AirHint found the following cheapest return flights from Houston (HOU) to San Salvador (SAL) in December 2025 (see full year).

Return flights

02 Dec - 06 Dec	United	direct
02 Dec - 07 Dec	United	direct
02 Dec - 09 Dec	United	direct
02 Dec - 08 Dec	United	direct
04 Dec - 14 Dec	United	direct
01 Dec - 18 Dec	United	direct
14 Dec - 08 Jan	Aeromexico
20 Dec - 27 Dec	Aeromexico
30 Dec - 07 Jan	United	direct
10 Dec - 04 Jan	Avianca
20 Dec - 26 Dec	United	direct
20 Dec - 27 Dec	United	direct
29 Dec - 03 Jan	United	direct
24 Dec - 07 Jan	Viva
25 Dec - 03 Jan	Aeromexico
25 Dec - 03 Jan	Avianca	direct
27 Dec - 05 Jan	United	direct
24 Dec - 07 Jan	United	direct
26 Dec - 04 Jan	Avianca	direct

Also check the deals for one-way flights from Houston to San Salvador in December.

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 Houston to San Salvador in December from 324€

Return flights