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

Return flights

10 Sep - 17 Sep	Delta
15 Sep - 18 Sep	Delta
17 Sep - 25 Sep	Delta
09 Sep - 16 Sep	Delta
18 Sep - 23 Sep	Delta
24 Sep - 05 Oct	Korean Air
11 Sep - 17 Sep	Korean Air
11 Sep - 18 Sep	Korean Air
15 Sep - 21 Sep	Delta
08 Sep - 22 Sep	Delta
24 Sep - 28 Sep	Korean Air
29 Sep - 04 Oct	Delta
29 Sep - 03 Oct	Delta
27 Sep - 03 Oct	Air Canada
19 Sep - 04 Oct	Delta
26 Sep - 03 Oct	Frontier Airlines
28 Sep - 03 Oct	Korean Air
30 Sep - 13 Oct	Delta
30 Sep - 07 Oct	ANA
25 Sep - 01 Oct	Delta

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 656€

Return flights