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

Return flights

31 Aug - 15 Sep	Korean Air
18 Aug - 27 Aug	Delta
20 Aug - 27 Aug	Delta
18 Aug - 03 Sep	Delta
19 Aug - 26 Aug	Delta
07 Aug - 14 Aug	Delta
31 Aug - 07 Sep	Delta
16 Aug - 26 Aug	Korean Air
16 Aug - 31 Aug	Delta
09 Aug - 26 Aug	Korean Air
21 Aug - 31 Aug	Delta
13 Aug - 20 Aug	Delta
24 Aug - 01 Sep	Delta
11 Aug - 22 Aug	Delta

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 $761

Return flights