Cheapest return flights from Boston to Santiago in March from $329

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

Return flights

08 Mar - 14 Mar Spirit Airlines
03 Mar - 14 Mar Spirit Airlines
05 Mar - 14 Mar Spirit Airlines
05 Mar - 09 Mar Spirit Airlines
30 Mar - 06 Apr Spirit Airlines
12 Mar - 14 Mar Spirit Airlines
15 Mar - 21 Mar Spirit Airlines
28 Mar - 30 Mar Spirit Airlines
08 Mar - 21 Mar Spirit Airlines
16 Mar - 21 Mar Spirit Airlines
03 Mar - 21 Mar Spirit Airlines
16 Mar - 06 Apr Spirit Airlines
28 Mar - 06 Apr Spirit Airlines
19 Mar - 06 Apr Spirit Airlines
30 Mar - 13 Apr Spirit Airlines
26 Mar - 06 Apr Spirit Airlines
28 Mar - 13 Apr Spirit Airlines
26 Mar - 13 Apr Spirit Airlines

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

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