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

Return flights

25 Sep - 07 Oct	Ryanair
05 Sep - 21 Sep	Lufthansa
17 Sep - 17 Oct	Lufthansa
20 Sep - 01 Oct	Lufthansa
10 Sep - 21 Sep	Lufthansa
25 Sep - 03 Oct	Ryanair
04 Sep - 11 Sep	Lufthansa
15 Sep - 23 Sep	Ryanair
15 Sep - 22 Sep	Lufthansa
19 Sep - 22 Sep	Lufthansa
15 Sep - 25 Sep	Ryanair
04 Sep - 10 Sep	Lufthansa
23 Sep - 30 Sep	Ryanair
10 Sep - 19 Sep	British Airways
22 Sep - 01 Oct	British Airways

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 $431

Return flights