Bus from Blanchardstown to Castleknock
9 direct routes · 7–27 min · first bus 05:35, last bus 23:49 (weekdays); the 39A runs 24 hours.
Next buses to Castleknock as of 11:35
Scheduled times at the boarding stop in Blanchardstown, 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 | ~10 min | 117 | Sat 93 · Sun 77 | 24 hours | Blanchardstown SC | Morgan Place | — | |
| 37 | Bus Átha Cliath – Dublin Bus | ~27 min | 59 | Sat 43 · Sun 30 | 05:35 | 23:30 | Blanchardstown SC | Castleknock | Clonsilla |
| 39 | Bus Átha Cliath – Dublin Bus | ~21 min | 42 | Sat 36 · Sun 32 | 06:02 | 23:49 | Blanchardstown SC | Morgan Place | — |
| 38 | Bus Átha Cliath – Dublin Bus | ~18 min | 37 | Sat 35 · Sun 31 | 06:32 | 23:29 | Waterville Row | Morgan Place | — |
| 38A | Bus Átha Cliath – Dublin Bus | ~14 min | 31 | Sat 34 · Sun 30 | 09:11 | 23:41 | Corduff Park | Morgan Place | — |
| 38B | Bus Átha Cliath – Dublin Bus | ~7 min | 8 | weekdays only | 06:17 | 09:01 | Waterville Row | Morgan Place | — |
| 870 | Express Bus | ~7 min | 5 | weekdays only | 15:10 | 18:20 | Blanchardstown N3 | Morgan Place | — |
2 occasional services — once or twice a day · 39X, 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 | ~8 min | 2 | weekdays only | 07:19 | 07:44 | Whitestown Grove | Morgan Place | — |
| 70D | Bus Átha Cliath – Dublin Bus | ~13 min | 1 | weekdays only | 07:32 | 07:32 | Westend Office Park | Castleknock | — |
Times are for the first boarding point in Blanchardstown 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, 39 bus, 38 bus, 38A bus, 38B bus or 870 bus timetable.
Frequently asked questions
Which bus goes from Blanchardstown to Castleknock?
9 routes run directly from Blanchardstown to Castleknock: the 39A (Bus Átha Cliath – Dublin Bus), the 37 (Bus Átha Cliath – Dublin Bus), the 39 (Bus Átha Cliath – Dublin Bus), the 38 (Bus Átha Cliath – Dublin Bus), the 38A (Bus Átha Cliath – Dublin Bus), the 38B (Bus Átha Cliath – Dublin Bus), the 870 (Express Bus), the 39X (Bus Átha Cliath – Dublin Bus), the 70D (Bus Átha Cliath – Dublin Bus). The most frequent is the 39A, 117 times each weekday — board at Blanchardstown SC and get off at Morgan Place, about 10 minutes.
How long does the bus take from Blanchardstown to Castleknock?
Between 7 minutes on the 38B and 27 on the 37, depending on which route you catch and on traffic.
What time is the first and last bus from Blanchardstown to Castleknock?
On weekdays the first direct bus leaves around 05:35 and the last around 23:49 — and the 39A runs 24 hours. Check the route timetables for weekends.
How much is the bus from Blanchardstown 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.