AirHint found the following cheapest return flights from Houston (HOU) to San Salvador (SAL) in December 2026 (see full year).
Return flights
| 05 Dec - 10 Dec | Volaris El Salvador | direct | |
| 30 Dec - 13 Jan | United | direct | |
| 09 Dec - 29 Dec | United | direct | |
| 17 Dec - 05 Jan | Volaris El Salvador | direct | |
| 18 Dec - 02 Jan | Aeromexico |
Also check the deals for one-way flights from Houston to San Salvador in December.
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