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

Return flights

16 Aug - 22 Aug	Delta
23 Aug - 28 Aug	Delta
20 Aug - 26 Aug	Southwest Airlines
19 Aug - 24 Aug	Southwest Airlines
14 Aug - 21 Aug	Southwest Airlines
27 Aug - 31 Aug	Southwest Airlines
13 Aug - 17 Aug	Southwest Airlines
21 Aug - 26 Aug	Southwest Airlines
20 Aug - 25 Aug	Southwest Airlines
08 Aug - 10 Aug	Southwest Airlines
28 Aug - 02 Sep	Southwest Airlines

Also check the deals for one-way flights from Dallas to San Juan in August.

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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Cheapest return flights from Dallas to San Juan in August from $360

Return flights