- Oak Park to Melbourne Metropole Central
- Oaklands Junction to Melbourne Metropole Central
- Oakleigh East to Melbourne Metropole Central
- Oakleigh South to Melbourne Metropole Central
- Oakleigh to Melbourne Metropole Central
- Ocean Grove to Melbourne Metropole Central
- Officer to Melbourne Metropole Central
- Olinda to Melbourne Metropole Central
- Ormond to Melbourne Metropole Central
- Melbourne Airport to Melbourne Metropole Central
- Melbourne Metropole Central to Oak Park
- Melbourne Metropole Central to Oaklands Junction
- Melbourne Metropole Central to Oakleigh East
- Melbourne Metropole Central to Oakleigh South
- Melbourne Metropole Central to Oakleigh
- Melbourne Metropole Central to Ocean Grove
- Melbourne Metropole Central to Officer
- Melbourne Metropole Central to Olinda
- Melbourne Metropole Central to Ormond
- Melbourne Metropole Central to Melbourne Airport