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

Return flights

09 Jun - 10 Jun	Spirit Airlines	direct
08 Jun - 10 Jun	Spirit Airlines	direct
06 Jun - 10 Jun	Spirit Airlines	direct
06 Jun - 09 Jun	Spirit Airlines	direct
08 Jun - 09 Jun	Spirit Airlines	direct
05 Jun - 09 Jun	jetBlue	direct
09 Jun - 09 Jun	Spirit Airlines
04 Jun - 10 Jun	Spirit Airlines	direct
09 Jun - 15 Jun	Spirit Airlines	direct
01 Jun - 26 Jun	jetBlue	direct

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

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 Juan in June from $152

Return flights