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

One-Way flights

23 Aug	Spirit Airlines
13 Aug	Spirit Airlines
12 Aug	Spirit Airlines
20 Aug	Spirit Airlines
17 Aug	Spirit Airlines
01 Aug	Spirit Airlines
24 Aug	Spirit Airlines
05 Aug	Spirit Airlines
02 Aug	Spirit Airlines
08 Aug	Spirit Airlines

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

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 one-way flights from Philadelphia to San Jose in August from $146

One-Way flights