- From
- The Ground Transportation Centre bus terminus
- To
- Hung Hom station, after Mong Kok, Yau Ma Tei and Tsim Sha Tsui on Nathan Road
- Runs
- 05:30–23:40
- Journey
- 84 min
Allow about 84 minutes to Hung Hom; Tsim Sha Tsui comes earlier, but no time to it is published.
Bus A21 to Hung Hom, along Nathan Road: price for every party size
See Citybus routes