Cheapest return flights from Chicago to Sofia in August from $581

Best time to book flights for Chicago (ORD) to Sofia (SOF) flights at AirHint

AirHint found the following cheapest return flights from Chicago (ORD) to Sofia (SOF) in August 2025 (see full year).

Return flights

11 Aug - 25 Aug Air Canada
12 Aug - 19 Aug SWISS
17 Aug - 17 Sep SWISS
18 Aug - 25 Aug United
12 Aug - 15 Sep SWISS
31 Aug - 19 Sep Turkish Airlines
17 Aug - 29 Sep SWISS
17 Aug - 14 Sep ITA Airways
08 Aug - 22 Aug SWISS
14 Aug - 15 Sep SWISS
05 Aug - 28 Aug Air Canada
09 Aug - 20 Sep Icelandair
21 Aug - 31 Aug SWISS
01 Aug - 30 Aug SWISS
23 Aug - 30 Aug United
28 Aug - 04 Sep United
05 Aug - 12 Aug United
01 Aug - 17 Aug SWISS

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

Skyscanner

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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