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

Return flights

01 Sep - 28 Sep	Korean Air
25 Sep - 05 Oct	Korean Air
15 Sep - 23 Sep	Korean Air
02 Sep - 09 Sep	Korean Air
15 Sep - 22 Sep	Korean Air
25 Sep - 06 Oct	Korean Air
09 Sep - 21 Sep	Korean Air
01 Sep - 15 Sep	Korean Air
17 Sep - 25 Sep	Delta
09 Sep - 16 Sep	Korean Air
22 Sep - 28 Sep	Korean Air
15 Sep - 30 Oct	Korean Air
10 Sep - 24 Sep	Delta
19 Sep - 05 Oct	Korean Air
18 Sep - 02 Oct	Korean Air
28 Sep - 03 Oct	IndiGo
30 Sep - 08 Oct	United
19 Sep - 04 Oct	IndiGo
22 Sep - 03 Oct	Korean Air
27 Sep - 03 Oct	IndiGo

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 $738

Return flights