AirHint found the following cheapest return flights from Philipsburg (SXM) to San Juan (SJU) in August 2025 (see full year).

Return flights

01 Aug - 04 Aug	Frontier Airlines	direct
01 Aug - 08 Aug	Frontier Airlines	direct
04 Aug - 07 Aug	Frontier Airlines
20 Aug - 29 Aug	Arajet
21 Aug - 24 Aug	Arajet
19 Aug - 26 Aug	Winair/Windward Islands Airways
19 Aug - 28 Aug	Winair/Windward Islands Airways
19 Aug - 29 Aug	Winair/Windward Islands Airways

Also check the deals for one-way flights from Philipsburg to San Juan in August.

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 Philipsburg to San Juan in August from $143

Return flights