Cheapest return flights from San Francisco to San Juan in August from $347

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

09 Aug - 16 Aug jetBlue
31 Aug - 05 Sep American Airlines
02 Aug - 07 Aug United
01 Aug - 07 Aug Sun Country Airlines
28 Aug - 08 Sep American Airlines
06 Aug - 11 Aug American Airlines
08 Aug - 10 Aug Frontier Airlines
07 Aug - 11 Aug Frontier Airlines
29 Aug - 01 Sep jetBlue
14 Aug - 18 Aug Southwest Airlines

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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan