Cheapest return flights from Newark to Santiago in September from $311

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

Return flights

25 Sep - 29 Sep Spirit Airlines
03 Sep - 10 Sep Spirit Airlines
05 Sep - 09 Sep Spirit Airlines
25 Sep - 30 Sep Spirit Airlines
17 Sep - 24 Sep Spirit Airlines
06 Sep - 22 Sep Spirit Airlines
10 Sep - 25 Sep Spirit Airlines
17 Sep - 29 Sep Spirit Airlines
08 Sep - 24 Sep Spirit Airlines
19 Sep - 21 Sep United direct
21 Sep - 05 Oct United direct
22 Sep - 06 Oct United direct
23 Sep - 07 Oct United direct
24 Sep - 08 Oct United direct
25 Sep - 09 Oct United direct
26 Sep - 10 Oct United direct
27 Sep - 11 Oct United direct
28 Sep - 12 Oct United direct
29 Sep - 13 Oct United direct
30 Sep - 14 Oct United direct

Also check the deals for one-way flights from Newark to Santiago in September.

Skyscanner

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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