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

Return flights

05 Dec - 07 Dec	Avianca	direct
05 Dec - 08 Dec	Avianca	direct
08 Dec - 15 Dec	Avianca
12 Dec - 15 Dec	Avianca
16 Dec - 09 Jan	Avianca
04 Dec - 11 Dec	Avianca
13 Dec - 31 Dec	Avianca
29 Dec - 07 Jan	Avianca
16 Dec - 15 Jan	Avianca
04 Dec - 08 Dec	Avianca
15 Dec - 19 Dec	Avianca
25 Dec - 08 Jan	Avianca
25 Dec - 09 Jan	Avianca
25 Dec - 07 Jan	Avianca
29 Dec - 07 Jan	Frontier Airlines	direct
12 Dec - 12 Dec	Copa
28 Dec - 07 Jan	Avianca
20 Dec - 21 Dec	Avianca
26 Dec - 03 Jan	Avianca
26 Dec - 02 Jan	Avianca

Also check the deals for one-way flights from Miami 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 Miami to San Salvador in December from 172€

Return flights