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

Return flights

29 Dec - 11 Jan	Copa
07 Dec - 18 Dec	Spirit Airlines
30 Dec - 11 Jan	Copa
12 Dec - 19 Dec	Frontier Airlines	direct
27 Dec - 11 Jan	Copa
26 Dec - 11 Jan	Copa
28 Dec - 11 Jan	Copa
12 Dec - 31 Dec	Frontier Airlines	direct
25 Dec - 11 Jan	Copa
24 Dec - 11 Jan	Copa
18 Dec - 31 Dec	Frontier Airlines
15 Dec - 07 Jan	Spirit Airlines
22 Dec - 11 Jan	Copa
23 Dec - 11 Jan	Spirit Airlines
19 Dec - 19 Dec	Frontier Airlines	direct
19 Dec - 31 Dec	Frontier Airlines	direct
18 Dec - 31 Dec	Delta	direct

Also check the deals for one-way flights from Atlanta 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 Atlanta to San Salvador in December from 318€

Return flights