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

Return flights

09 Sep - 16 Sep	Avianca
13 Sep - 20 Sep	United	direct
12 Sep - 17 Sep	Avianca	direct
14 Sep - 28 Sep	United	direct
16 Sep - 30 Sep	United	direct
09 Sep - 16 Sep	United	direct
07 Sep - 21 Sep	United	direct
09 Sep - 23 Sep	United	direct
13 Sep - 27 Sep	United	direct
02 Sep - 16 Sep	United	direct
30 Sep - 05 Oct	United	direct
20 Sep - 04 Oct	United	direct
21 Sep - 05 Oct	United	direct
23 Sep - 07 Oct	United	direct
27 Sep - 11 Oct	United	direct
28 Sep - 12 Oct	United	direct
30 Sep - 14 Oct	United	direct
30 Sep - 06 Oct	United	direct
17 Sep - 01 Oct	United	direct
18 Sep - 02 Oct	United	direct

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

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 September from $217

Return flights