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

Return flights

30 Dec - 13 Jan	Frontier Airlines
30 Dec - 13 Jan	Frontier Airlines	direct
29 Dec - 13 Jan	Frontier Airlines
26 Dec - 10 Jan	Frontier Airlines
25 Dec - 06 Jan	Spirit Airlines
31 Dec - 13 Jan	Spirit Airlines
29 Dec - 13 Jan	Avianca	direct
30 Dec - 04 Jan	Frontier Airlines	direct
31 Dec - 20 Jan	Spirit Airlines
31 Dec - 07 Jan	Spirit Airlines
25 Dec - 28 Dec	Spirit Airlines
26 Dec - 30 Dec	Frontier Airlines
25 Dec - 28 Dec	Avianca	direct
25 Dec - 29 Dec	Avianca	direct
25 Dec - 31 Dec	Avianca	direct
26 Dec - 30 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 $326

Return flights