AirHint found the following cheapest return flights from Santiago (STI) to New York (JFK) in September 2025 (see full year).

Return flights

26 Sep - 11 Oct	jetBlue	direct
25 Sep - 25 Oct	jetBlue	direct
26 Sep - 30 Sep	Delta	direct
26 Sep - 01 Oct	jetBlue	direct
26 Sep - 02 Oct	Delta	direct
26 Sep - 24 Oct	Delta	direct
26 Sep - 25 Oct	Delta	direct
24 Sep - 29 Sep	jetBlue
23 Sep - 13 Oct	jetBlue	direct
30 Sep - 08 Oct	jetBlue	direct
30 Sep - 23 Oct	jetBlue	direct
28 Sep - 19 Oct	jetBlue
20 Sep - 27 Sep	jetBlue	direct
19 Sep - 30 Sep	Delta	direct
24 Sep - 29 Sep	Delta	direct
23 Sep - 27 Sep	Delta	direct
19 Sep - 28 Sep	Delta	direct
21 Sep - 22 Sep	jetBlue
22 Sep - 29 Sep	Delta	direct
23 Sep - 28 Sep	Delta	direct

Also check the deals for one-way flights from Santiago to New York 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 Santiago to New York in September from 274€

Return flights