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

Return flights

30 Sep - 07 Oct	Lufthansa
29 Sep - 06 Oct	Air Canada
15 Sep - 17 Sep	Air Canada
04 Sep - 18 Sep	Delta
01 Sep - 15 Sep	Delta
01 Sep - 14 Sep	Delta
21 Sep - 12 Oct	Delta
23 Sep - 24 Oct	Delta
27 Sep - 04 Oct	Air Canada
26 Sep - 03 Oct	Delta
28 Sep - 05 Oct	Delta
25 Sep - 30 Sep	Delta
26 Sep - 01 Oct	Delta
25 Sep - 29 Sep	Delta
18 Sep - 27 Sep	Delta
13 Sep - 04 Oct	United
27 Sep - 01 Oct	Delta

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 346€

Return flights