While purchasing the first ticket, you can mark the Return button, or after purchasing one-way, you can re-enter the system and purchase the return tickets by examining the reverse route sign with the reverse route sign.
When you search for flights between İstanbul and Sidney, all active companies and flight times on the date you entered are listed. You can find the cheapest flight tickets by sorting this list by price.
The most frequently used airline companies from İstanbul to Sidney are generally
Türk Hava Yolları,
Qatar Airways,
Sichuan Airlines,
Oman Air,
China Southern Airlines,
Qantas Airways,
Gulf Air,
KLM Royal Dutch Airlines,
Philippine Airlines,
Malindo Airways,
Cathay Pacific,
Garuda Indonesia,
Thai Airways Intl,
Etihad Airways,
Asiana Airlines,
Air France,
Singapore Airlines,
British Airways,
Korean Air,
Srilankan Airlines,
Emirates,
Lufthansa,
China Eastern Airlines
are companies.