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

Return flights

01 Sep - 07 Sep	Icelandair
01 Sep - 12 Sep	Finnair
28 Sep - 05 Oct	Icelandair
27 Sep - 05 Oct	Icelandair
17 Sep - 28 Sep	Icelandair
19 Sep - 30 Sep	Icelandair
19 Sep - 28 Sep	Icelandair
29 Sep - 06 Oct	Scandinavian Airlines	direct
10 Sep - 16 Sep	Finnair
09 Sep - 16 Sep	Finnair
10 Sep - 17 Sep	Scandinavian Airlines
07 Sep - 10 Sep	Norse Atlantic Airways
21 Sep - 30 Sep	Finnair
24 Sep - 01 Oct	Finnair
28 Sep - 02 Oct	Air France	direct
26 Sep - 05 Oct	Icelandair
29 Sep - 04 Oct	Icelandair
26 Sep - 03 Oct	Icelandair
24 Sep - 01 Oct	Scandinavian Airlines	direct
30 Sep - 07 Oct	Delta	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 341€

Return flights