Cheapest return flights from Washington to Copenhagen in September from $475

AirHint found the following cheapest return flights from Washington (IAD) to Copenhagen (CPH) in September 2026 (see full year).

Return flights

02 Sep - 17 Sep Icelandair
30 Sep - 07 Oct Icelandair
24 Sep - 01 Oct Icelandair
25 Sep - 02 Oct Icelandair
26 Sep - 03 Oct Icelandair
27 Sep - 04 Oct Icelandair
29 Sep - 06 Oct Icelandair
23 Sep - 30 Sep Icelandair
02 Sep - 09 Sep Icelandair
20 Sep - 27 Sep Icelandair
22 Sep - 29 Sep Icelandair
13 Sep - 20 Sep Icelandair
15 Sep - 22 Sep Icelandair
17 Sep - 24 Sep Icelandair
01 Sep - 08 Sep Icelandair
06 Sep - 13 Sep Icelandair
28 Sep - 05 Oct Scandinavian Airlines direct
30 Sep - 07 Oct Scandinavian Airlines direct
24 Sep - 01 Oct Scandinavian Airlines direct
27 Sep - 04 Oct Scandinavian Airlines direct

Also check the deals for one-way flights from Washington to Copenhagen in September.

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