Cheapest return flights from Boston to Santiago in March from 256€

Best time to book flights for Boston (BOS) to Santiago (STI) flights at AirHint

AirHint found the following cheapest return flights from Boston (BOS) to Santiago (STI) in March 2025 (see full year).

Return flights

07 Mar - 09 Mar Frontier Airlines
17 Mar - 27 Mar Frontier Airlines
10 Mar - 27 Mar Frontier Airlines
02 Mar - 09 Mar Frontier Airlines
10 Mar - 28 Mar Frontier Airlines
18 Mar - 19 Mar Delta
20 Mar - 09 Apr Delta
06 Mar - 10 Mar United

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

Skyscanner

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.

Book a cheap hotel in Santiago

Cheap car rent in Santiago