Cheapest return flights from Boston to San Salvador in January from $238

AirHint found the following cheapest return flights from Boston (BOS) to San Salvador (SAL) in January 2026 (see full year).

Return flights

19 Jan - 02 Feb American Airlines
19 Jan - 23 Jan American Airlines
18 Jan - 29 Jan Spirit Airlines
15 Jan - 29 Jan Spirit Airlines
19 Jan - 30 Jan Spirit Airlines
12 Jan - 21 Jan Spirit Airlines
19 Jan - 02 Feb Avianca direct
26 Jan - 30 Jan Avianca direct
18 Jan - 23 Jan Spirit Airlines
19 Jan - 23 Jan Avianca direct
16 Jan - 23 Jan Frontier Airlines
02 Jan - 09 Jan Spirit Airlines

Also check the deals for one-way flights from Boston to San Salvador in January.

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