Cheapest return flights from Kansas City to San Salvador in December from $434

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

Return flights

12 Dec - 28 Dec Spirit Airlines
02 Dec - 16 Dec Spirit Airlines
29 Dec - 15 Jan Spirit Airlines
22 Dec - 15 Jan Frontier Airlines
07 Dec - 06 Jan Allegiant Air
23 Dec - 28 Dec Spirit Airlines
29 Dec - 07 Jan Frontier Airlines
22 Dec - 28 Dec Frontier Airlines
21 Dec - 28 Dec Spirit Airlines
22 Dec - 07 Jan Spirit Airlines
18 Dec - 05 Jan Spirit Airlines
20 Dec - 03 Jan Spirit Airlines

Also check the deals for one-way flights from Kansas City to San Salvador in December.

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