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 Singapur, 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 Singapur are generally
Türk Hava Yolları,
Sichuan Airlines,
Asiana Airlines,
Thai Airways Intl,
Srilankan Airlines,
Emirates,
Singapore Airlines,
Finnair,
Korean Air,
Gulf Air,
Saudi Arabian Airlines,
Cathay Pacific,
Air New Zealand,
IndiGo,
Etihad Airways,
Ethiopian Airlines,
Qatar Airways,
China Eastern Airlines,
Oman Air,
British Airways,
Royal Brunei
are companies.