Cheapest return flights from Boston to Santiago in May from $301

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

Return flights

27 May - 02 Jun Spirit Airlines
19 May - 02 Jun Spirit Airlines
27 May - 03 Jun Spirit Airlines
19 May - 03 Jun Spirit Airlines
20 May - 02 Jun Spirit Airlines
20 May - 03 Jun Spirit Airlines
17 May - 23 May jetBlue direct
30 May - 02 Jun Spirit Airlines
14 May - 18 May Delta
19 May - 23 May Spirit Airlines
30 May - 03 Jun Spirit Airlines
20 May - 23 May Spirit Airlines
17 May - 02 Jun Spirit Airlines
17 May - 19 May Spirit Airlines
27 May - 31 May Spirit Airlines
19 May - 31 May Spirit Airlines
17 May - 03 Jun Spirit Airlines
27 May - 30 May Spirit Airlines
19 May - 30 May Spirit Airlines
20 May - 31 May Spirit Airlines

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

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