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