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

Return flights

17 Aug - 30 Aug	Delta
05 Aug - 06 Sep	Delta
18 Aug - 25 Aug	Delta
10 Aug - 23 Aug	Delta
15 Aug - 22 Aug	Delta
04 Aug - 11 Aug	Air France
17 Aug - 24 Aug	Delta
04 Aug - 06 Sep	Delta
02 Aug - 06 Sep	Delta
01 Aug - 08 Aug	Air France
02 Aug - 09 Aug	KLM

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

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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Cheapest return flights from Chicago to Bucharest in August from 667€

Return flights