Cheapest return flights from Philadelphia to San Juan in April from $137

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

Return flights

12 Apr - 16 Apr Frontier Airlines direct
23 Apr - 30 Apr Frontier Airlines direct
18 Apr - 25 Apr Frontier Airlines direct
25 Apr - 28 Apr Frontier Airlines direct
04 Apr - 18 Apr Frontier Airlines direct
22 Apr - 23 Apr Spirit Airlines direct
24 Apr - 28 Apr Spirit Airlines direct
10 Apr - 14 Apr Spirit Airlines direct
08 Apr - 14 Apr Spirit Airlines direct
25 Apr - 29 Apr Spirit Airlines direct
18 Apr - 05 May Spirit Airlines direct
18 Apr - 01 May Spirit Airlines direct
18 Apr - 06 May Spirit Airlines direct
18 Apr - 09 May Spirit Airlines direct
28 Apr - 05 May Spirit Airlines direct
28 Apr - 14 May Spirit Airlines direct
28 Apr - 16 May Spirit Airlines direct
28 Apr - 01 May Spirit Airlines direct
28 Apr - 06 May Spirit Airlines direct
28 Apr - 09 May Spirit Airlines direct

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

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