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
14 Aug - 26 Aug	Delta
20 Aug - 27 Aug	Delta
18 Aug - 02 Sep	Delta
19 Aug - 27 Aug	Delta
31 Aug - 07 Sep	Korean Air
25 Aug - 07 Sep	Korean Air
13 Aug - 04 Sep	Korean Air
20 Aug - 28 Aug	Delta
18 Aug - 25 Aug	Delta
12 Aug - 24 Aug	Delta
06 Aug - 28 Aug	Delta
10 Aug - 20 Aug	Delta
04 Aug - 25 Aug	Delta
05 Aug - 20 Aug	Delta
30 Aug - 06 Sep	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 648€

Return flights