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

Return flights

11 Aug - 18 Aug	Icelandair
13 Aug - 20 Aug	Icelandair
27 Aug - 16 Sep	Icelandair
28 Aug - 04 Sep	Icelandair
21 Aug - 01 Sep	Icelandair
25 Aug - 08 Sep	Icelandair
26 Aug - 15 Sep	Icelandair
08 Aug - 15 Aug	Air Canada
10 Aug - 23 Aug	SWISS
10 Aug - 23 Aug	Scandinavian Airlines	direct
07 Aug - 14 Aug	United
10 Aug - 17 Aug	Air Canada
30 Aug - 06 Sep	United
07 Aug - 17 Aug	SWISS
04 Aug - 07 Aug	Icelandair
29 Aug - 02 Sep	Frontier Airlines
11 Aug - 18 Aug	Scandinavian Airlines	direct
25 Aug - 08 Sep	Scandinavian Airlines	direct
21 Aug - 01 Sep	Scandinavian Airlines	direct

Also check the deals for one-way flights from Chicago to Copenhagen 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 Copenhagen in August from 361€

Return flights