Cheapest return flights from Chicago to Bucharest in September from $500

AirHint found the following cheapest return flights from Chicago (ORD) to Bucharest (OTP) in September 2025 (see full year).

Return flights

13 Sep - 27 Sep Scandinavian Airlines
06 Sep - 13 Sep Scandinavian Airlines
20 Sep - 27 Sep Scandinavian Airlines
16 Sep - 30 Sep Turkish Airlines
14 Sep - 21 Sep Scandinavian Airlines
01 Sep - 08 Sep Air Serbia
02 Sep - 09 Sep Turkish Airlines
03 Sep - 10 Sep Turkish Airlines
10 Sep - 17 Sep United
04 Sep - 11 Sep United
28 Sep - 05 Oct United

Also check the deals for one-way flights from Chicago to Bucharest in September.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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