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

Return flights

21 Sep - 24 Sep	Philippine Airlines
24 Sep - 29 Sep	Philippine Airlines
26 Sep - 29 Sep	Philippine Airlines
23 Sep - 30 Sep	Korean Air
22 Sep - 29 Sep	Korean Air
19 Sep - 22 Sep	Philippine Airlines
21 Sep - 06 Oct	Korean Air
21 Sep - 01 Oct	Philippine Airlines
21 Sep - 07 Oct	Philippine Airlines
21 Sep - 14 Oct	Philippine Airlines
30 Sep - 03 Oct	Turkish Airlines
25 Sep - 03 Oct	Turkish Airlines
30 Sep - 08 Oct	Turkish Airlines
30 Sep - 10 Oct	Turkish Airlines
25 Sep - 05 Oct	ANA
28 Sep - 04 Oct	Korean Air
24 Sep - 30 Sep	Delta
22 Sep - 25 Sep	Delta
28 Sep - 30 Sep	Japan Airlines
20 Sep - 30 Sep	jetBlue

Also check the deals for one-way flights from New York to Singapore 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 Singapore in September from $681

Return flights