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

Return flights

09 Sep - 16 Sep	Delta
17 Sep - 24 Sep	Delta
16 Sep - 22 Sep	Delta
03 Sep - 25 Sep	Delta
24 Sep - 29 Oct	Delta
18 Sep - 29 Sep	IndiGo
10 Sep - 19 Sep	Korean Air
01 Sep - 28 Sep	IndiGo
20 Sep - 22 Sep	IndiGo
10 Sep - 20 Sep	Delta
24 Sep - 05 Oct	ANA
24 Sep - 22 Oct	Ethiopian Airlines
05 Sep - 20 Sep	Delta
15 Sep - 03 Oct	IndiGo
25 Sep - 05 Oct	United
12 Sep - 07 Oct	United
12 Sep - 06 Oct	ANA
24 Sep - 13 Oct	American Airlines

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 654€

Return flights