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

Return flights

30 Sep - 09 Oct	Finnair
30 Sep - 08 Oct	Finnair
21 Sep - 08 Oct	British Airways
10 Sep - 25 Sep	British Airways
29 Sep - 09 Oct	Scandinavian Airlines
23 Sep - 14 Oct	Aer Lingus
29 Sep - 07 Oct	Iberia
21 Sep - 07 Oct	Aer Lingus
21 Sep - 10 Oct	Aer Lingus
29 Sep - 06 Oct	Scandinavian Airlines
18 Sep - 24 Sep	Scandinavian Airlines
27 Sep - 07 Oct	Aer Lingus
21 Sep - 25 Sep	Scandinavian Airlines
07 Sep - 14 Sep	Condor
07 Sep - 20 Sep	Condor
15 Sep - 20 Sep	Condor
17 Sep - 21 Sep	Condor
05 Sep - 14 Sep	Condor
10 Sep - 17 Sep	Condor
14 Sep - 20 Sep	Condor

Also check the deals for one-way flights from New York to Prague 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 Prague in September from $403

Return flights