Cheapest return flights from Portland to San Juan in August from 369€

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

Return flights

03 Aug - 06 Aug Spirit Airlines
15 Aug - 20 Aug United
15 Aug - 22 Aug United
03 Aug - 07 Aug Spirit Airlines
01 Aug - 06 Aug Spirit Airlines
01 Aug - 07 Aug Spirit Airlines
29 Aug - 07 Sep United
26 Aug - 02 Sep United
17 Aug - 24 Aug United
28 Aug - 01 Sep Alaska Airlines

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

Skyscanner

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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