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

Return flights

10 Sep - 17 Sep	Air Canada
10 Sep - 15 Sep	Air Canada
17 Sep - 22 Sep	Air Canada
15 Sep - 22 Sep	Icelandair
14 Sep - 21 Sep	Icelandair
18 Sep - 21 Sep	Icelandair
12 Sep - 16 Sep	Brussels Airlines
10 Sep - 14 Sep	Air Canada
22 Sep - 25 Sep	Scandinavian Airlines
17 Sep - 28 Sep	Air Canada
28 Sep - 02 Oct	Icelandair
30 Sep - 04 Oct	Icelandair
28 Sep - 02 Oct	Air France	direct
10 Sep - 04 Oct	United
10 Sep - 04 Oct	Air France	direct
30 Sep - 04 Oct	Air France	direct
18 Sep - 04 Oct	Brussels Airlines

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 392€

Return flights