Cheapest return flights from Boston to Santiago in January from $260

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

Return flights

25 Jan - 30 Jan Spirit Airlines
25 Jan - 29 Jan Spirit Airlines
30 Jan - 03 Feb Spirit Airlines
30 Jan - 10 Feb Spirit Airlines
25 Jan - 03 Feb Spirit Airlines
25 Jan - 10 Feb Spirit Airlines
29 Jan - 30 Jan Spirit Airlines
29 Jan - 03 Feb Spirit Airlines
29 Jan - 10 Feb Spirit Airlines
30 Jan - 13 Feb Spirit Airlines
25 Jan - 13 Feb Spirit Airlines
29 Jan - 02 Feb Spirit Airlines
22 Jan - 10 Feb Spirit Airlines
23 Jan - 30 Jan Spirit Airlines
23 Jan - 29 Jan Spirit Airlines
18 Jan - 30 Jan Spirit Airlines
18 Jan - 29 Jan Spirit Airlines
24 Jan - 30 Jan Spirit Airlines
24 Jan - 29 Jan Spirit Airlines
22 Jan - 30 Jan Spirit Airlines

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

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