On the 25th of June 2023, Phase 5a introduced two new W Orbital routes:
| W4 | The Square, Tallaght – Grange Castle Business Park – Liffey Valley Shopping Centre – Blanchardstown Shopping Centre |
| W6 | Hazelhatch Station – Celbridge Main Street – Maynooth Community College – Saggart – Greenogue Industrial Estate – Citywest Road – The Square, Tallaght |
| Day | Time Range | Frequency |
| Weekdays | All day | Every 30 minutes |
| Weekends | All day | Every 30–60 minutes |
Orbitals connect suburbs without needing to travel into the city centre.
They literally “orbit” the city, offering more direct suburban links.
