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