AirHint found the following cheapest return flights from Newark (EWR) to Copenhagen (CPH) in September 2025 (see full year).

Return flights

23 Sep - 30 Sep	Icelandair
24 Sep - 30 Sep	Icelandair
29 Sep - 06 Oct	Scandinavian Airlines	direct
29 Sep - 06 Oct	Scandinavian Airlines
22 Sep - 18 Oct	Scandinavian Airlines
16 Sep - 25 Sep	Icelandair
28 Sep - 02 Oct	Icelandair
16 Sep - 20 Sep	Icelandair
10 Sep - 17 Sep	Air Canada
08 Sep - 17 Sep	Air Canada
10 Sep - 16 Sep	Air Canada
30 Sep - 04 Oct	Icelandair
16 Sep - 21 Sep	Icelandair
11 Sep - 17 Sep	SWISS
14 Sep - 21 Sep	Air Canada
23 Sep - 18 Oct	Air Canada
25 Sep - 02 Oct	Icelandair
10 Sep - 04 Oct	United
08 Sep - 04 Oct	Icelandair
09 Sep - 04 Oct	Icelandair

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

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 Newark to Copenhagen in September from $418

Return flights