- Oakhurst to Hornsby Inn
- Oakville to Hornsby Inn
- Oatlands to Hornsby Inn
- Oatley to Hornsby Inn
- Old Guildford to Hornsby Inn
- Old Toongabbie to Hornsby Inn
- Oran Park to Hornsby Inn
- Orchard Hills to Hornsby Inn
- Oxford Falls to Hornsby Inn
- Oxley Park to Hornsby Inn
- Oyster Bay to Hornsby Inn
- Sydney Airport to Hornsby Inn
- Hornsby Inn to Oakhurst
- Hornsby Inn to Oakville
- Hornsby Inn to Oatlands
- Hornsby Inn to Oatley
- Hornsby Inn to Old Guildford
- Hornsby Inn to Old Toongabbie
- Hornsby Inn to Oran Park
- Hornsby Inn to Orchard Hills
- Hornsby Inn to Oxford Falls
- Hornsby Inn to Oxley Park
- Hornsby Inn to Oyster Bay
- Hornsby Inn to Sydney Airport