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

Return flights

12 Jul - 13 Jul	Southwest Airlines
12 Jul - 18 Jul	Southwest Airlines
27 Jul - 30 Jul	Southwest Airlines
15 Jul - 20 Jul	Southwest Airlines
14 Jul - 20 Jul	Southwest Airlines
16 Jul - 23 Jul	Southwest Airlines
13 Jul - 19 Jul	Southwest Airlines
27 Jul - 31 Jul	Southwest Airlines
28 Jul - 31 Jul	Southwest Airlines
22 Jul - 28 Jul	Southwest Airlines
31 Jul - 03 Aug	Southwest Airlines
31 Jul - 04 Aug	Southwest Airlines

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

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 July from $354

Return flights