Go-Ahead Bus Service 661 (since 22 Sep 2015)
| Year | AM Peak | PM Peak |
| 2015 | Pasir Ris Dr 3, Pasir Ris Dr 6, Pasir Ris St 11, Pasir Ris Dr 1, Loyang Ave, TPE, PIE, KPE, MCE, Keppel Rd, Anson Rd, Robinson Rd, Finlayson Green and Marina Blvd. | Central Blvd, Shenton Way, MCE, KPE, PIE, TPE, Loyang Ave, Pasir Ris Dr 1, Pasir Ris St 11, Pasir Ris Dr 6 and Pasir Ris Dr 3. |
Tower Transit Bus Service 663 (since 28 Sep 2015)
| Year | AM Peak | PM Peak |
| 2015 | Yishun Ave 6, Yishun St 31, Yishun Ring Rd, Yishun Ave 11, Yishun Ctrl, Yishun Ave 2, Lentor Ave, SLE, CTE, Buyong Rd, Orchard Rd, Bras Basah Rd, Nicoll Highway, Esplanade Dr, Fullerton Rd, Collyer Quay, Raffles Quay and Shenton Way. | Anson Rd, Robinson Rd, Collyer Quay, Fullerton Rd, Esplanade Dr, Stamford Rd, Orchard Rd, Penang Rd, Buyong Rd, CTE, SLE, Lentor Ave, Yishun Ave 2, Yishun Ctrl, Yishun Ave 11, Yishun Ring Rd, Yishun St 31 and Yishun Ave 6. |
SMRT Bus Service 665 (since 12 Oct 2015)
| Year | AM Peak | PM Peak |
| 2015 | Marsiling Dr, Marsiling Lane, Marsiling Rd, Marsiling Rise, Woodlands Ave 5, Woodlands Ave 4, Woodlands Ave 1, Woodlands Ave 12, SLE, CTE, Buyong Rd, Orchard Rd, Bras Basah Rd, Nicoll Highway, Esplanade Dr, Fullerton Rd, Collyer Quay, Raffles Quay and Shenton Way. | Anson Rd, Robinson Rd, Collyer Quay, Fullerton Rd, Esplanade Dr, Stamford Rd, Orchard Rd, Penang Rd, Buyong Rd, CTE, SLE, Woodlands Ave 12, Woodlands Ave 1, Woodlands Ave 4, Woodlands Ave 5, Marsiling Rise, Marsiling Rd, Marsiling Lane and Marsiling Dr. |
Go-Ahead Bus Service 666 (since 29 Feb 2016)
| Year | AM Peak | PM Peak |
| 2024 | Punggol Dr, Punggol East, Punggol Field, Punggol Way, TPE, CTE, Chin Swee Rd, Outram Rd, Cantonment Rd, Keppel Rd, Anson Rd, Robinson Rd, Finlayson Green, Marina Blvd, Bayfront Ave, Temasek Ave, Temasek Blvd and Raffles Blvd. | Temasek Blvd, Temasek Ave, Bayfront Ave, Central Blvd, Shenton Way, Keppel Rd, Cantonment Link, Cantonment Rd, Outram Rd, Chin Swee Rd, CTE, TPE, Punggol Way, Punggol Field, Punggol East and Punggol Dr. |
| 2016 | Punggol Dr, Punggol East, Punggol Field, Punggol Way, TPE, CTE, Chin Swee Rd, Outram Rd, Cantonment Rd, Keppel Rd, Anson Rd, Robinson Rd, Finlayson Green and Marina Blvd. | Central Blvd, Shenton Way, Keppel Rd, Cantonment Link, Cantonment Rd, Outram Rd, Chin Swee Rd, CTE, TPE, Punggol Way, Punggol Field, Punggol East and Punggol Dr. |
SBS Transit Bus Service 667 (since 8 Mar 2016)
| Year | AM Peak | PM Peak |
| 2016 | Clementi Ave 4, Clementi Ave 5, Clementi Ave 2, Commonwealth Ave West, Dover Ave, Dover Rd, Buona Vista Flyover, AYE, Keppel Rd, Anson Rd, Robinson Rd, Finlayson Green and Marina Blvd. | Central Blvd, Shenton Way, Keppel Rd, AYE, Buona Vista Flyover, Dover Rd, Dover Ave, Commonwealth Ave West, Clementi Ave 2, Clementi Ave 5 and Clementi Ave 4. |
SBS Transit Bus Service 668 (since 15 Mar 2016)
| Year | AM Peak | PM Peak |
| 2016 | Ang Mo Kio Ave 5, Ang Mo Kio Ave 4, Yio Chu Kang Rd, Ang Mo Kio Ave 6, Ang Mo Kio Ave 5, Ang Mo Kio St 53, Ang Mo Kio St 52, Ang Mo Kio Ave 10, Ang Mo Kio Ave 3, CTE, Outram Rd, Cantonment Rd, Keppel Rd, Anson Rd, Robinson Rd, Finlayson Green and Marina Blvd. | Central Blvd, Shenton Way, Keppel Rd, Cantonment Lk, Cantonment Rd, Outram Rd, CTE, Ang Mo Kio Ave 3, Ang Mo Kio Ave 10, Ang Mo Kio St 52, Ang Mo Kio St 53, Ang Mo Kio Ave 5, Ang Mo Kio Ave 6, Yio Chu Kang Rd, Ang Mo Kio Ave 4 and Ang Mo Kio Ave 5. |
Tower Transit Bus Service 670 (since 29 Mar 2016)
| Year | AM Peak | PM Peak |
| 2016 | Yishun Ave 7, Yishun Ave 6, Yishun Ave 9, Yishun Ring Rd, Yishun Ave 2, Lentor Ave, SLE, CTE, Outram Rd, Cantonment Rd, Keppel Rd, Anson Rd, Robinson Rd, Finlayson Green and Marina Blvd. | Central Blvd, Shenton Way, Keppel Rd, Cantonment Lk, Cantonment Rd, Outram Rd, CTE, SLE, Lentor Ave, Yishun Ave 2, Yishun Ring Rd, Yishun Ave 9, Yishun Ave 6 and Yishun Ave 7. |