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

Return flights

02 Sep - 12 Sep	Frontier Airlines
06 Sep - 16 Sep	Frontier Airlines
18 Sep - 28 Sep	Frontier Airlines
20 Sep - 30 Sep	Frontier Airlines
04 Sep - 14 Sep	Frontier Airlines
16 Sep - 26 Sep	Frontier Airlines
24 Sep - 04 Oct	Frontier Airlines
10 Sep - 20 Sep	Frontier Airlines
14 Sep - 24 Sep	Frontier Airlines
22 Sep - 02 Oct	Frontier Airlines
08 Sep - 18 Sep	Frontier Airlines
12 Sep - 22 Sep	Frontier Airlines

Also check the deals for one-way flights from New York to Manaus 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 Manaus in September from 406€

Return flights