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

Return flights

25 Aug - 08 Sep	Korean Air
31 Aug - 15 Sep	Delta
26 Aug - 04 Sep	Delta
28 Aug - 04 Sep	Delta
27 Aug - 03 Sep	ANA
27 Aug - 02 Sep	Japan Airlines
20 Aug - 28 Aug	Delta
20 Aug - 27 Aug	Delta
31 Aug - 04 Sep	Delta
26 Aug - 02 Sep	Delta
31 Aug - 14 Sep	Delta
25 Aug - 01 Sep	Delta
23 Aug - 27 Aug	Delta
23 Aug - 31 Aug	Delta
21 Aug - 28 Aug	Delta
24 Aug - 30 Aug	Philippine Airlines
20 Aug - 22 Aug	IndiGo
17 Aug - 24 Aug	KLM
27 Aug - 30 Aug	Korean Air
19 Aug - 23 Aug	KLM

Also check the deals for one-way flights from New York to Singapore in August.

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 August from 646€

Return flights