AirHint found the following cheapest return flights from Miami (MIA) to Santiago (SCL) in December 2025 (see full year).

Return flights

04 Dec - 14 Dec	Sky Airline
14 Dec - 09 Jan	Sky Airline
04 Dec - 14 Dec	Delta	direct
23 Dec - 02 Jan	Sky Airline
18 Dec - 04 Jan	Sky Airline
21 Dec - 03 Jan	Arajet
16 Dec - 07 Jan	Sky Airline
14 Dec - 09 Jan	Delta	direct
18 Dec - 28 Dec	Delta
16 Dec - 07 Jan	Delta	direct
17 Dec - 04 Jan	LATAM Airlines Group
23 Dec - 02 Jan	Delta	direct
21 Dec - 03 Jan	LATAM Airlines Group	direct

Also check the deals for one-way flights from Miami to Santiago in December.

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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Cheapest return flights from Miami to Santiago in December from 459€

Return flights