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

Return flights

01 Sep - 10 Sep	Finnair
09 Sep - 16 Sep	Finnair
15 Sep - 24 Sep	Finnair
19 Sep - 05 Oct	Icelandair
24 Sep - 25 Sep	Icelandair
15 Sep - 19 Sep	Icelandair
07 Sep - 15 Sep	Icelandair
08 Sep - 15 Sep	Icelandair
07 Sep - 09 Sep	Icelandair
02 Sep - 05 Sep	Icelandair
01 Sep - 15 Sep	Icelandair
24 Sep - 06 Oct	Finnair
28 Sep - 02 Oct	Icelandair
24 Sep - 06 Oct	Scandinavian Airlines	direct
28 Sep - 02 Oct	Air France	direct
19 Sep - 05 Oct	Virgin Atlantic	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 369€

Return flights