Cheapest return flights from Philadelphia to San Jose in September from $211

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

Return flights

12 Sep - 17 Sep Spirit Airlines
30 Sep - 07 Oct Spirit Airlines
30 Sep - 08 Oct Spirit Airlines
18 Sep - 07 Oct Spirit Airlines
08 Sep - 19 Sep Spirit Airlines
08 Sep - 17 Sep Spirit Airlines
12 Sep - 14 Sep Spirit Airlines
10 Sep - 17 Sep Spirit Airlines
15 Sep - 17 Sep Spirit Airlines
19 Sep - 07 Oct Spirit Airlines
19 Sep - 08 Oct Spirit Airlines
07 Sep - 10 Sep Spirit Airlines
16 Sep - 20 Sep Spirit Airlines
24 Sep - 07 Oct Spirit Airlines
24 Sep - 08 Oct Spirit Airlines
25 Sep - 07 Oct Spirit Airlines
25 Sep - 08 Oct Spirit Airlines
18 Sep - 08 Oct Spirit Airlines
24 Sep - 27 Sep Spirit Airlines
15 Sep - 19 Sep Spirit Airlines

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

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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