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

Return flights

03 Sep - 10 Sep	SWISS
02 Sep - 09 Sep	SWISS
01 Sep - 08 Sep	SWISS
01 Sep - 30 Sep	SWISS
16 Sep - 30 Sep	SWISS
12 Sep - 27 Sep	Austrian Airlines
07 Sep - 13 Sep	Lufthansa
14 Sep - 04 Oct	SWISS
26 Sep - 01 Oct	Scandinavian Airlines
11 Sep - 21 Sep	Austrian Airlines
06 Sep - 20 Sep	Austrian Airlines
23 Sep - 12 Oct	SWISS
03 Sep - 27 Sep	Lufthansa
26 Sep - 15 Oct	Austrian Airlines
24 Sep - 18 Oct	SWISS
27 Sep - 13 Oct	SWISS
17 Sep - 04 Oct	SWISS

Also check the deals for one-way flights from New York to Bucharest 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 Bucharest in September from 335€

Return flights