Cheapest return flights from Philadelphia to San Juan in May from $188

Best time to book flights for Philadelphia (PHL) to San Juan (SJU) flights at AirHint

AirHint found the following cheapest return flights from Philadelphia (PHL) to San Juan (SJU) in May 2025 (see full year).

Return flights

06 May - 09 May Spirit Airlines
06 May - 11 May Spirit Airlines
03 May - 10 May Spirit Airlines
06 May - 17 May Spirit Airlines
05 May - 11 May Spirit Airlines
03 May - 08 May Spirit Airlines
06 May - 08 May Spirit Airlines
05 May - 09 May Spirit Airlines
05 May - 18 May Spirit Airlines
03 May - 07 May Spirit Airlines
28 May - 01 Jun Frontier Airlines direct
29 May - 01 Jun Frontier Airlines direct
23 May - 01 Jun Frontier Airlines direct
29 May - 02 Jun Spirit Airlines direct
31 May - 04 Jun Frontier Airlines direct
22 May - 01 Jun Frontier Airlines direct
29 May - 03 Jun Frontier Airlines direct
02 May - 03 Jun Spirit Airlines direct
28 May - 03 Jun Frontier Airlines direct
30 May - 09 Jun Frontier Airlines

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

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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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