AirHint found the following cheapest return flights from Philadelphia (PHL) to San Jose (SJO) in October 2025 (see full year).

Return flights

11 Oct - 14 Oct	Spirit Airlines
16 Oct - 23 Oct	Spirit Airlines
17 Oct - 23 Oct	Spirit Airlines
17 Oct - 30 Oct	Spirit Airlines
23 Oct - 30 Oct	Spirit Airlines
27 Oct - 30 Oct	Spirit Airlines
23 Oct - 27 Oct	Spirit Airlines
03 Oct - 05 Oct	Spirit Airlines
10 Oct - 14 Oct	Spirit Airlines
02 Oct - 04 Oct	Spirit Airlines
17 Oct - 01 Nov	Spirit Airlines
23 Oct - 01 Nov	Spirit Airlines
27 Oct - 01 Nov	Spirit Airlines
30 Oct - 04 Nov	Spirit Airlines
22 Oct - 01 Nov	Spirit Airlines

Also check the deals for one-way flights from Philadelphia to San Jose in October.

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 Philadelphia to San Jose in October from $226

Return flights