AirHint found the following cheapest return flights from St. Petersburg (PIE) to San Juan (SJU) in June 2025 (see full year).

Return flights

20 Jun - 29 Jun	Allegiant Air
25 Jun - 29 Jun	Allegiant Air
09 Jun - 16 Jun	Allegiant Air
26 Jun - 30 Jun	Allegiant Air
23 Jun - 28 Jun	Allegiant Air
20 Jun - 23 Jun	Allegiant Air
11 Jun - 15 Jun	Allegiant Air
26 Jun - 29 Jun	Allegiant Air
06 Jun - 09 Jun	Allegiant Air
18 Jun - 21 Jun	Allegiant Air

Also check the deals for one-way flights from St. Petersburg 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 St. Petersburg to San Juan in June from $456

Return flights