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