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

Return flights

27 Jul - 04 Aug	Frontier Airlines
29 Jul - 22 Aug	Frontier Airlines
27 Jul - 13 Aug	Frontier Airlines
28 Jul - 31 Jul	United	direct
27 Jul - 01 Aug	United	direct
27 Jul - 20 Aug	Frontier Airlines
27 Jul - 31 Jul	Frontier Airlines
30 Jul - 02 Aug	United	direct
28 Jul - 04 Aug	United	direct
27 Jul - 04 Aug	United	direct
27 Jul - 13 Aug	United	direct
27 Jul - 03 Aug	Frontier Airlines
27 Jul - 28 Jul	jetBlue	direct
27 Jul - 31 Jul	United	direct

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

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 Newark to Santiago in July from 335€

Return flights