Operated by SBST
| Direction | First bus (wkday) | Last bus | AM peak | AM off-peak | PM peak | PM off-peak |
|---|---|---|---|---|---|---|
| Bishan Int → Punggol Int | 05:45 | 23:45 | 8–12 min | 5–14 min | 5–14 min | 12–15 min |
| Punggol Int → Bishan Int | 05:30 | 23:45 | 6–12 min | 6–13 min | 9–11 min | 11–15 min |
First/last bus are at the origin stop, weekdays. Frequencies are LTA's scheduled ranges in minutes.