Cheapest return flights from San Francisco to San Juan in August from 450€

Best time to book flights for San Francisco (SFO) to San Juan (SJU) flights at AirHint

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

Return flights

16 Aug - 20 Aug United
30 Aug - 03 Sep United
23 Aug - 27 Aug United
20 Aug - 27 Aug United
16 Aug - 18 Aug United
21 Aug - 27 Aug Southwest Airlines
04 Aug - 11 Aug United
05 Aug - 11 Aug United
04 Aug - 09 Aug United
09 Aug - 16 Aug Southwest Airlines
22 Aug - 28 Aug United

Also check the deals for one-way flights from San Francisco 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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