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

Return flights

09 Sep - 16 Sep	Air Canada
10 Sep - 17 Sep	Air Canada
08 Sep - 15 Sep	Air Canada
08 Sep - 14 Oct	SWISS
12 Sep - 19 Sep	SWISS
11 Sep - 18 Sep	SWISS
15 Sep - 15 Oct	Air Canada
16 Sep - 23 Sep	Air Canada
22 Sep - 29 Sep	Air Canada
24 Sep - 08 Oct	SWISS
15 Sep - 22 Sep	Air Canada
14 Sep - 21 Sep	SWISS
01 Sep - 07 Sep	Lufthansa
15 Sep - 11 Oct	SWISS
20 Sep - 01 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 327€

Return flights