AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to San Salvador (SAL) in December 2025 (see full year).

Return flights

05 Dec - 09 Dec	Spirit Airlines
10 Dec - 14 Dec	Spirit Airlines
05 Dec - 09 Dec	Avianca	direct
04 Dec - 08 Dec	Avianca	direct
07 Dec - 16 Dec	Spirit Airlines
10 Dec - 14 Dec	Avianca	direct
30 Dec - 13 Jan	Avianca	direct
15 Dec - 15 Jan	Spirit Airlines
15 Dec - 22 Dec	Spirit Airlines
15 Dec - 22 Dec	Avianca	direct
02 Dec - 16 Dec	Spirit Airlines
15 Dec - 15 Jan	Avianca	direct
27 Dec - 11 Jan	Spirit Airlines
30 Dec - 24 Jan	Avianca	direct
23 Dec - 23 Jan	Frontier Airlines	direct
29 Dec - 13 Jan	Avianca	direct
15 Dec - 07 Jan	Avianca
13 Dec - 10 Jan	Avianca
30 Dec - 05 Jan	Key Lime Air dba Denver Air Connection
11 Dec - 18 Dec	Avianca	direct

Also check the deals for one-way flights from Dallas-Fort Worth 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 Dallas-Fort Worth to San Salvador in December from $237

Return flights