Cheapest one-way flights from Philadelphia to Santiago in August from $162

AirHint found the following cheapest one-way flights from Philadelphia (PHL) to Santiago (STI) in August 2025 (see full year).

One-Way flights

25 Aug Frontier Airlines
14 Aug Spirit Airlines

Also check the deals for return flights from Philadelphia to Santiago in August.

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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