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

Return flights

07 Sep - 23 Sep	SWISS
02 Sep - 09 Sep	SWISS
01 Sep - 16 Sep	Austrian Airlines
11 Sep - 25 Sep	SWISS
03 Sep - 15 Sep	SWISS
10 Sep - 20 Oct	SWISS
30 Sep - 14 Oct	SWISS
01 Sep - 15 Sep	Austrian Airlines
03 Sep - 27 Sep	Lufthansa
15 Sep - 11 Oct	SWISS
22 Sep - 18 Oct	SWISS
21 Sep - 05 Oct	SWISS
24 Sep - 18 Oct	Air Canada
06 Sep - 27 Sep	Austrian Airlines
05 Sep - 09 Sep	United
06 Sep - 10 Sep	Scandinavian Airlines
20 Sep - 11 Oct	Austrian Airlines

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 $393

Return flights