Cheapest one-way flights from Boston to Santiago in January from $108

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

One-Way flights

31 Jan Spirit Airlines
29 Jan Spirit Airlines
19 Jan Spirit Airlines
18 Jan Spirit Airlines
23 Jan Spirit Airlines
23 Jan jetBlue direct
17 Jan Spirit Airlines
17 Jan jetBlue direct
14 Jan Spirit Airlines
14 Jan jetBlue direct

Also check the deals for return flights from Boston to Santiago in January.

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The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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