Cheapest return flights from Boston to Santiago in March from $305

AirHint found the following cheapest return flights from Boston (BOS) to Santiago (STI) in March 2026 (see full year).

Return flights

15 Mar - 16 Mar Spirit Airlines
15 Mar - 01 Apr Spirit Airlines
22 Mar - 01 Apr Spirit Airlines
23 Mar - 01 Apr Spirit Airlines
04 Mar - 16 Mar Spirit Airlines
03 Mar - 16 Mar Spirit Airlines
15 Mar - 25 Mar Spirit Airlines
22 Mar - 25 Mar Spirit Airlines
23 Mar - 25 Mar Spirit Airlines
04 Mar - 12 Mar Spirit Airlines
03 Mar - 12 Mar Spirit Airlines
31 Mar - 01 Apr Spirit Airlines
25 Mar - 01 Apr Spirit Airlines
04 Mar - 06 Mar Spirit Airlines
04 Mar - 25 Mar Spirit Airlines
20 Mar - 01 Apr Spirit Airlines
21 Mar - 01 Apr Spirit Airlines
12 Mar - 01 Apr Spirit Airlines
27 Mar - 01 Apr Spirit Airlines
26 Mar - 01 Apr Spirit Airlines

Also check the deals for one-way flights from Boston to Santiago in March.

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