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

Return flights

08 Sep - 22 Sep	SWISS
06 Sep - 08 Oct	Air Canada
08 Sep - 18 Sep	SWISS
07 Sep - 22 Sep	SWISS
09 Sep - 22 Sep	SWISS
10 Sep - 22 Sep	SWISS
10 Sep - 20 Sep	SWISS
06 Sep - 19 Sep	SWISS
11 Sep - 22 Sep	SWISS
12 Sep - 22 Sep	SWISS
13 Sep - 24 Sep	United
30 Sep - 14 Oct	SWISS
22 Sep - 01 Oct	SWISS
23 Sep - 01 Oct	SWISS
21 Sep - 01 Oct	SWISS
12 Sep - 11 Oct	SWISS
20 Sep - 12 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 341€

Return flights