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

Return flights

18 Sep - 24 Sep	Cathay Pacific
17 Sep - 24 Sep	Cathay Pacific
17 Sep - 23 Sep	Cathay Pacific
25 Sep - 07 Oct	Turkish Airlines
17 Sep - 22 Sep	Cathay Pacific
23 Sep - 01 Oct	Cathay Pacific
19 Sep - 13 Oct	Cathay Pacific
21 Sep - 02 Oct	Cathay Pacific
20 Sep - 20 Oct	Cathay Pacific
30 Sep - 11 Oct	Etihad Airways
18 Sep - 01 Oct	Cathay Pacific
21 Sep - 28 Sep	Cathay Pacific
25 Sep - 30 Sep	Norse Atlantic Airways
18 Sep - 06 Oct	Air India

Also check the deals for one-way flights from New York to Colombo 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 Colombo in September from $785

Return flights