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

Return flights

09 Sep - 16 Sep	Korean Air
11 Sep - 21 Sep	Korean Air
10 Sep - 21 Sep	Korean Air
10 Sep - 22 Sep	Korean Air
11 Sep - 22 Sep	Korean Air
02 Sep - 22 Sep	Korean Air
04 Sep - 11 Sep	Delta
01 Sep - 28 Sep	Korean Air
18 Sep - 25 Sep	Korean Air
12 Sep - 24 Sep	Korean Air
27 Sep - 06 Oct	Korean Air
24 Sep - 05 Oct	United
30 Sep - 06 Oct	Air Canada

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 $743

Return flights