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

Return flights

12 Aug - 19 Aug	SWISS
17 Aug - 02 Sep	Icelandair
10 Aug - 21 Aug	Icelandair
05 Aug - 14 Aug	Icelandair
04 Aug - 14 Aug	Icelandair
25 Aug - 30 Aug	Icelandair
10 Aug - 26 Aug	Icelandair
16 Aug - 24 Aug	Icelandair
16 Aug - 23 Aug	Icelandair
07 Aug - 23 Aug	Icelandair
02 Aug - 02 Sep	Icelandair
25 Aug - 15 Sep	TAP
15 Aug - 24 Aug	Scandinavian Airlines
24 Aug - 15 Sep	SWISS
26 Aug - 15 Sep	Austrian Airlines
27 Aug - 01 Sep	SWISS

Also check the deals for one-way flights from Chicago to Berlin 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 Berlin in August from 272€

Return flights