Cheapest return flights from Dallas to San Juan in September from $380

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

Return flights

27 Sep - 02 Oct Southwest Airlines
25 Sep - 30 Sep Southwest Airlines
26 Sep - 29 Sep Southwest Airlines
22 Sep - 27 Sep Southwest Airlines
17 Sep - 20 Sep Delta
23 Sep - 28 Sep Southwest Airlines
18 Sep - 21 Sep Southwest Airlines
20 Sep - 22 Sep Southwest Airlines
16 Sep - 17 Sep Delta
20 Sep - 28 Sep Southwest Airlines
12 Sep - 19 Sep Delta

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

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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