Cheapest return SFO–SJU flights, July

AirHint found the following cheapest return flights from San Francisco (SFO) to San Juan (SJU) in July 2026 (see full year).

Return flights

08 Jul - 14 Jul Frontier Airlines
05 Jul - 09 Jul Delta
07 Jul - 16 Jul Frontier Airlines
15 Jul - 22 Jul Frontier Airlines
27 Jul - 07 Aug Frontier Airlines
09 Jul - 16 Jul Frontier Airlines
18 Jul - 01 Aug Frontier Airlines
28 Jul - 01 Aug Frontier Airlines
15 Jul - 19 Jul Frontier Airlines
13 Jul - 23 Jul Frontier Airlines
19 Jul - 25 Jul Frontier Airlines
24 Jul - 28 Jul Southwest Airlines
16 Jul - 23 Jul Frontier Airlines

Also check the deals for one-way flights from San Francisco to San Juan in July.

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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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