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

Return flights

10 Sep - 24 Sep	Air Canada
30 Sep - 07 Oct	Icelandair
10 Sep - 16 Sep	Finnair
10 Sep - 04 Oct	Icelandair
25 Sep - 02 Oct	Icelandair
22 Sep - 18 Oct	Icelandair
14 Sep - 04 Oct	Icelandair
27 Sep - 04 Oct	Icelandair
16 Sep - 24 Sep	Icelandair
16 Sep - 25 Sep	Icelandair
22 Sep - 27 Sep	Icelandair
03 Sep - 27 Sep	Icelandair
09 Sep - 15 Sep	Icelandair
17 Sep - 24 Sep	Icelandair
21 Sep - 28 Sep	Icelandair
23 Sep - 30 Sep	Icelandair
28 Sep - 02 Oct	Icelandair
29 Sep - 06 Oct	Scandinavian Airlines	direct
17 Sep - 11 Oct	Scandinavian Airlines
25 Sep - 02 Oct	Scandinavian Airlines	direct

Also check the deals for one-way flights from New York 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 New York to Copenhagen in September from 380€

Return flights