:18 | 23:19 | Leeson Street Lwr | St Brigid's Church | Ashtown |
| 38 | Bus Átha Cliath – Dublin Bus | ~46 min | 39 | Sat 32 · Sun 30 | 06:16 | 23:22 | Leeson Street Lwr | Morgan Place | Ashtown |
| 39 | Bus Átha Cliath – Dublin Bus | ~48 min | 37 | Sat 34 · Sun 30 | 06:27 | 23:06 | Leeson Street Lwr | Morgan Place | Ashtown |
| 38A | Bus Átha Cliath – Dublin Bus | ~46 min | 34 | Sat 32 · Sun 30 | 08:12 | 23:06 | Leeson Street Lwr | Morgan Place | Ashtown |
| 70 | Bus Átha Cliath – Dublin Bus | ~47 min | 28 | Sat 17 · Sun 16 | 07:05 | 23:20 | Leeson Street Lwr | Morgan Place | Ashtown |
| 38B | Bus Átha Cliath – Dublin Bus | ~38 min | 5 | weekdays only | 06:06 | 07:26 | Leeson Street Lwr | Morgan Place | Ashtown |
| 70n | Nitelink, Dublin Bus | ~9 min | 3 | weekends only | 00:11 | 04:11 | Nephin Road | Morgan Place | Ashtown |
3 occasional services — once or twice a day · 39X, 38D, 70D
Often school, college or market-day journeys — check the route before relying on one.
| Route | Operator | Journey time | Weekday journeys | Days | First | Last | Board at | Get off at | Calls at |
|---|---|---|---|---|---|---|---|---|---|
| 39X | Bus Átha Cliath – Dublin Bus | ~90 min | 2 | weekdays only | 16:58 | 17:28 | Leeson Street Lwr | Morgan Place | Ashtown |
| 38D | Bus Átha Cliath – Dublin Bus | ~50 min | 1 | weekdays only | 07:46 | 07:46 | Leeson Street Lwr | Morgan Place | Ashtown |
| 70D | Bus Átha Cliath – Dublin Bus | ~15 min | 1 | weekdays only | 17:39 | 17:39 | Nephin Road | St Brigid's Church | Ashtown |
Times are for the first boarding point in Dublin on each route's weekday timetable — open the route for the full timetable, live map and every stop.
The same number runs elsewhere in the UK — see every 39A bus, 37 bus, 38 bus, 39 bus, 38A bus, 70 bus or 38B bus timetable.
Frequently asked questions
Which bus goes from Dublin to Castleknock?
11 routes run directly from Dublin to Castleknock: the 39A (Bus Átha Cliath – Dublin Bus), the 37 (Bus Átha Cliath – Dublin Bus), the 38 (Bus Átha Cliath – Dublin Bus), the 39 (Bus Átha Cliath – Dublin Bus), the 38A (Bus Átha Cliath – Dublin Bus), the 70 (Bus Átha Cliath – Dublin Bus), the 38B (Bus Átha Cliath – Dublin Bus), the 70n (Nitelink, Dublin Bus), the 39X (Bus Átha Cliath – Dublin Bus), the 38D (Bus Átha Cliath – Dublin Bus), the 70D (Bus Átha Cliath – Dublin Bus). The most frequent is the 39A, 112 times each weekday — board at Leeson Street Lwr and get off at Morgan Place, about 51 minutes.
How long does the bus take from Dublin to Castleknock?
Between 38 minutes on the 38B and 90 on the 39X, depending on which route you catch and on traffic. It calls at Ashtown on the way.
What time is the first and last bus from Dublin to Castleknock?
On weekdays the first direct bus leaves around 06:06 and the last around 23:22 — and the 39A runs 24 hours. Check the route timetables for weekends.
How much is the bus from Dublin to Castleknock?
Fares follow the National Transport Authority's fare structure — a TFI Leap Card is significantly cheaper than cash, with daily and weekly caps on most services.