Cheapest return flights from Dallas to San Juan in December from $364

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

Return flights

10 Dec - 15 Dec Southwest Airlines
11 Dec - 14 Dec Southwest Airlines
03 Dec - 08 Dec Southwest Airlines
03 Dec - 31 Dec Southwest Airlines
21 Dec - 25 Dec Southwest Airlines
28 Dec - 01 Jan Southwest Airlines
20 Dec - 27 Dec Southwest Airlines
29 Dec - 03 Jan Southwest Airlines
25 Dec - 05 Jan Southwest Airlines
23 Dec - 03 Jan Southwest Airlines
18 Dec - 22 Dec Delta
19 Dec - 04 Jan Southwest Airlines
19 Dec - 03 Jan Southwest Airlines

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

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