Cheapest return flights from Philadelphia to San Jose in April from $305

AirHint found the following cheapest return flights from Philadelphia (PHL) to San Jose (SJO) in April 2026 (see full year).

Return flights

09 Apr - 14 Apr Spirit Airlines
10 Apr - 15 Apr Spirit Airlines
09 Apr - 16 Apr Spirit Airlines
13 Apr - 16 Apr Spirit Airlines
13 Apr - 14 Apr Spirit Airlines
24 Apr - 08 May Spirit Airlines
09 Apr - 17 Apr Spirit Airlines
13 Apr - 17 Apr Spirit Airlines
30 Apr - 09 May United
10 Apr - 18 Apr Spirit Airlines
07 Apr - 14 Apr Frontier Airlines
16 Apr - 20 Apr Frontier Airlines
27 Apr - 08 May Spirit Airlines
19 Apr - 08 May Spirit Airlines

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

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