Cheapest return flights from Austin to San Juan in August from 224€

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

Return flights

17 Aug - 29 Aug Spirit Airlines
17 Aug - 05 Sep Spirit Airlines
25 Aug - 29 Aug Frontier Airlines
07 Aug - 21 Aug Frontier Airlines
21 Aug - 24 Aug Frontier Airlines
10 Aug - 14 Aug Frontier Airlines
17 Aug - 21 Aug Spirit Airlines
24 Aug - 28 Aug Southwest Airlines
25 Aug - 05 Sep Spirit Airlines
11 Aug - 29 Aug Spirit Airlines
14 Aug - 18 Aug Frontier Airlines
15 Aug - 17 Aug Frontier Airlines
28 Aug - 05 Sep Frontier Airlines
24 Aug - 05 Sep Spirit Airlines
18 Aug - 05 Sep Spirit Airlines
22 Aug - 05 Sep Spirit Airlines
29 Aug - 05 Sep Spirit Airlines
30 Aug - 01 Sep Frontier Airlines
21 Aug - 05 Sep Spirit Airlines
30 Aug - 02 Sep Delta

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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