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

Return flights

04 Sep - 30 Sep	British Airways
25 Sep - 30 Sep	British Airways
15 Sep - 25 Sep	British Airways
27 Sep - 05 Oct	British Airways
18 Sep - 05 Oct	British Airways
27 Sep - 06 Oct	British Airways
15 Sep - 21 Sep	British Airways
26 Sep - 29 Sep	Lufthansa
03 Sep - 10 Sep	British Airways
05 Sep - 18 Sep	British Airways
06 Sep - 14 Sep	British Airways
12 Sep - 14 Sep	British Airways
12 Sep - 19 Sep	British Airways
20 Sep - 01 Oct	Lufthansa
29 Sep - 05 Oct	Austrian Airlines
28 Sep - 04 Oct	Ryanair

Also check the deals for one-way flights from Cologne to New York 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 Cologne to New York in September from 386€

Return flights