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

Return flights

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

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.

Book a cheap hotel in Copenhagen

Cheap car rent in Copenhagen

Cheapest return flights from New York to Copenhagen in September from $428

Return flights