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

Return flights

16 Aug - 23 Aug	Icelandair
25 Aug - 01 Sep	Icelandair
16 Aug - 21 Aug	Icelandair
24 Aug - 02 Sep	Icelandair
06 Aug - 13 Aug	Icelandair
29 Aug - 02 Sep	Icelandair
28 Aug - 02 Sep	Icelandair
28 Aug - 07 Sep	Icelandair
29 Aug - 07 Sep	Icelandair
28 Aug - 11 Sep	Icelandair
07 Aug - 14 Aug	Icelandair
03 Aug - 19 Aug	Icelandair
12 Aug - 19 Aug	Icelandair
16 Aug - 21 Aug	Scandinavian Airlines	direct
21 Aug - 28 Aug	Icelandair
30 Aug - 06 Sep	Icelandair
27 Aug - 03 Sep	Delta
03 Aug - 10 Aug	Icelandair
04 Aug - 11 Aug	Icelandair
24 Aug - 02 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 $484

Return flights