From Turkish Airlines, fly from Chicago to Bucharest for $661 round-trip, including all taxes, on Turkish Airlines.
Searching TurkishAirlines.com, we spotted seats departing ORD on November 12, returning from OTP on November 20. Itineraries include an overnight stopover in Istanbul.
Other dates are also available for travel throughout November and again from January through March.
For booking info, see our Fare Details.