Cheapest one-way flights from Philadelphia to Santiago in May from $131

Best time to book flights for Philadelphia (PHL) to Santiago (STI) flights at AirHint

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

One-Way flights

05 May Frontier Airlines
02 May Frontier Airlines

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

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.

Book a cheap hotel in Santiago

Cheap car rent in Santiago