Cheapest return flights from Austin to San Juan in August from 244€

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

Return flights

24 Aug - 28 Aug Frontier Airlines
18 Aug - 22 Aug Frontier Airlines
28 Aug - 31 Aug Frontier Airlines
25 Aug - 28 Aug Spirit Airlines
21 Aug - 24 Aug Frontier Airlines
31 Aug - 07 Sep Frontier Airlines
16 Aug - 18 Aug United
22 Aug - 28 Aug Spirit Airlines
21 Aug - 28 Aug Spirit Airlines
22 Aug - 25 Aug Frontier Airlines
21 Aug - 26 Aug Frontier Airlines
28 Aug - 01 Sep Spirit Airlines
29 Aug - 01 Sep Spirit Airlines
25 Aug - 07 Sep Spirit Airlines
29 Aug - 07 Sep Spirit Airlines
24 Aug - 07 Sep Spirit Airlines
27 Aug - 02 Sep Spirit Airlines
22 Aug - 07 Sep Spirit Airlines
21 Aug - 07 Sep Spirit Airlines
31 Aug - 01 Sep Spirit Airlines

Also check the deals for one-way flights from Austin 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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