This is live pricing from Travelpayouts' aggregation of 40+ booking engines. The $674 fare is the cheapest current round-trip from Chicago (ORD) to IST on Turkish flight TK6, departing 2026-10-03 at 20:10 with return on 2026-10-05.

Clicking "Book this flight" opens Kiwi.com with this exact flight pre-filtered — same airline, same dates, same passenger count.